RRB NTPC Mock Test - 8 (English) - RRB NTPC/ASM/CA/TA MCQ

# RRB NTPC Mock Test - 8 (English) - RRB NTPC/ASM/CA/TA MCQ

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## 100 Questions MCQ Test RRB NTPC Mock Test Series 2025 - RRB NTPC Mock Test - 8 (English)

RRB NTPC Mock Test - 8 (English) for RRB NTPC/ASM/CA/TA 2024 is part of RRB NTPC Mock Test Series 2025 preparation. The RRB NTPC Mock Test - 8 (English) questions and answers have been prepared according to the RRB NTPC/ASM/CA/TA exam syllabus.The RRB NTPC Mock Test - 8 (English) MCQs are made for RRB NTPC/ASM/CA/TA 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for RRB NTPC Mock Test - 8 (English) below.
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RRB NTPC Mock Test - 8 (English) - Question 1

### In the given question, in three out four figures, figure (i) is related to figure (ii) in same particular manner. Spell out the pair in which relationship does not exist between figure (i) and figure (ii).

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 1

In each pair of figure in option 1, 2 and 4, both the figures are same except that the shape in figure (i) is increased by one in figure (ii), i.e. in option 1, figure (i) has one big circle while figure (ii) has two big circles. There is no other change.

However, in option figure (3), figure (i) is rotated 90 degree clockwise alongwith the addition of the shape to form figure (ii).

Hence option figure (3) is the odd one.

RRB NTPC Mock Test - 8 (English) - Question 2

### Read the following passage and find out the inferences stated through the passage. With growing industrialisation, it is difficult to reduce air pollution. The world is facing serious problems due to air pollution. While the first world countries have fully developed and have contributed the most to air pollution, the third world countries have yet to develop. It would be unfair to put equal restraints on the third world and the first world countries in order to stop pollution. Q. Which of the following statements can be inferred from the above passage?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 2

The correct answer is option 1. There should be different restraints on the first world and the third world countries to reduce air pollution.

From the passage, we can conclude that the world is facing serious problems due to air pollution, so we need to control it but same restraints cannot be placed on the first world and the third world countries as it would be unfair to the third world countries. It can be said that there is a need to put different restraints on the third world and the first world countries so as to be fair and to reduce the pollution.Hence, option 1 is the correct solution.

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RRB NTPC Mock Test - 8 (English) - Question 3

### In the following figure, rectangle represents Chefs, circle represents Choreographers, triangle represents Divers and square represents Americans. Which set of letters represents Americans who are either Choreographers or Divers?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 3

Here the alphabets in rectangle represents Chefs: A and B

Circle represents Choreographers: D, G, E and F

Triangle represents Divers: E, G, H, and I

Square represents Americans: C, E, H, D and B

Set of letters represents Americans who are either Choreographers or Divers are letters in Square and common with Triangle or Circle, which is DEH.

Hence, ‘DEH’ is the correct answer.

RRB NTPC Mock Test - 8 (English) - Question 4

Tuberculosis Bacteria was discovered by ________.

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 4
• Tuberculosis Bacteria was discovered by Robert Koch.
• It is a potentially serious infectious bacterial disease that mainly affects the lungs.
• It is among the top 3 causes of death for women aged 15 to 44.
• It can spread through the air from person to person
RRB NTPC Mock Test - 8 (English) - Question 5

Meenakshi Amman Temple is located in which of the following Indian State?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 5
• Meenakshi Amman Temple is located in Tamil Nadu.
• It is also known as Meenakshi-Sundareshwara Temple.
• It was built by ViswanathaNayak during the Nayak rule and is located in the heart of the city of Madurai.
RRB NTPC Mock Test - 8 (English) - Question 6

Who among the following was the first Secretary General of the United Nations?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 6
• Trygve Lie was the first Secretary General of the United Nations.
• He served for the period of 6 years i.e, 1946 to 1952.
• Antonio Guterres is the current Secretary‑General of the United Nations.
• The headquarters of the UN is in Manhattan, New York City.
RRB NTPC Mock Test - 8 (English) - Question 7

Oberon is the moon of which of the following planet?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 7
• Oberon is the moon of Uranus.
• It is discovered by William Herschel in 1787.
• The mean distance of Oberon from the center of Uranus is about 582,600 km.
• Oberon is the second largest and most massive of the Uranian moons.
RRB NTPC Mock Test - 8 (English) - Question 8

The Battle of Ghaghra was fought in which of the following year?

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

The Battle of Ghaghra was fought in the year 1529 between Babur and Mohammad Lodi (Afghans).

