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RRB NTPC Mock Test - 6 (English)


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RRB NTPC Mock Test - 6 (English) for Railways 2022 is part of RRB NTPC Mock Tests Series preparation. The RRB NTPC Mock Test - 6 (English) questions and answers have been prepared according to the Railways exam syllabus.The RRB NTPC Mock Test - 6 (English) MCQs are made for Railways 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for RRB NTPC Mock Test - 6 (English) below.
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RRB NTPC Mock Test - 6 (English) - Question 1

Rearrange the jumbled up letters in their natural sequence and find the odd one out.

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 1

RUMTCPEO → COMPUTER → an electronic device.
OAPPTL → LAPTOP → an electronic device.
NTVIESILOE → TELEVISION → an electronic device.
EKCCAENL → NECKLACE → a piece of jewelry.
Therefore, EKCCAENL is the odd one out.

RRB NTPC Mock Test - 6 (English) - Question 2

Identify the odd one from the list given below.

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 2

Bear → a mammal.
Platypus → a mammal.
Frog → an amphibian.
Dolphin → a mammal.
Therefore, Frog is the odd one out.

Hence, Frog is the right answer

RRB NTPC Mock Test - 6 (English) - Question 3

Which of the following won the Best Picture award at the 91st Academy Awards held in Los Angeles, California?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 3
  • The 91st Academy Awards were presented at the Dolby Theatre, in Los Angeles, California.
  • Best Picture - Green Book.
  • Best Actor in a Leading Role - Rami Malek for Bohemian Rhapsody.
  • Best Actress in a Leading Role - Olivia Colman for The Favourite.
  • Best Directing - Alfonso Cuarón for Roma.
  • Best Supporting Actor - Mahershala Ali for Green Book.
RRB NTPC Mock Test - 6 (English) - Question 4

The Comptroller and Auditor General of India (CAG) receives a salary  ________. 

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 4
  • The CAG receives a salary equal to a judge of the Supreme Court of India. 
  • He is equivalent to a secretary-level IAS Officer to the Government of India, in rank. 
  • The CAG is appointed for a period of 6 years or till he attains the age of 65 years, whichever is earlier. 
  • According to Article 148 of the Constitution of India, he is responsible for the financial audit of the Union as well as State Government Finances. 
RRB NTPC Mock Test - 6 (English) - Question 5

The price of sugar rise by 25%. If a family wants to keep their expenses on sugar the same as earlier, the family will have to decrease its consumption of sugar by 

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 5

% decrease in consumption

RRB NTPC Mock Test - 6 (English) - Question 6

An Assertion (A) and Reason (R) are given below.
Assertion (A): Greenhouse emissions have increased in the last decade.
Reason (R): The average vehicles on roads have increased in the last decade.
Choose the correct option:

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 6

Vehicles emit carbon dioxide which is a greenhouse gas.

Therefore, Reason (R) is true.

Therefore, increase in average cars on road means increase in carbon dioxide.

Therefore, Assertion(A) is true.

Hence, (A) is true and (R) is true and (R) is the correct explanation of (A).

RRB NTPC Mock Test - 6 (English) - Question 7

What is the least common multiple of (6/5) and (8/25)?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 7

The LCM of fractional number = LCM of numerator/HCF of denominator
The LCM of (6/5) and (8/25) = 

RRB NTPC Mock Test - 6 (English) - Question 8

An Assertion (A) and a Reason (R) are given below.
Assertion (A): Tuberculosis is a viral infection.
Reason (R): Bacteria causes diseases.
Choose the correct option.

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 8

Bacteria causes diseases.

Therefore reason is true.

Tuberculosis is caused by bacteria

Therefore, the Assertion is false.

Hence, A is false but R is true.

RRB NTPC Mock Test - 6 (English) - Question 9

Choose the pair which is related in the same way as the words in the first pair from the given choices.
Optimistic : Pessimistic : ---------- : -----------

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 9

Optimistic means someone who looks at everything positively. Pessimistic is someone who looks at something negatively. Therefore, we need to choose antonyms.

Evidence → Manifest, Dodge → Avoid

Not Antonyms

Transparent : Translucent

Clearly not antonyms

Tragic : Comic

Clearly are antonyms

Hence, Tragic : Comic is the correct answer.

RRB NTPC Mock Test - 6 (English) - Question 10

Diameter of a car wheel is 21 cm. A car driver moving at the speed of 66 km/hr takes 36 seconds to reach a destination. How many revolutions will the wheel make during the journey?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 10

Given, speed of the car = 66 km/h and diameter of wheel = 21 cm

So, radius of wheel (r) = 21/2 = 10.5 cm

As we know, Distance = speed × time

Distance covered by car in 36 sec = 66 × 5/18 × 36 = 660 meter

As we know, circumference of circle = 2πr

Thus, Circumference of wheel = 2 × 22/7 × 21/2 = 66 cm

∴ No of revolutions = distance/(circumference of wheel) = (660 × 100)/66 = 1000

RRB NTPC Mock Test - 6 (English) - Question 11

Who among the following led the formation of 'Brahmo Samaj of India' in 1866?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 11
  • Keshab Chandra Sen led the formation of Brahmo Samaj of India in 1866.
  • He embraced the comprehensive and radical scheme of social reform and also the amalgamation of “bhakti” into Brahamoism.
  • He formed the Indian Reform Association (1870) and his efforts led to the enactment of the Native Marriage Act Of 1872 (popularly known as the Civil Marriage Act).
  • The Brahmo Samaj was founded by Raja Ram Mohan Roy.
RRB NTPC Mock Test - 6 (English) - Question 12

Which among the following is known as an Abiotic Component in the Ecological System?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 12
  • The Ecosystem is divided into biotic components and abiotic components. 
  • Biotic components can be divided into producer, consumer and decomposers. 
  • Abiotic Components are the carbonic substance, non-carbonic substance and climatic factors. 
  • Water, light, temperature, air, humidity etc. are the abiotic components of the ecosystem. 
RRB NTPC Mock Test - 6 (English) - Question 13

In the following question, select the one which is different from the other three responses.

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 13


Hence, IJL is odd one from rest.

RRB NTPC Mock Test - 6 (English) - Question 14

In a college, the ratio of boys and girls is 5 : 3 and the ratio of girls and teachers is 7 : 1. What is the ratio of students and teachers?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 14

The ratio of boys and girls is 5 : 3

Number of girls = (3/8) × number of students

The ratio of girls and teachers is 7 : 1

Number of girls/ Number of teachers = 7/1

[(3/8) × Number of students]/Number of teachers = 7/1

Number of students/Number of teachers = 56/3

∴ The ratio of students and teachers 56 ∶ 3

RRB NTPC Mock Test - 6 (English) - Question 15

If % means ÷, _ means +, ! means ×, ^ means –, then what is the value of 1331 % 121 ^ 6 _ 2 ! 13

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 15


We follow the BODMAS rule to solve it.