The famous battles fought in the above mentioned years are as follows:

RRB NTPC Mock Test - 8 (English) - Question 9

What is the full form of LSI used in computer technology?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 9
• LSI is used in computer technology stands for Large Scale Integration.
• It is the process of integrating or embedding thousands of transistors on a single silicon semiconductor microchip.
• This technology was conceived in the mid-1970s.
• This technology is no longer in use, It is succeeded by very large-scale integration (VLSI) and ultra large-scale integration (ULSI) technologies.
RRB NTPC Mock Test - 8 (English) - Question 10

In the following question meanings of symbols are given. Read them carefully and answer the question.
A\$B means A is the mother of B
A%B means A is the sister of B
A+B means A is the brother of B
A@B means A is the father of B

Q. What is the relation between ‘J’ and ‘A’ in the expression ‘A@F\$M%J+T’?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 10

Clearly, A is the grandfather of J.

RRB NTPC Mock Test - 8 (English) - Question 11

In a certain language ‘pink’ is written as ‘yellow’, ‘yellow’ is written as ‘white’, ‘white’ is written as ‘black’ and ‘black’ is written as ‘orange’, then what is the colour of ripe mango?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 11

Colour of a ripe mango is ‘yellow’ which is written as ‘white’.

Thus, the colour of the mango is white.

RRB NTPC Mock Test - 8 (English) - Question 12

What is the SI unit of Surface Tension?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 12
• The SI unit of Surface Tension is Newton/meter (N/m).
• The tendency of fluid surfaces to shrink into the minimum surface area possible is known as Surface tension.
• Agnes Pockels discovered the influence of impurities on the surface tension.
RRB NTPC Mock Test - 8 (English) - Question 13

There are two examination rooms A and B. If 15 candidates are sent from A to B, the number of students in each room is the same. If 25 candidates are sent from B to A, the number of students in A is double of that in B. Find the number of students in each room.

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 13

Let the number of students in rooms A and B be x and y respectively.

⇒ x - 15 = y + 15

⇒ x - y = 30             - - - - - equation 1

Also from the given data

⇒ x + 25 = 2 (y - 25)

⇒ x + 25 = 2y - 50

⇒ x - 2y = -75                    - - - - - - - equation 2

From equation 1 and equation 2, we get

⇒ Equation 1 - Equation 2, we get y = 105

Substitute y = 105 in equation 1, we get

⇒ x = 135

∴ Number of students in rooms A and B are 135 and 105

RRB NTPC Mock Test - 8 (English) - Question 14

If 2A = 3B and 3A = 5C, then find A : B : C

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 14

Given

2A = 3B

⇒ A : B = 3 : 2 = 15 : 10

And, 3A = 5C

⇒ A : C = 5 : 3 = 15 : 9

Hence, A : B : C = 15 : 10 : 9

RRB NTPC Mock Test - 8 (English) - Question 15

The Battle of Haldighati was fought between Akbar and ________.

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 15
• The Battle of Haldighati was fought between Akbar and Maharana Pratap.
• It was named Haldighati because the sand colour of the area is yellow like haldi.
• The battle fought on 18 June 1576.
• Haldighati is situated in Rajasthan, India.
RRB NTPC Mock Test - 8 (English) - Question 16

How many maximum Tuesdays can be there in a year?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 16

As there are 52 weeks and 1 day in a non-leap year and 52 weeks and 2 days in a leap year.

Thus, there can be definitely maximum 53 Tuesdays in a year.

RRB NTPC Mock Test - 8 (English) - Question 17

What is the atomic number of Mercury?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 17
• Mercury is a chemical element with symbol Hg and atomic number 80.
• It is also known as quicksilver.
• It is the only metal that is a liquid at standard temperature and pressure.
• It is commonly used in fluorescent lights, felt production, thermometers, and barometers.
RRB NTPC Mock Test - 8 (English) - Question 18

is equal to -

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 18

= cos4θ + sin4θ + sin2θcos2θ

= 1 − 2sin2θcos2θ + sin2θcos2θ

= 1 − sin2θcos2θ

RRB NTPC Mock Test - 8 (English) - Question 19

If ‘+’ denotes ‘-’, ‘÷’ denotes ‘+’, ‘×’ denotes ‘÷ ‘,’- ‘denotes ‘× ‘, then find the value of
363 × 3 ÷ 4 - 15 ÷ 20 + 1?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 19

Changing operators as given format.

Given expression: 363 × 3 ÷ 4 - 15 ÷ 20 + 1

After interchanging symbols: 363 ÷ 3 + 4 × 15 + 20 - 1 = 121 + 60 + 20 - 1 = 200

Hence, the correct answer is 200.

RRB NTPC Mock Test - 8 (English) - Question 20

A piece of paper is folded and cut as shown below in the question figures. From the given answer figures, indicate how it will appear when opened?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 20

Hence, the unfolded figure will be similar to option 2.