1331 % 121 ^ 6 _ 2 ! 13 = 1331 ÷ 121 – 6 + 2 × 13 = 11 – 6 + 26 = 31

Therefore, 31 is the correct answer.

RRB NTPC Mock Test - 6 (English) - Question 16

An angle equals five seventh of its supplement. Find the angle and its supplement?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 16

Let the angle be ‘A’

⇒ Supplement of the angle = (180°– A)

Given that the angle is five seventh of its supplement

⇒ A = 5/7 (180°– A)

⇒ 7 × A = 5 × (180°– A)

⇒ 7A = (5 × 180°)– 5A

⇒ 7A + 5A = (5 × 180°)

⇒ 12A = (5 × 180°)

⇒ A = (5 × 180°)/12

⇒ A = 75°

Supplement of A = 180°– 75° = 105°

∴ Angle and its supplement are 75° and 105° respectively

RRB NTPC Mock Test - 6 (English) - Question 17

If ‘+’ means ‘division’, ‘-‘ means ‘multiplication’, ‘×’ means ‘addition’, and ‘÷’ means ‘subtraction’, then 14 + 7 × 5 – 6 ÷ 10 is

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 17


We use BODMAS to calculate the following expression.

14 + 7 × 5 – 6 ÷ 10 = 14 ÷ 7 + 5 × 6 – 10 = 2 + 30 – 10 = 22

Therefore, 22 is the answer.

RRB NTPC Mock Test - 6 (English) - Question 18

The difference between simple and compound interests compounded annually on a certain sum of money for 2 years at 8% per annum is Rs. 40. What is the sum?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 18

We know the formula for compound interest -

Where,

CI = Compound interest

P = Principal

R = Rate of interest

T = Time period

Let the principal be P

CI = P (1 + 8/100) 2 - P = 104P/625

SI = P × 8 × 2/100 = 4P/25

CI - SI = 40

104P/625 - 4P/25 = 40

P = 40 × 625/4 = Rs. 6250

RRB NTPC Mock Test - 6 (English) - Question 19

A tower stands on a ground and above it there is a flag which is ‘h’ meter high. The angle from a point on the ground to bottom and top of flag are α and β respectively. What is the height of the tower?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 19


AB = height of tower
tanα = AB/x

Put value of x from eq.(i) to (ii)

RRB NTPC Mock Test - 6 (English) - Question 20

In which year India-Bhutan Foundation was established?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 20
  • India-Bhutan Foundation was established in August 2003 when then Crown Prince (present King) of Bhutan visited India.
  • It aims to enhance people to people exchanges in focus areas like education, culture and environment protection.
RRB NTPC Mock Test - 6 (English) - Question 21

Two lists are given below. List A contains S.I units, while B contains their value. Match the two correctly.

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 21

RRB NTPC Mock Test - 6 (English) - Question 22

What is the least number which, when divided by 5, 6, 7, 8 gives the reminder 3 but is divisible by 9?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 22

Formula: dividend = divisor × quotient + remainder

Given, the number is divisible by 9.

Thus the number is a multiple of 9.

Let the number be 9a.

Given, number when divided by 5, 6, 7, 8 gives the remainder 3.

Thus, it will give a remainder of 3 when its divided by LCM of 5, 6, 7, 8

LCM of 5, 6, 7, 8 = 840

∴ 9a = 840 × quotient + 3

Here, ‘a’ should be an integer.

For quotient = 1

⇒ 9a = 840 + 3

a = 281/3

Thus, 843 is not the least number

For quotient = 2

⇒ 9a = 840 × 2 + 3

a = 187

Thus the least number is 1683.

RRB NTPC Mock Test - 6 (English) - Question 23

What is the value of (.4)2 + (.04)2 + (.004)2?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 23

⇒ (.4)2 + (.04)2 + (.004)2 = 0.16 + 0.0016 + 0.000016 = 0.161616

Hence, 0.161616 will be the answer.

RRB NTPC Mock Test - 6 (English) - Question 24

In which of the following states is the Bomdi-La Pass located?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 24

Bomdi La Pass: The actual Bomdi La pass (a saddle point) is at a height of 2600m and is about 2-3km away (and higher than) the Bomdila town, Arunachal Pradesh.

RRB NTPC Mock Test - 6 (English) - Question 25

In which state was a new species of ‘crying’ snake discovered on 12 February 2019?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 25
  • A new species of ‘crying’ snake was discovered in Lepa-Rada district of Arunachal Pradesh.
  • The discovery of the non-venomous crying keelback with zoological name Hebius lacrima, has been published in Zootaxa, a New Zealand-based mega-journal for animal taxonomy.
  • Globally there are 3,709 species of snakes.
  • The northeast is home to some 110 species, with Arunachal Pradesh having 55.
RRB NTPC Mock Test - 6 (English) - Question 26

In a class of 55 students there are 34 girls.The average weight of these girls is 51 kg and average weight of the full class is 55.2 kg. What is the average weight of the boys of the class?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 26

Let the average weight of the boys be x kg.

In a class of 55 students there are 34 girls.

So, no. of boys = 55 – 34 = 21

The average weight of these girls is 51 kg and average weight of the full class is 55.2 kgs.

So, we can write now,

(51 × 34) + (21 × x) = 55 × 55.2

⇒ 1734 + 21x = 3036

⇒ 21x = 1302

⇒ x = 62

∴ The average weight of the boys = 62 kg

RRB NTPC Mock Test - 6 (English) - Question 27

A man spends 60% of his income and saves the rest. If his income increases by 20% and spending decreases by 20%, then what is the percentage change in his savings?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 27

Let the initial income of the man be Rs. x.

We know that,

Income (I) = Expenditure (E) + Savings (S)

Initial expenditure = 60% of x = Rs. 0.6x

Initial savings = x – 0.6x = Rs. 0.4x

Income after increment of 20% = x + (20% of x) = Rs. 1.2x

Expenditure after increment = 0.6x – (20% of 0.6x) = Rs. 0.48x

Savings after increment = 1.2x – 0.48x = 0.72x

∴ % change in savings = [(0.72x – 0.4x)/0.4x] × 100 = 80% increase

RRB NTPC Mock Test - 6 (English) - Question 28

Which of the following slogan was given by a moderate leader?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 28
  • Satvameva Jayathe” was the slogan given by moderate leader Madan Mohan Malaviya.
  • Inqlaab Zindanbad” was given by Hasrat Mohani but popularized by Shaheed Bhagat Singh.
  • Simon Go Back” was given by Lala Lajpat Rai.
  • Garibi Hatao” was given by Indira Gandhi.
RRB NTPC Mock Test - 6 (English) - Question 29

Sultan Muhammad Ghori who defeated Prithviraja III in 1192 was a ruler from _____.

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 29
  • The Second Battle of Tarian (Taraori) was fought between Mohammed Ghori and Prithviraj Chauhan. The battle took place in 1192 A.D near Tarain.
  • In this battle, Prithviraj Chauhan was defeated by Mohammed Ghori.
RRB NTPC Mock Test - 6 (English) - Question 30

The Geographical Indication Registry of India has presented a geographical indication tag status to which of the following?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 30
  • The Geographical Indication Registry of India has presented a geographical indication tag status namely-

  Banglar Rosogolla of West Bengal.

Mahabalipuram stone sculpture of Tamil Nadu.

Banaganapalle mango of Andhra Pradesh.

  • Darjeeling tea of West Bengal was the first Geographical Indication tagged product in India, in 2004 and 2005.
RRB NTPC Mock Test - 6 (English) - Question 31

Where did Ministry of Environment, Forest and Climate Change organise the second National Conference on 'Sustainable and Environment-friendly Industrial Production' Project on 15 February 2019?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 31
  • Ministry of Environment, Forest and Climate Change (MoEFCC) organised the second National Conference on 'Sustainable and Environment-friendly Industrial Production' (SEIP) Project in New Delhi on 15 February 2019.
  • The Project is a joint programme of MoEFCC and GIZ.
  • GIZ is a German development agency.
  • The conference was organised under Indo-German Development Cooperation.
RRB NTPC Mock Test - 6 (English) - Question 32

Identify the odd one from the list given below (on the basis of composition).

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 32

Earth: The planet is mainly made of rocks.

Mars: The planet is mainly made of rocks.

Mercury: The planet is mainly made of rocks.

Neptune: It is a gas giant, composed mainly of gases.

Except Neptune, all are mainly made of rocks. Therefore, Neptune is the odd one out.

Hence, Neptune is the correct answer.

RRB NTPC Mock Test - 6 (English) - Question 33

Which city is called as the Pittsburgh of India?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 33
  • Jamshedpur is known as the Steel City of India or Pittsburgh of India for being rich in minerals.
  • It is a home to many industries like Tata Motors, Tata Steels, Usha Martin Industries, Steel & Wire Products, Tata Pigments, Tayo Rolls Limited, and many other assets.
  • This city is also known as the Tatanagar.
RRB NTPC Mock Test - 6 (English) - Question 34

If HOCKEY means HPENID, then find the code for CGYOCZ.

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 34


Therefore, code for CGYOCZ is CHARGE.

RRB NTPC Mock Test - 6 (English) - Question 35

What is the valency of carbon?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 35
  • A carbon atom has four electrons in its outermost valence shell. So, it needs four more electrons to complete. So the valency of carbon is 4.
  • Carbon is 6th in the periodic table that means it has 6 electrons, according to electronic configuration 2 electrons are in K shell and the left 4 are in the L shell.
  • Electrons in the last shell are called valence electrons and the number of these electrons determin the valency of the compound this means the valency of carbon is 4 and carbon’s valency is also called co-valency.
RRB NTPC Mock Test - 6 (English) - Question 36

If 0< θ < 90and cos2θ−  sin2θ = 1/2 then the value of θ

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 36

cos2θ − sin2θ = 1/2

cos⁡2θ = 1/2

⇒ 2θ = 60

⇒ θ = 30

OR

⇒ θ = 30°

RRB NTPC Mock Test - 6 (English) - Question 37

Below are given statements followed by two conclusions I and II. You have to take the given statements to be true even if they seem to be at variance from commonly known facts.

Statements:
Some tables are chairs.
All chairs are bulbs.
Some bulbs are tube lights.

Conclusions:
I. Some tables are tube lights.
II. All bulbs are chairs.

Decide which of the below options logically follows the given conclusions.

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 37

The least possible venn diagram is as follows,

 

I. Some tables are tube lights → False, it is possible but not definite.

II. All bulbs are chairs → False, it is possible but not definite.

Therefore, the answer is option D).

RRB NTPC Mock Test - 6 (English) - Question 38

 

If    then find the value of 

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 38

As we know, (x - 1/x)2 = x2 + 1/x2 - 2

⇒ (x - 1/x)= 6 - 2 = 4

⇒ (x - 1/x) = √4 = 2

Now, we can write,

⇒ x3 - x2 - x + 1 = x(x2 - 1) - 1(x2 - 1) = (x - 1)(x2 - 1)

Hence,

= 2x/(x2 - 1)

= 2/(x - 1/x)

= 2/2 = 1

RRB NTPC Mock Test - 6 (English) - Question 39

Simplify: (13)− (14)+ (17)− 250 = √?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 39

(13)2 - (14)+ (17)2 - 250 = √?

⇒ -27 + 289 - 250 = √?

⇒ -277 + 289 = √?

⇒ √? = 12

∴ ? = 144

RRB NTPC Mock Test - 6 (English) - Question 40

A, B and C invest in a business in the ratio 4 ∶ 5 ∶ 7. C is a sleeping partner, so his share of profits will be half of what it would have been if he were a working partner. If they make Rs 36,000 profit of which 25% is reinvested in the business, how much does B get (in Rs)?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 40

Since C is the sleeping partner and his share of profit will be half of what it would have been if he were a working partner

⇒ Ratio in which the profit will be shared = 4 ∶ 5 ∶ 7/2 = 8 : 10 : 7

Profit = 36000 and when 25% is reinvested then

Profit to be shared between A, B & C = 36000 × 0.75 = Rs. 27000

∴ B’s share = 10/25 × 27000 = Rs. 10800

RRB NTPC Mock Test - 6 (English) - Question 41

Who invented the Band-aid?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 41
  • The Band-Aid was invented in 1920 by Earle Dickson for his wife Josephine, who frequently cut and burned herself while cooking.
  • He was the employee of American pharmaceutical and medical devices giant Johnson & Johnson Company.
RRB NTPC Mock Test - 6 (English) - Question 42

In which state did Prime Minister Narendra Modi inaugurate the Garjee - Belonia Railway Line on 9 February 2019?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 42
  • Prime Minister Narendra Modi visited Guwahati, Itanagar, and Agartala on 9 February 2019.
  • He laid the foundation stone for Greenfield Airport and Sela Tunnel in Arunachal Pradesh and North East Gas Grid in Assam.
  • He inaugurated DD Arun Prabha Channel for Arunachal Pradesh.
  • He also inaugurated the Garjee - Belonia Railway Line in Tripura.
RRB NTPC Mock Test - 6 (English) - Question 43

If ‘>’ means ‘multiplied by’, ‘<’ means ‘divided by’, ‘*’ means ‘added to ’ and # means ‘subtracted from’, then what would be the value of 96 < 32 > 20 # 58 * 8

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 43


Using BODMAS, we get

96 < 32 > 20 # 58 * 8 = 96 / 32 × 20 – 58 + 8 = 3 × 20 – 58 + 8 = 60 – 58 + 8 = 2 + 8 = 10

Therefore, 10 is the correct answer.