RRB NTPC Mock Test - 8 (English) - Question 21

Florida Strait separates the USA with which of the following countries?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 21
• Florida Strait separates the USA with Cuba.
• It is a strait located in south-southeast of the North American mainland.
• The strait carries the Florida Current, the beginning of the Gulf Stream, from the Gulf of Mexico.
RRB NTPC Mock Test - 8 (English) - Question 22

Two pipes A and B can fill an empty cistern in 8 hours and 10 hours respectively. If both the pipes are simultaneously opened in an empty cistern, what part of the cistern is filled after 4 hours?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 22

Part filled by pipe A in 1 hr. = 1/8

Part filled by pipe B in 1 hr. = 1/10

Part filled by pipes A & B in 1 hr. = 1/8 + 1/10 = 9/40

Part filled by pipes A & B in 2 hrs. = 4 × 9/40 = 9/10

∴ After 4 hours, 9/10 part of the cistern is filled

RRB NTPC Mock Test - 8 (English) - Question 23

If the angle of elevation of the sun changes from 30° to 45°, the length of the shadow of the pole decrease by 20 meters, then the length (in metres) of the pole is:

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 23

IN ΔABC

RRB NTPC Mock Test - 8 (English) - Question 24

What approximate value should come in place of the question mark (?) in the following question?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 24

RRB NTPC Mock Test - 8 (English) - Question 25

Which of the following is the main constituent of Biogas after Methane?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 25
• Methane and Carbon dioxide are the main constituent of Biogas.
• Methane is produced by the anaerobic bacterial decomposition of vegetable matter under water.
• It is also known as marsh gas or swamp gas.
• Its chemical formula is CH4.
RRB NTPC Mock Test - 8 (English) - Question 26

A batsman makes a score of 111 runs in the 10th match and thus increases his average runs per match by 5. What will be his average after the 10th match?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 26

Let average runs be x.

Total runs in 9 matches = 9x

Average runs after 10th match = (9x + 111)/10 = x + 5 (given)

⇒ 9x + 111 = 10x + 50

⇒ x = 61

∴ Average after 10th match = 61 + 5 = 66

RRB NTPC Mock Test - 8 (English) - Question 27

The Simla Conference was held in the year _______?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 27
• The Simla Conference was held in 1945.
• It was a meeting between the Viceroy Lord Wavell and the major political leaders of British India at Shimla, India.
• It was conducted to discuss the provisions of the Wavell Plan
• The conference began in Simla on June 24, 1945, and lasted till July 14, 1945.
• Simla Conference proved out as a failure.
RRB NTPC Mock Test - 8 (English) - Question 28

A train travelling with a speed of 65 kmph passes a man travelling with a speed of 7 kmph in an opposite direction in 13s. What is the length of the train?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 28

Speed of the train = 65 kmph

Speed of the man = 7 kmph

Since, they travel in the opposite direction

Relative speed = Speed of train + Speed of man = 65 + 7 = 72 kmph

Relative speed =  = 20 m/s

Time taken by train to pass the man = 13 s

Length of the train = Relative speed × Time taken by train to pass the man = 20 × 13 = 260 m

RRB NTPC Mock Test - 8 (English) - Question 29

The famous Sanchi Stupa is associated with which of the following religions?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 29
• The famous Sanchi Stupa is associated with Buddhism.
• It is developed in Buddhist architecture.
• It is made out of locally quarried sandstone.
• Its construction got started in 3rd century BCE.
• The height of the Sanchi Stupa is about 54.0 ft.
RRB NTPC Mock Test - 8 (English) - Question 30

11.11% of Aditi’s age is equal to 66.67% of Farah’s age, while 60% of Farah’s age is equal to 20% of Sana’s age. What is the ratio of the ages of Aditi and Sana?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 30

Given, 11.11% of Aditi’s age = 66.67% of Farah’s age

⇒ 1/9 × Aditi’s age = 2/3 × Farah’s age

⇒ Aditi’s age = 9 × 2/3 × Farah’s age

⇒ Aditi’s age = 6 × Farah’s age       ----(1)

Also, 60% of Farah’s age = 20% of Sana’s age

⇒ 3/5 × Farah’s age = 1/5 × Sana’s age

⇒ Sana’s age = 5 × 3/5 × Farah’s age

⇒ Sana’s age = 3 × Farah’s age      ----(2)

Dividing (1) by (2), we get,

⇒ Aditi’s age/Sana’s age = 6/3 = 2

∴ Ages of Aditi and Sana is in the ratio 2 ∶ 1

RRB NTPC Mock Test - 8 (English) - Question 31

What approximate value should come in place of the question mark (?) in the following question?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 31

⇒ 7 x 211
⇒ 14336 = ?