RRB NTPC Mock Test - 6 (English) - Question 44

P, Q, R, S, T, U and V are seven houses. P is 4 km west of Q. S is 4 km north of Q. R is 4 km east of Q and T is 4 km south of Q. V is 4 km east of S and U is 4 km east of T.

Q. What is the direction of U with respect to V?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 44

We have drawn figure according to the information given:

Thus, U is in South direction with respect to V.

RRB NTPC Mock Test - 6 (English) - Question 45

Which personality is mentioned in the Buddhist text ‘Milinda Panha’?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 45
  • Nagasena is mentioned in the Buddhist text ‘Milinda Panha’.
  • ‘Milinda Panha’ contains the conversation that took place between Buddhist Monk Nagasena and Indo-Greek ruler Menander I of Bactria.
  • King Menander is also known as King Milinda.
RRB NTPC Mock Test - 6 (English) - Question 46

If in a certain code language, CATASTROPHE is written as 68480417352, how will the word SPECTATOR be written in that code language?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 46

C → 6

A → 8

T → 4

S → 0

R → 1

O → 7

P → 3

H → 5

E → 2

Similarly,

S → 0

P → 3

E → 2

C → 6

T → 4

A → 8

T → 4

O → 7

R → 1

SPECTATOR is written as 032648471.

Hence, the correct answer is 032648471.

RRB NTPC Mock Test - 6 (English) - Question 47

Which economic activity cannot be included in the tertiary sector?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 47
  • In Bee-keeping the bee-keeper collects the honey to sell to other sellers or to produce bees which classifies it as an example of the primary sector where raw materials are produced for the industry.
  • Tertiary sectors are the area of maximum growth as they do not have to produce any raw material for an industry and are known as the service industryExample-teacher, lawyer, etc.
RRB NTPC Mock Test - 6 (English) - Question 48

Who among the following is the current Chief Minister of Chhattisgarh?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 48

Bhupesh Baghel is the incumbent Chief Minister of Chhattisgarh. He is elected from Patan constituency and is a member of the Congress Party. He won the election in 2018 for his Madien tenure as a CM of Chhattisgarh.

RRB NTPC Mock Test - 6 (English) - Question 49

The C. P. of 10 articles is equal to the S. P. of 15 articles. What is the profit or loss percentage?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 49

Let the C. P. of each article be Rs. 1

C. P. of 15 articles = Rs. 15

Their S. P. = Rs. 10

Loss percent = (15-10)/15 × 100

=100/3 = 33. 3%

RRB NTPC Mock Test - 6 (English) - Question 50

If ‘X’ denotes ‘-‘, ‘Y’ denotes ‘×’, ‘Z’ denotes ‘÷’, ‘U’ denotes ‘+’, then what is the value of the expression 49 U 16 Z 8 Y 9 X 2 is:

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 50


Using BODMAS

49 + 16 ÷ 8 × 9 – 2 = 49 + 2 × 9 – 2 = 49 + 18 – 2 = 65

Hence, the correct answer is 65.

RRB NTPC Mock Test - 6 (English) - Question 51

The rate of interest for first 2 years is 4%, for next 3 years is 5% and 8% for period beyond 5 years. If the Interest after 7 years is Rs. 780. Find the principle

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 51

We know that, Simple Interest = (P × R × T)/100

Where, P = principal Amount, R = % Rate of interest, T = time period in years

Let the principle amount be Rs. x

∵ the interest rate is 4% per annum for first 2 years,

Simple Interest for first 2 years = (x × 4 × 2)/100 = 8x/100

∵ the interest rate is 5% per annum for next 3 years,

Simple Interest for next 3 years = (x × 5 × 3)/100 = 15x/100

Now, the time period remaining out of total time = 7 – (3 + 2) = 2 years

∵ the interest rate is 8% per annum for remaining 2 years,

Simple Interest for remaining 2 years = (x × 8 × 2)/100 = 16x/100

According to given information, total interest of 7 years = Rs. 780

∴ 780 = (8x/100) + (15x/100) + (16x/100)

⇒ 780 = 39x/100

⇒ x = (780 × 100)/39

⇒ x = 2000

∴ the principal amount is Rs. 2000.

RRB NTPC Mock Test - 6 (English) - Question 52

Dronacharya Award is related to which of the following?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 52

RRB NTPC Mock Test - 6 (English) - Question 53

Using the end key in Microsoft Word, the processor moves the cursor to the end of the ________.

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 53
  • Using the end key in Microsoft Word, the processor moves the cursor to the end of the line in which the cursor is positioned at that point in time. 
  • MS Word is a word processor developed by Microsoft and it is available for Windows, Mac etc. 
RRB NTPC Mock Test - 6 (English) - Question 54

Where World War II Memorial Museum was inaugrated?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 54

Chief Minister of Arunachal Pradesh, Pema Khandu has inaugurated the World War II Memorial Museum in Jairampur in Changlang District.

RRB NTPC Mock Test - 6 (English) - Question 55

The mean of the marks scored by 12 students of a class is 67.4. If the mean of another class consisting of 15 students is 72.3, find their combined mean?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 55

Mean of the class consisting of 12 students = 67.4

Mean of the class consisting of 15 students = 72.3
Combined mean = 

RRB NTPC Mock Test - 6 (English) - Question 56

Who released a publication titled 'India - Spearheading Climate Solutions' on 12 Feb 2019?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 56
  • Union Environment Minister Harsh Vardhan released a publication titled 'India - Spearheading Climate Solutions' on 12 Feb 2019.
  • This coffee table book highlights actions taken by the country to combat climate change.
  • It was unveiled at the Indira Paryavaran Bhawan.
RRB NTPC Mock Test - 6 (English) - Question 57

If (a + b)2 = 21 + c2, (b + c)2 = 32 + a2 and (c + a)2 = 28 + b2 , find a + b + c = ?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 57

(a + b)2 - c2 = 21

(a + b + c)(a + b - c) = 21       ------(i)

(b + c)2 - a2 = 32

(a + b + c)(b + c - a) = 32      ------(ii)

(c + a)2 - b2 = 28

(c + a + b)(c + a - b)=28           ------(iii)

Adding all three equations-

(a + b + c)[(a + b - c) + (b + c - a) + (c + a - b)] = 81

(a + b + c)2 = 81

a + b + c = 9

RRB NTPC Mock Test - 6 (English) - Question 58

In case of Uniform Circular Motion, the work done by the centripetal force is ________. 

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 58

If the Force F acts on a body and it gets displaced by a distance of S, the work done in that case is, W = FS Cos θ

In case of uniform circular motion, Cos 90= 0 and that is why W = 0 (The force and displacement are perpendicular to each other). 

RRB NTPC Mock Test - 6 (English) - Question 59

What is called the process of converting gas into liquid?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 59
  • Condensation is the process in which a change of the physical state of matter from the gaseous phase to liquid phase takes place.
  • Ex- water vapor in the atmosphere condenses on grass forming dewdrops.
RRB NTPC Mock Test - 6 (English) - Question 60

​A pipe can fill a tank in 10 hours. Due to the leak in its bottom, the tank is filled in 12 hours. If the tank is full, then that leak can empty the tank in howmany hours?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 60

A pipe can fill the tank in = 10 hours

∴ In 1 hour pipe can fill = 1/10

Tank is actually filled in = 12 hours

∴ In 1 hour tank actually fills = 1/12

∴ In 1 hour the leak empties,

∴ The leak can empty the whole tank in = 60 hours

RRB NTPC Mock Test - 6 (English) - Question 61

The total cost of 8 buckets and 5 mugs is Rs. 92 and the total cost of 5 buckets and 8 mugs is Rs. 77. Find the cost of 2 mugs and 3 buckets.

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 61

Let the cost of 1 mug is Rs. X and that of 1 bucket is Rs. Y.

∴ Cost of 8 buckets = Rs. 8Y

And, cost of 5 mugs = Rs. 5X

The total cost of 8 buckets and 5 mugs is Rs. 92.

∴ 8Y + 5X = 92      ----(1)

Similarly, cost of 5 buckets = Rs. 5Y

And, cost of 8 mugs = Rs. 8X

The total cost of 5 buckets and 8 mugs is Rs. 77.

∴ 5Y + 8X = 77       ----(2)

Solving equation (1) & (2), we get

X = Rs. 4 and Y = Rs. 9

Hence, cost of 2 mugs = 2 × 4 = Rs. 8

And, cost of 3 buckets = 3 × 9 = Rs. 27

∴ Total cost of 2 mugs and 3 buckets = Rs. (8 + 27) = Rs. 35

RRB NTPC Mock Test - 6 (English) - Question 62

Which schedule deals with the allocation of seats by the States and Union territories in the Upper House of Parliament?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 62
  • The Fourth schedule deals with the Allocation of Seats by the States and Union territories in the Upper House of Parliament (Rajya Sabha).
  • The Third schedule deals with the Forms of Oaths or Affirmations for Ministers, MPs, Judges of Supreme Court and High Court, CAG, etc.
  • The Fifth schedule deals with the provisions relating to the administration and control of Scheduled Areas and Scheduled Tribes (areas and tribes requiring special protection).
  • The Sixth schedule deals with the provisions made for the administration of tribal areas in northeastern states Assam, Meghalaya, Tripura, and Mizoram.
RRB NTPC Mock Test - 6 (English) - Question 63

Which of the following hydrocarbon is termed as "Fruit ripening gas"?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 63
  • Ethylene is known as the "Fruit ripening gas".
  • The chemical formula of Ethylene (Ethene) is C2H4.
  • It is the simplest alkene (compounds containing carbon-carbon double bond).
  • Methane (CH4), the simplest alkane (compounds containing carbon-carbon single bond), is known as Marsh gas.
  • Propane is an alkane containing 3 carbon atoms (chemical formula - C3H8)
RRB NTPC Mock Test - 6 (English) - Question 64

Who among the following was the first to use the term 'Indus Civilization'?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 64
  • John Marshall was the first scholar who used the term 'Indus Civilization' for the Harappa Civilization. 
  • The time period of this civilization was 2500 BC - 1750 BC. 
  • This civilization was mainly known for its great urban planning and sewage system. 
  • Rakhaldas Bandopadhyay was known for discovering the site of Mohenjodaro whereas Dayaram Sahni was known for his discovery of Harappa. 
  • RS Bist discovered the Indus Valley Civilization site Banawali in 1973. 
RRB NTPC Mock Test - 6 (English) - Question 65

An Assertion (A) and Reason (R) are given below.
Assertion (A): Coal should not be burned in a closed room.
Reason (R): Coal releases carbon monoxide.
Choose the correct option.

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 65

Coal should not be burned in a closed room because there is a huge risk that the people present in that room will die. Therefore, (A) is true.

Coal releases a poisonous gas, carbon monoxide, which is poisonous to humans and people in the closed room can die. Therefore, (R) is true.

Therefore, both (A) and (R) are true and (R) is the correct explanation of (A).

RRB NTPC Mock Test - 6 (English) - Question 66

What is the capital of Nigeria?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 66

Abuja is the capital city of Nigeria. It is located in the centre of Nigeria, within the Federal Capital Territory. Abuja is a planned city, which was built mainly in the 1980s.

RRB NTPC Mock Test - 6 (English) - Question 67

Find the missing value denoted by ‘?’

6 : 215 :: 12 : ?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 67

215 = 63 – 1

Therefore, ? = 123 – 1 = 1728 – 1 = 1727

Hence, the correct answer is 1727.

RRB NTPC Mock Test - 6 (English) - Question 68

Volleyball is related to points as Football is to?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 68

Points are scored in Volleyball. Similarly, Goals are scored in football.

Therefore, Goals is the correct answer.

RRB NTPC Mock Test - 6 (English) - Question 69

Who amongst the following has never served as the Governor of RBI?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 69
  • K R Puri was the Governor of RBI during the period of emergency i.e. 1975 to 1977.
  • Bimal Jalan has held the post from 1997 to 2003.
  • C.D Deshmukh was the first Indian to head RBI.
RRB NTPC Mock Test - 6 (English) - Question 70

Who invented the bifocal glasses?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 70
  • The American scientist Benjamin Franklininvented bifocals .
  • Bifocals are eyeglasses with two distinct optical powers.
  • Bifocals are commonly prescribed to people with presbyopia who also require a correction for myopia, hyperopia, and/or astigmatism.
RRB NTPC Mock Test - 6 (English) - Question 71

Find the standard deviation of {11, 7, 10, 13, 9}

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 71

Standard deviation = 
 

 is the mean of the data

And, N is the number of terms
 = 1 + 9 + 0 + 9 + 1 = 20

 = 1 + 9 + 0 + 9 + 1 = 20
∴ Standard deviation = √(20/5) = √4 = 2

RRB NTPC Mock Test - 6 (English) - Question 72

If Rs 7,800 is to be divided between A, B and C in the ratio 1/2 : 1/3 : 1/4, then how much share will B get (in Rs)?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 72

Let share of B = x/3

Total share = (1/2 + 1/3 + 1/4)x = 13x/12

Share of B out of 7800 = (x/3) / (13x/12) × 7800 = 4/13 × 7800 = 2400

Share of B (in Rs) = Rs. 2400

RRB NTPC Mock Test - 6 (English) - Question 73

Cancer treatment is done by which of the following noble gas? 