RRB NTPC Mock Test - 8 (English) - Question 32

Marked price of an article is Rs. 7500. It is purchased at a discount of 12%. If Rs. 250 are spent on its repairs, then to gain 20% profit what should be the selling price (in Rs.)?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 32

Marked price = M.P = Rs. 7500

After discount of 12%

Purchase price = (1 - 0.12) × 7500 = Rs. 6600

After spending Rs. 250 on repair

Cost price = C.P = Rs. (6600 + 250) = Rs. 6850

To gain a profit of 20%

∴ Selling price = (1 + 0.20) × C.P = 1.2 × 6850 = Rs. 8220

Shortcut method:

Selling price = (1 + profit percent/100) × {(1 - discount percent/100) × marked price + repair cost}

∴ Selling price = 1.2 × {(1 - 0.12) × 7500 + 250} = Rs. 8220

RRB NTPC Mock Test - 8 (English) - Question 33

In the following question, select the related word from the given alternatives.
Song : Singer : : Painting : ?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 33

As song is sung by Singer,

Similarly,

Hence, painting : painter is the correct answer.

RRB NTPC Mock Test - 8 (English) - Question 34

Which of the following country is not a member of the Association of Southeast Asian Nations (ASEAN)?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 34
• North Korea is not a member of the Association of Southeast Asian Nations (ASEAN).
• There are currently 10 member states: Indonesia, Malaysia, Philippines, Singapore, Thailand, Brunei, Laos, Myanmar, Cambodia, and Vietnam.
• ASEAN was founded in 1967 by the five Southeast Asian nations of Indonesia, Malaysia, Philippines, Singapore, and Thailand.
• The Secretary-General of ASEAN 2018 - 2022 is H.E. Dato Lim Jock Hoi. He is from Brunei Darussalam.
RRB NTPC Mock Test - 8 (English) - Question 35

In a certain code language, '-' represents '×', '÷' represents '+', '+' represents '÷' and '×' represents '-'. Find out the answer to the following question.
16 × 20 ÷ 15 - 4 + 2 = ?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 35

The given equation is: 16 × 20 ÷ 15 - 4 + 2 = ?

Here '-' represents '×', '÷' represents '+', '+' represents '÷' and '×' represents '-'. So let’s replace the sign in the above equation.

16 × 20 ÷ 15 - 4 + 2 → 16 - 20 + 15 × 4 ÷ 2 = 16 + 10 = 26

Hence, 26 is the correct alternative.

RRB NTPC Mock Test - 8 (English) - Question 36

Which answer figure will complete the pattern in the question figure?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 36

The figure required to complete the pattern should have two squares at right side and one circle and left side.

RRB NTPC Mock Test - 8 (English) - Question 37

Amit goes to his office by car at the speed of 80 km/hr and reaches 15 minutes earlier. If he goes at the speed 60 km/hr, he reaches 15 minutes late. What will be the speed (in km/hr) of the car to reach on time?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 37

Let the speed to reach on time be s.

Let the distance to office be d.

Time taken by car at 80 km/hr = x = d/s = d/80

Time taken by car at 60 km/hr = y = d/s = d/60

Time taken by car at s km/hr = z = d/s = d/s

Given: x = z – 15/60, y = z + 15/60

⇒ d/80 = d/s – 15/60 = d/s – 1/4 ⇒ d(1/80 – 1/s) = -1/4

⇒ d/60 = d/s + 15/60 = d/s + 1/4 ⇒ d(1/60 – 1/s) = 1/4

Dividing the two equations, we get

(1/80 – 1/s)/(1/60 – 1/s) = -1

⇒ 1/80 – 1/s = 1/s – 1/60

⇒ 2/s = 1/80 + 1/60 = 1/20(1/4 + 1/3) = (1/20)(7/12)

⇒ s = 40 × 12/7 = 480/7 km/h

RRB NTPC Mock Test - 8 (English) - Question 38

What is the relation between Abhi and Abhi’s father’s father’s only daughter-in-law’s brother?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 38

On the basis of given data we can draw the family tree as below.

Gender of Abhi is unknown but if we look at the options the only correct answer we can get is Uncle-Nephew relation.

Thus the relation we get is Abhi is the nephew of the other person who is his mother’s brother i.e. his uncle.

RRB NTPC Mock Test - 8 (English) - Question 39

The H.C.F. of two numbers is 18. First number is of three digits and Second number is of two digits and their L.C.M. is 936. The sum of the numbers is?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 39

Let the numbers be 18x and 18y where x and y are co-prime.

LCM of 18x and 18y = 18xy

According to the question,

18xy = 936

⇒ xy = 936/18

⇒ xy = 52

⇒ xy = 13 × 4

⇒ x =13 and y = 4

First number = 18 × 13 = 234

Second number = 18 × 4 = 72

∴ Sum of both numbers = 234 + 72 = 306

RRB NTPC Mock Test - 8 (English) - Question 40

There are five friends Suresh, Kaushal, Madhar, Amit and Ramesh. Suresh is shorter than Kaushal but taller than Ramesh. Madhur is the tallest. Amit is a little shorter than Kaushal but little taller than Suresh. If they stand in the order of their heights, who will be the shortest?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 40

Suresh is shorter than Kaushal but taller than Ramesh.

Ramesh < Suresh < Kaushal

Madhur is the tallest. Amit is a little shorter than Kaushal but little taller than Suresh.

Ramesh < Suresh < Amit < Kaushal < Madhur.

Hence, Ramesh is shortest.

RRB NTPC Mock Test - 8 (English) - Question 41

The SA node and AV node are associated with which of the following human organ?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 41
• The SA node and AV node are associated with Heart.
• They are located in the upper wall of the right atrium.
• SA node generates cardiac impulses whereas the AV node relays and intensifies cardiac impulses.
• The SA node is the Sinus Node.
• The AV node is Atrioventricular node
RRB NTPC Mock Test - 8 (English) - Question 42

A man sold 250 chairs and had a gain equal to selling price of 50 chairs. What is his proﬁt percentage?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 42

Let selling price of 1 chair = S.P

Cost price of 1 chair = C.P

Profit in selling 250 chairs = 50 S.P

Profit in selling 1 chair = 50/250 S.P = 0.2 S.P

Profit = S.P - C.P

⇒ 0.2 S.P = S.P - C.P

⇒ C.P = 0.8 S.P

Profit percentage = (profit/C.P) × 100 = (0.2 × S.P/0.8 × S.P) × 100 = 25%

RRB NTPC Mock Test - 8 (English) - Question 43

Select the related word from the given alternatives.
Tributary : River : : State : ?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 43

In this question, the logic that is being followed is that one element constitutes the other. Tributaries make RiversStates make a Country.

RRB NTPC Mock Test - 8 (English) - Question 44

Which of the following country is known as “Gift of Nile”?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 44
• Egypt is known as “Gift of Nile”.
• Reason: Every year in Egypt, the Nile overflows and creates a rich valley of black soil that is abundantly fertile.
• This fertility helped Egyptian civilization to flourish.
• The capital of Egypt is Cairo.
RRB NTPC Mock Test - 8 (English) - Question 45

One of the oldest rock cut Barabar Caves are located in which of the following Indian state?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 45
• Barabar Caves are the oldest rock cut caves that are located in Bihar.
• They are Located in the Jehanabad district of Bihar.
• They are a Part of Barabar and Nagarjuni hills
• They were Founded in 322-185 BCE.
RRB NTPC Mock Test - 8 (English) - Question 46

If x2 - 3x + 1 = 0, then what is the value of

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 46

x2 - 3x + 1 = 0

Dividing above eq. by x, we get,

x - 3 + 1/x = 0

x + 1/x = 3

If x + 1/x = n

x4 + 1/x4 = (n 2 - 2)- 2

Here, n = 3

x4 + 1/x4 = (9 - 2)2 - 2 = 47

RRB NTPC Mock Test - 8 (English) - Question 47

Using the following code and key decode the given coded word:
Code: Z B Y X M N Q B S L
Keys: t g i h r p s c a b
Coded word: Q Z M S Y B X Z

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 47

As per the keys, QZMSYBXZ represents straight.

RRB NTPC Mock Test - 8 (English) - Question 48

In the following figure, rectangle represents Dentists, circle represents Bloggers, triangle represents Comedians and square represents Boxers. Which set of letters represents Dentists who are either Bloggers or Comedians?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 48

Here the alphabets in rectangle represents Dentists: F, G, L, K, E, and C.

Circle represents Bloggers: H, I, J, G, L, and K.

Triangle represents Comedian: B, C, D, J, and K.

Square represents Boxers: A, H, F, and G.

Set of letters represents Dentists who are either Bloggers or Comedians are G, L, K, and C.

Hence, ‘GLKC’ is the correct answer.

RRB NTPC Mock Test - 8 (English) - Question 49

Who among the following is known for the discovery of Modern Steam Turbine?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 49
• Charles Parsons is known for the discovery of Modern Steam Turbine.
• A steam turbine is a device that extracts thermal energy from pressurized steam.
• The turbine generates rotary motion and it is suitable to be used to drive an electrical generator.
• It was invented in 1884.
RRB NTPC Mock Test - 8 (English) - Question 50

A and B started a business by investing in the ratio of 4 ∶ 7. After 6 months, C joined them investing the same amount as B. What would be the ratio of their share of profit after one year?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 50

Let, investment of A = Rs. 4x

Investment of B = Rs. 7x

Thus, Investment of C = Rs. 7x

The weighted ratio of investment of A, B, and C

⇒ 4x × 12 ∶ 7x × 12 ∶ 7x × 6

⇒ 48x ∶ 84x ∶ 42x

⇒ 8 ∶ 14 ∶ 7

∴ The ratio of their profit after one year = 8 ∶ 14 ∶ 7

RRB NTPC Mock Test - 8 (English) - Question 51

Rs. 5000 amounts to Rs. 6920 in 4 years at a certain rate of interest. If the rate becomes 1.5 times to itself, the amount of the same principal in 5 years will be:

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 51

P = Rs. 5000, S.I. = Rs. (6920 - 5000) = Rs. 1920, T = 4 years

By putting values, R = 48/5 % p.a.