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 73

Radon is an element represented with symbol Rn

Its atomic number is 86.

Its atomic mass is 222 units.

 It is a radioactive, colorless, odorless, tasteless noble gas.

Radon was used in cancer treatment as it used to kill cancer cells but should be handled with care as can kill healthy cells.

RRB NTPC Mock Test - 6 (English) - Question 74

Directions: Find the next term in the given series.

D8V, F24S, H12P, J36M, ?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 74

Given Series:

D8V, F24S, H12P, J36M, ?

The logic followed for first letter:

First letters are: D, F, H, J,

The logic followed for the number is:

Digits are: 8, 24, 12, 36,

8 × 3 = 24

24 ÷ 2 = 12

12 × 3 = 36

36 ÷ 2 = 18

The logic followed for second letter:

Second letters are: V, S, P, M,

Hence, the next term will be L18J.

RRB NTPC Mock Test - 6 (English) - Question 75

India's highest lake, Tso Lhamo located in which of the following states of India?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 75

Tso Lhamo lake is one of the highest lakes in the world, located at an altitude of 5,330 m (17,490 ft). 

  • It is situated in North Sikkim, India, about 4 km (2.5 mi) southwest of the international border with China.
  • It is fed by waters from Zemu glacier, Kangtse glacier or Pauhunri glacier, and is the source of the Teesta river.
RRB NTPC Mock Test - 6 (English) - Question 76

Which state has approved 'Khusi' scheme on 22 February 2019 to improve menstrual hygiene among adolescent girl students in the state?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 76
  • Odisha government approved a Rs 466 crore 'Khusi' scheme on 22 February 2019.
  • The aim of the scheme is to improve menstrual hygiene among adolescent girl students in the state.
  • Under the scheme, free sanitary napkins will be provided to 17.25 lakh adolescent girl students of Class-VI to XII studying in government and non-government aided schools of the state.
RRB NTPC Mock Test - 6 (English) - Question 77

Which country will host the 2019 FIFA U-20 World Cup?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 77

Poland pipped India in the race to host 2019 FIFA U-20 World Cup after the members of FIFA Council voted in its favour . With the tournament scheduled to be held around May to June, Poland emerged as the preferred choice as it will be difficult for the players to play in the scorching Indian summer. India had submitted their bid after successfully hosting the U-17 FIFA World Cup last year.

RRB NTPC Mock Test - 6 (English) - Question 78

In which country has the 38th edition of Cobra Gold exercise begun with around 10,000 personnel and 29 countries as participants?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 78
  • One of the Asia-Pacific region's largest multinational military exercises, Cobra Gold began in Thailand with around 10,000 personnel and 29 countries as participants.
  • It is aimed at enhancing interoperability, strengthening relationships among participating nations.
  • This year's exercise is the 38th of its kind.
RRB NTPC Mock Test - 6 (English) - Question 79

________  became the 24th district of Arunachal Pradesh on 10th December 2018.

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 79
  • Lepa Rada became the 24th district of Arunachal Pradesh on 10th December 2018.
  • Shi Yomi was the 23rd district of Arunachal Pradesh on 9 December 2018
  • Lepa Rada is carved out of the Lower Siang district, comprising four administrative circles.
  • The state assembly had on 29th August 2018 passed a bill for creation of three new districts - Pakke-Kesang, Lepa Rada and Shi Yomi.
RRB NTPC Mock Test - 6 (English) - Question 80

Two trains which are 180 m and 170 m in length are running towards each other on the parallel lines at a speed of 72 km/hr and 54 km/hr respectively. To cross each other after they meet, each will take:

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 80

Since the trains are travelling towards each other, we have

Relative speed = 72 + 54 = 126 kmph

Converting it into m/s, we have

126 kmph = 126 × 5/18 = 35 m/s

Time taken to cross each other = (180 + 170)/35 = 10 sec

RRB NTPC Mock Test - 6 (English) - Question 81

If Z = 1, CAT = 57, BEAR = 82, then what is the value of PENCIL?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 81


The logic followed is:

Z = 1 → 27 – position of Z in alphabetical order.

Similarly,

C = 24, A = 26 and T = 7.

CAT → 24 + 26 + 7 = 57.

Therefore, PENCIL → (27 – 16) + (27 – 5) + (27 – 14) + (27 – 3) + (27 – 9) + (27 – 12) = 11 + 22 + 13 + 24 + 18 + 15 = 103.

RRB NTPC Mock Test - 6 (English) - Question 82

Cost price of an article is Rs. 5500. It was sold at a profit of 9.09%. If the article was sold at a discount of 20%, then what is the marked price (in Rs.) of the article?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 82

Cost price of article = Rs. 5500

Profit = 9.09%

Profit% = (SP - CP)/CP × 100

9.09 = (SP - 5500)/5500 × 100 ⇒ SP = Rs. 6000

Discount % = (MP - SP)/MP × 100

Let the marked price be Rs. X and discount is 20%

20 = (X - 6000)/X × 100

(X - 6000) = X/5

⇒ X = Rs. 7500

Marked price = Rs. 7500

RRB NTPC Mock Test - 6 (English) - Question 83

The sum of the ages of a father and son is 38 years. Four years ago, the product of their ages was 3 times the father’s age at that time. The present ages of the father and son, respectively are

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 83

Let’s assume that present age of father is X and age of son is Y

∴ Sum of their present ages = X + Y = 38

Four years ago, the age of father was = X – 4

Four years ago, the age of son was = Y – 4  

∵ Four years ago, the product of their ages was 3 times the father’s age at that time.

∴ (X – 4) × (Y – 4) = 3 (X – 4)

⇒ Y – 4 = 3

⇒ Y = 7

∴ Present age of son is = 7 years

& present age of father is = 38 – 7 = 31 years

RRB NTPC Mock Test - 6 (English) - Question 84

The harmful ultraviolet rays which comes from the Sun causes__________.

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 84

The harmful ultraviolet rays which come from the Sun causes skin cancer.

  • The harmful ultraviolet rays may age skin cells and can damage its DNA.
  • If enough DNA damage builds up over time in the skin, it can cause cells to start growing rapidly which may result as skin cancer.
RRB NTPC Mock Test - 6 (English) - Question 85

Solve: 

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 85

RRB NTPC Mock Test - 6 (English) - Question 86

Rearrange the jumbled up letters in their natural sequence and find the odd one out.

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 86

NRADSIE → SARDINE → a type of fish.

GHBUELITT → TUBELIGHT → a device that is used to generate light.

AGTNEERRO → GENERATOR → a device used to generate electricity.

ORREGUTLA → REGULATOR → a device used to control the flow of electricity.

Clearly, NRADSIE is not related to electricity and is the odd one out.

RRB NTPC Mock Test - 6 (English) - Question 87

Select the pair in which the numbers are similarly related as in a given pair.
11 : 1330 :: ----- : -----

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 87

The pattern is in the form of x : x- 1.

Now,

99 ≠ 103 - 1

65 ≠ 83 - 1

7 = 23 - 1

729 ≠ 813 - 1

Hence, 2 : 7 is the correct answer.

RRB NTPC Mock Test - 6 (English) - Question 88

Which of the following does the electrical resistance not depend on?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 88
  • Resistance is the obstruction experienced by the flow of electrons through a conductor. It is the ratio of applied potential difference (V) to the current (I) flowing through the conductor but is independent of the values of I and V.
  • Resistance depends on the nature of the conductor. The more the impurities, the more will be the resistance and the poorer is the conductor.
  • Resistance is also affected by physical conditions. Example: with the increase in temperature, the resistance increases in case of conductors.
  • Also, resistance is affected by the dimensions of the conductor. It is directly proportional to the length of the conductor and inversely proportional to its area of cross-section (R= r l/A)
RRB NTPC Mock Test - 6 (English) - Question 89

The Supreme Court can issue writs under which Article(s) of the Constitution?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 89

The Supreme Court can issue writs under Articles 32 and 139 of the Constitution.

The types of writs include Habeas Corpus, Mandamus, Prohibition, Certiorari and Quo warranto.

NOTE: Article 226 gives power to high courts to issue writs, not to the Supreme court

RRB NTPC Mock Test - 6 (English) - Question 90

Direction: Read the information given below and answer the question that follows.
Apple, Banana, Cherry, Strawberry, Blueberry, Grapes, Guava and Berries are placed around a circular table.
Strawberry is placed exactly between Grapes and Guava.Apple is placed four places away from Grapes. Strawberry is placed opposite to berries. Guava is placed second to the right of Grapes.Banana is not placed adjacent to Grapes and Apple and Strawberry. Cherry is placed three places away from Apple.

Q. Which of the following statement is correct?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 90

Fruits name: Apple, Banana, Cherry, Strawberry, Blueberry, Grapes, Guava and Berries

1. Strawberry is placed exactly between Grapes and Guava.

2. Guava is placed second to the right of Grapes.

3. Apple is placed four places away from Grapes.

4. Strawberry is placed opposite to berries.

5. Banana is not placed adjacent to Grapes and Apple and Banana.

6. Cherry is placed three places away from Apple.

Thus, “Banana is placed exactly between Grapes and Apple” is the correct answer.

RRB NTPC Mock Test - 6 (English) - Question 91

Direction: Read the information given below and answer the question that follows.
Apple, Banana, Cherry, Strawberry, Blueberry, Grapes, Guava and Berries are placed around a circular table.
Strawberry is placed exactly between Grapes and Guava.Apple is placed four places away from Grapes. Strawberry is placed opposite to berries. Guava is placed second to the right of Grapes.Banana is not placed adjacent to Grapes and Apple and Strawberry. Cherry is placed three places away from Apple.

Q. Which fruit is placed third to the right of Cherry?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 91

Fruits name: Apple, Banana, Cherry, Strawberry, Blueberry, Grapes, Guava and Berries

1. Strawberry is placed exactly between Grapes and Guava.

2. Guava is placed second to the right of Grapes.

3. Apple is placed four places away from Grapes.

4. Strawberry is placed opposite to berries.

5. Banana is not placed adjacent to Grapes and Apple and Banana.

6. Cherry is placed three places away from Apple.

Hence, Guava is placed third to the right of cherry.

RRB NTPC Mock Test - 6 (English) - Question 92

Study the following information carefully and answer the questions based on it.
A research was conducted by an organisation to study which cooling devices households use during summers in their homes. Total 300 households were studied to find out which ones use A/Cs, Coolers and Fans. Results showed that 59 used all three, 80 use coolers and A/Cs, 72 use A/Cs and fans, 152 use fans and coolers, 30 use only A/Cs, 74 use only coolers and 10 use only fans.

Q. How many households use only 2 products?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 92

Research was conducted in 300 households about three products A/CS, Coolers and Fans.

Households that use all three products = 59

Households that use coolers and A/Cs = 80

Households that use A/Cs and fans = 72

Households that use fans and coolers = 152

Households that use only A/Cs = 30

Households that use only coolers = 74

Households that use only fans = 10

Therefore,

Households that use both A/Cs and coolers but not fans = Households that use A/Cs and coolers – Households that use all three = 80 – 59 = 21

Households that use both A/Cs and fans but not coolers = Households that use A/Cs and fans – Households that use all three = 72 – 59 = 13

Households that use both coolers and fans but not A/Cs = Households that use coolers and fans – Households that use all three = 152 – 59 = 93

Therefore, households that use only 2 products = 21 + 13 + 93 = 127.

Hence, the answer is option A.

RRB NTPC Mock Test - 6 (English) - Question 93

Study the following information carefully and answer the questions based on it.
A research was conducted by an organisation to study which cooling devices households use during summers in their homes. Total 300 households were studied to find out which ones use A/Cs, Coolers and Fans. Results showed that 59 used all three, 80 use coolers and A/Cs, 72 use A/Cs and fans, 152 use fans and coolers, 30 use only A/Cs, 74 use only coolers and 10 use only fans.

Q. What is the percentage of households that use only 1 product?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 93

Research was conducted in 300 households about three products A/CS, Coolers and Fans.

Households that use all three products = 59

Households that use coolers and A/Cs = 80

Households that use A/Cs and fans = 72

Households that use fans and coolers = 152

Households that use only A/Cs = 30

Households that use only coolers = 74

Households that use only fans = 10

Therefore,

Households that use both A/Cs and coolers but not fans = Households that use A/Cs and coolers – Households that use all three = 80 – 59 = 21

Households that use both A/Cs and fans but not coolers = Households that use A/Cs and fans – Households that use all three = 72 – 59 = 13

Households that use both coolers and fans but not A/Cs = Households that use coolers and fans – Households that use all three = 152 – 59 = 93

Therefore, the people who use only 1 product = 30 + 10 + 74 = 114 which is 38% of the total products
Hence, the answer is option B).