New rate = (1.5 × 48/5) = 72/5 % p.a.

Now, P = Rs. 5000, R = 72/5 %, T = 5 years

By putting values, S.I. = Rs. 3600

∴ Amount = Rs. (5000 + 3600) = Rs.8600

RRB NTPC Mock Test - 8 (English) - Question 52

A student multiplied a number by 4/5 instead of 5/4. What is the percentage error in the calculation?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 52

Let the number multiplied be x

Expected answer = 5/4 × x = 1.25x

Answer obtained with wrong calculation = 4/5 × x = 0.8x

⇒ (1.25x – 0.8x) / (1.25x) × 100

∴ 0.45/1.25 × 100 = 36%

RRB NTPC Mock Test - 8 (English) - Question 53

A statement is given followed by two inferences I and II. You have to consider the statement to be true even if it seems to be at variance from commonly known facts. You have to decide which of the given inferences, if any, follow from the given statement.

Statement: Government of country Y has set up a special task force to counter terrorism.
Inference I: Country Y has just been hit by a terrorist attack.
Inference II: Country Y has been threatened by a possible terrorist attack.

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 53

We cannot infer from the statement that country Y has faced a terrorist attack or was threatened by terrorists.

Hence neither I nor II follows.

RRB NTPC Mock Test - 8 (English) - Question 54

What is the value of (A + B)– (A – B)– 6B(A– B2) if A = 125 and B = 8?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 54

We know that,

(A + B)3 = A3 + B3 + 3A2B + 3AB2

(A – B)3 = A3 – B3 – 3A2B + 3AB2

⇒ (A + B)– (A – B)3 = 2B3 + 6A2B

⇒ (A + B)– (A – B)– 6B(A2 – B2) = 2B3 + 6A2B – 6B(A– B2) = 8B3

∴ Required value = 8 × 83 = 8 × 512 = 4096

RRB NTPC Mock Test - 8 (English) - Question 55

What will come in place of question mark ‘?’ in the following question?​
[(289 + 87) ÷ 2 - 7 × 18 ÷ 2 + {(9 + 5) × 19} + 3 × 7 - 9] × 19 + 9 = ?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 55

[(289 + 87) ÷ 2 - 7 × 18 ÷ 2 + {(9 + 5) × 19} + 3 × 7 - 9] × 19 + 9 = ?

[376 ÷ 2 - 7 × 18 ÷ 2 + {(9 + 5) × 19} + 3 × 7 - 9] × 19 + 9 = ?

? = [188 - 7 × 18 ÷ 2 + 266 + 3 × 7 - 9] × 19 + 9

? = [188 - 7 × 9 + 266 + 3 × 7 - 9] × 19 + 9

? = [188 - 63 + 266 + 3 × 7 - 9] × 19 + 9

? = [188 - 63 + 266 + 21 - 9] × 19 + 9

? = 7657 + 9

? = 7666.

RRB NTPC Mock Test - 8 (English) - Question 56

Which among the following country is known as Land of Roses?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 56
• Bulgaria is also known as the Land of Roses.
• The Capital of Bulgaria is Sofia.
• Official languages of Bulgaria is Bulgarian.
• Rumen Radev is the president of Bulgaria.
RRB NTPC Mock Test - 8 (English) - Question 57

Pampas grasslands are located in which of the following continents?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 57
• Pampas grasslands are located in the South American continent.
• They spread through Argentina, Uruguay, and Brazil.
• They have a temperate climate with precipitation of about 600 to 1,200 mm.
RRB NTPC Mock Test - 8 (English) - Question 58

Directions: In each question below is given one/more statements that followed by two assumptions numbered I and II. Consider the statement and decide which of the given assumptions is implicit.

Statement: A mobile company has requested the users to return a device X as soon as possible and promises them to replace it.
Assumption I: The device X has some major glitch in it.
Assumption II: The mobile company has given a scheme in which old device X will be replaced with new device X.

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 58

A company would not replace the product if there had been no problem. Hence only assumption I is implicit and option 1 is correct.

RRB NTPC Mock Test - 8 (English) - Question 59

Recently, Namvar Singh passed away on February 19, 2019. He was a famous _________.

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 59
• Namvar Singh was one of the contemporary Hindi literature's greatest writers and critics.
• He died on 19 February 2019 after a prolonged illness.
• His notable writings include "Chhayavaad", "ItihasAurAlochana", "Kahaani Nayi Kahaani", "KavitaKeNayePratimaan", "DusriParampara Ki Khoj".
• He also worked as a professor in his alma mater BHU as well as Jodhpur University and Jawaharlal Nehru University (JNU).
RRB NTPC Mock Test - 8 (English) - Question 60

The Dogri language is primarily associated with which of the following Indian state?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 60
• The Dogri language is primarily associated with Jammu and Kashmir.
• It is an Indo-Aryan language.
• The people who speak the Dogri language are called Duggar.
• Dogri was recognized as an official language of India by including it in the 8th schedule of the Indian Constitution.
RRB NTPC Mock Test - 8 (English) - Question 61

Gandhi-Irwin Pact was signed in the year _______?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 61
• Gandhi–Irwin Pact was signed on 5 March 1931.
• The Gandhi-Irwin Pact was a political agreement signed by Mahatma Gandhi and Lord Irwin.

The important pacts signed in this agreement were:

• The government will release most of the civil disobedience volunteers.
• Indian National Congress will discontinue Civil disobedience movement.
• The congress will participate in the second Round Table Conference.
• Tax on salt will be removed.
RRB NTPC Mock Test - 8 (English) - Question 62

What least number must be added to 8961 to make it exactly divisible by 84?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 62

When 8961 is divided by 84, we get 106 as quotient and 57 as Remainder

i.e 8961 = 106 × 84 + 57

So, to make it exactly divisible by 84, 84 – 57 = 27 should be added.

RRB NTPC Mock Test - 8 (English) - Question 63

The Israeli Parliament is also known as ________.

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 63
• The Israeli Parliament is also known as Knesset.
• Yuli-Yoel Edelstein is the Speaker of Knesset since 2013.
• Elections in Israel are based on nationwide proportional representation.
• Knesset is located in Givat Ram, Jerusalem.
RRB NTPC Mock Test - 8 (English) - Question 64

Recently Abhinandan Varthaman crossed into Pakistan territory. He ranked as a ________ in the Indian Air Force.

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 64
• Wing Commander Abhinandan Varthaman is an Indian fighter pilot and officer in the Indian Air Force.
• He flies an Indian Air Force Mig-21 Bison.
• He shots down a Pakistani F-16 on 27 February 2019 in a dog fight.
• He was caught by Pakistan defence forces but later he returned to India on 1 March 2019 through the Wagah border.
RRB NTPC Mock Test - 8 (English) - Question 65

What is the approximate distance of Sun from the Earth?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 65
• The distance of Sun from the Earth is approximately 150 million kilometers
• It is calculated by Astronomer Christiaan Huygens in 1653.
• The Earth is receding from the Sun on an average of 15 cm per year.
• Earth is the third planet from the Sun.
• Earth is closest to the sun every year around January 3 which is known as perihelion.
• It is farthest from the sun every year around July 4 which is known as aphelion.
RRB NTPC Mock Test - 8 (English) - Question 66

For the figure given below, find the value (in degrees) of 2∠A + ∠B.

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 66

∠ACD (outer angle) = 180° – 45° = 135°

∠CAB + ∠CBA = ∠ACD (outer angle) = 135°

AC = BC (Both are same side given) so ∠CAB = ∠CBA = x°

⇒ x° + x° + 45° = 180°

⇒ 2x° = 135°

⇒ x° = 67.5°

∴ 2∠A + ∠B = 2 × 67.5 + 67.5 = 202.5°

RRB NTPC Mock Test - 8 (English) - Question 67

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 67
• He wrote it when he was in prison at Mandalay in Burma.
• Bal GangadharTilak was the first leader of the Indian Independence Movement.
• He is known as "father of Indian Unrest”.
• He also earned the title “Lokamanya” which means 'the person who is respected by people and favorite of all’.
RRB NTPC Mock Test - 8 (English) - Question 68

P and Q can do a work in 12 days. Q and R can do the same work in 16 days and R and P can do it in 24 days. Find the approximate time in which P, Q and R can finish the work together.

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 68

Since, P and Q take 12 days to complete the total amount of work.

∴ In 1 day the amount of work completed by P and Q would be = 1/12

Similarly, Q and R take 16 days to complete the total amount of work.

∴ In 1 day the amount of work completed by P and Q would be = 1/16

Since, R and P take 24 days to complete the total amount of work.

∴ In 1 day the amount of work completed by P and Q would be = 1/24

Let’s assume the individual efficiencyof P, Q and R to complete the work in 1 day is p, q and r respectively.