RRB NTPC Mock Test - 6 (English) - Question 94

Study the following information carefully and answer the questions based on it.
A research was conducted by an organisation to study which cooling devices households use during summers in their homes. Total 300 households were studied to find out which ones use A/Cs, Coolers and Fans. Results showed that 59 used all three, 80 use coolers and A/Cs, 72 use A/Cs and fans, 152 use fans and coolers, 30 use only A/Cs, 74 use only coolers and 10 use only fans.

Q. How many households don’t use fans?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 94

Research was conducted in 300 households about three products A/CS, Coolers and Fans.

Households that use all three products = 59

Households that use coolers and A/Cs = 80

Households that use A/Cs and fans = 72

Households that use fans and coolers = 152

Households that use only A/Cs = 30

Households that use only coolers = 74

Households that use only fans = 10

Therefore,

Households that use both A/Cs and coolers but not fans = Households that use A/Cs and coolers – Households that use all three = 80 – 59 = 21

Households that use both A/Cs and fans but not coolers = Households that use A/Cs and fans – Households that use all three = 72 – 59 = 13

Households that use both coolers and fans but not A/Cs = Households that use coolers and fans – Households that use all three = 152 – 59 = 93

Households that don’t use fans = 30 + 21 + 74 = 125

Therefore, the answer is option D).

RRB NTPC Mock Test - 6 (English) - Question 95

Study the following information carefully and answer the questions given below it.
(i) There are seven members in a family in which there are 2 married couples.
(ii) Rohit is the son of a businessman and housewife, and have 2 daughters Gina and Dina.
(iii) Tina’s both daughters are students.
(iv) Mohit is the father-in-law of Tina.
(v) Mina has two sons.
(vi) Dina’s uncle Ram is an accountant.
(vii) There is a manager and female Lawyer in the family.

Q. Who is the manager in the family?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 95


1) Rohit is the son of a businessman and housewife, and has 2 daughters Gina and Dina.

2) Tina’s both daughters are students. (this means that Tina is the wife of Rohit )

3) Mohit is the father-in-law of Tina. (this means that Mohit is the father of Rohit)

(v) Mina has two sons. (This means that Mina is Rohit’s mother)

(vi) Dina’s uncle Ram is an accountant. (This means that Ram is Rohit’s brother)

(vii) There is a manager and female Lawyer in the family. (This means that Rohit is manager and Tina is lawyer.


Therefore, Rohit is the manager in the family.

Hence, Rohit is the correct answer.

RRB NTPC Mock Test - 6 (English) - Question 96

Study the following information carefully and answer the questions given below it.
(i) There are seven members in a family in which there are 2 married couples.
(ii) Rohit is the son of a businessman and housewife, and have 2 daughters Gina and Dina.
(iii) Tina’s both daughters are students.
(iv) Mohit is the father-in-law of Tina.
(v) Mina has two sons.
(vi) Dina’s uncle Ram is an accountant.
(vii) There is a manager and female Lawyer in the family.

Q. Who is Ram?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 96


1) Rohit is the son of a businessman and housewife, and has 2 daughters Gina and Dina.

2) Tina’s both daughters are students. (this means that Tina is the wife of Rohit )

3) Mohit is the father-in-law of Tina. (this means that Mohit is the father of Rohit)

(v) Mina has two sons. (This means that Mina is Rohit’s mother)

(vi) Dina’s uncle Ram is an accountant. (This means that Ram is Rohit’s brother)

(vii) There is a manager and female Lawyer in the family. (This means that Rohit is manager and Tina is lawyer.


Therefore, Ram is Tina’s brother-in-law.

RRB NTPC Mock Test - 6 (English) - Question 97

Study the following information carefully and answer the questions given below it.
(i) There are seven members in a family in which there are 2 married couples.
(ii) Rohit is the son of a businessman and housewife, and have 2 daughters Gina and Dina.
(iii) Tina’s both daughters are students.
(iv) Mohit is the father-in-law of Tina.
(v) Mina has two sons.
(vi) Dina’s uncle Ram is an accountant.
(vii) There is a manager and female Lawyer in the family.

Q. What is the profession of Tina?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 97


1) Rohit is the son of a businessman and housewife, and has 2 daughters Gina and Dina.

2) Tina’s both daughters are students. (this means that Tina is the wife of Rohit )

3) Mohit is the father-in-law of Tina. (this means that Mohit is the father of Rohit)

(v) Mina has two sons. (This means that Mina is Rohit’s mother)

(vi) Dina’s uncle Ram is an accountant. (This means that Ram is Rohit’s brother)

(vii) There is a manager and female Lawyer in the family. (This means that Rohit is manager and Tina is lawyer.


Therefore, Tina is the lawyer in the family.

RRB NTPC Mock Test - 6 (English) - Question 98

Directions: The table given below shows the selling price (in Rs./kg) of 4 different items at 5 different shops.

Q. If one kg of each item is purchased from each shop, then which shop will have the least total selling price?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 98

Selling price of all items from shop 1 = 10 + 21 + 18 + 20 = Rs. 69

Selling price of all items from shop 2 = 12 + 20 + 12 + 20 = Rs. 64

Selling price of all items from shop 3 = 14 + 22 + 14 + 19 = Rs. 69

Selling price of all items from shop 4 = 11 + 21 + 15 + 19 = Rs. 66

Selling price of all items from shop 5 = 13 + 21 + 17 + 20 = Rs. 71

The least selling price is from shop 2

RRB NTPC Mock Test - 6 (English) - Question 99

Directions: The table given below shows the selling price (in Rs./kg) of 4 different items at 5 different shops.

Q. What is the average selling price (in Rs/kg) of item C?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 99

Average selling price = Sum of price of item from all shops/ Total number of shops

Total number of shops = 5

Average selling price of item C = (18 + 12 + 14 + 15 + 17)/5 = Rs. 15.20

RRB NTPC Mock Test - 6 (English) - Question 100

Directions: The table given below shows the selling price (in Rs./kg) of 4 different items at 5 different shops.

Q. If a customer purchases 3 kg quantity of item A from each Shop, then what is the total selling price (in Rs.)?

Detailed Solution for RRB NTPC Mock Test - 6 (English) - Question 100

Selling price of 3kg of item A from shop 1 = 10 × 3 = Rs. 30

Selling price of 3kg of item A from shop 3 = 12 × 3 = Rs. 36

Selling price of 3kg of item A from shop 3 = 14 × 3 = Rs. 42

Selling price of 3kg of item A from shop 4 = 11 × 3 = Rs. 33

Selling price of 3kg of item A from shop 5 = 13 × 3 = Rs. 39

Total selling price = 30 + 36 + 42 + 33 + 39 = Rs. 180

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