⇒ 2(p + q + r)

⇒ p + q + r = 3/32

∴ Total no. of days required = 32/3 days. = 10.66 = 11 days (approximate.)

RRB NTPC Mock Test - 8 (English) - Question 69

In the given question, select the related figure from the given figures.

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 69

From first figure to second figure, water image of the first shape is taken and for the rest shapes mirror image is taken.

Hence option (3) is correct.

RRB NTPC Mock Test - 8 (English) - Question 70

Saurabh Chaudhary is associated with which of the following sports?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 70
• Saurabh Chaudhary is associated with Shooting.
• He became the youngest Indian gold medalist at the Asian Games.
• He is the only Indian shooter to won gold medal in the Youth Olympic, Asian games, Junior ISSF world championship, ISSF World Cup and Asian Airgun championship.
RRB NTPC Mock Test - 8 (English) - Question 71

The International Mother Language Day is celebrated every year on ________.

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 71
• International Mother Language Day is celebrated every year on 21st February.
• The main purpose of celebrating this day is to promote the awareness of language and cultural diversity all across the world.
• It was first announced by UNESCO on November 17, 1999. Since then it is being celebrated every year.
• This day was initiated by Bangladesh for Bangla language.
RRB NTPC Mock Test - 8 (English) - Question 72

Which of the following is the only river integrated into the Indian Thar Desert?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 72
• Luni is the only river integrated into the Indian Thar Desert.
• It originates in the Pushkar valley of the Aravalli Range, near Ajmer and ends in the marshy lands of Rann of Kutch in Gujarat.
• It was first known as Sagarmati, then after passing Govindgarh, it meets its tributary Saraswati, which originates from PushkarLake, and from then on it gets its name Luni.
• The Thar Desert is also known as the Great Indian Desert.
RRB NTPC Mock Test - 8 (English) - Question 73

Octopus belongs to which of the following phylum?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 73
• Octopus belongs to the phylum Mollusca.
• Many organisms belonging to this phylum have a calciferous shell.
• The phylum includes animals like snails, octopuses, squids, oysters, etc.
• The bodies are generally very soft and are covered by the hard exoskeleton.
• The body is divided into head, muscular foot, and visceral mass.
• They reproduce through gametic fusion.
• Their Heart consists of one or two auricles and one ventricle.
RRB NTPC Mock Test - 8 (English) - Question 74

Find out the wrong term from the following.

O1Q, K2N, U4Z, E1H, I2L

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 74

The middle number shows the difference of letters between the given two letters.

E.g. The letter between O and Q is only 1 letter that’s why it is O1Q.

In E1H, difference between E and H is 2 but in series it is given 1.

Thus, wrong term is E1H.

RRB NTPC Mock Test - 8 (English) - Question 75

In the following question, select the odd word from the given alternatives.

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 75

All options except ‘Mathematics’ is a language while Mathematics is a subject.

RRB NTPC Mock Test - 8 (English) - Question 76

In the following question, select the number which can be placed at the sign of equation mark (?) from the given alternatives.

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 76

The method followed here is,

Number of the first column × number of second column = number of third column.

12 × 13 = 156

15 × 13 = 195

Same method will be followed to find out the missing number:

→ 14 × ? = 154

→ ? = 154/14 → 11

Hence, missing number is 11.

RRB NTPC Mock Test - 8 (English) - Question 77

By which of the following act Sikkim became the 22nd State of the Indian Union?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 77
• By Act 36, Sikkim became the 22nd State of the Indian Union.
• Sikkim was an independent kingdom ruled by the Namgyal, a dynasty founded by Phuntsog Namgyal in 1642.
• Sikkim became the 22nd state of the Indian Union on 16 May 1975
• Kazi Lhendup Dorji became the first Chief Minister of the state.
RRB NTPC Mock Test - 8 (English) - Question 78

Which of the following Indian city is also known as ‘Wine Capital of India’?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 78
• Nashik is also known as ‘Wine Capital of India’
• It is called the "Wine Capital of India" because almost half of India’s wineries are located in Nashik.
• Nashik is an ancient holy city in the northwest region of Maharashtra
RRB NTPC Mock Test - 8 (English) - Question 79

In the following question, by using which mathematical operators will the expression become correct?
60_10_4_10 = 14

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 79

Using BODMAS rule,

1) 60 ÷ 10 × 4 - 10 = 14, True

2) 60 - 10 × 4 ÷10 = 56 ≠ 14

3) 60 × 10 - 4 ÷ 10 = 599.6 ≠ 14

4) 60 × 10 ÷ 4 - 10 = 140 ≠ 14

Hence, ‘÷, ×, -’ is the correct set of symbols.

RRB NTPC Mock Test - 8 (English) - Question 80

Which of the following is the largest phylum in the animal kingdom?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 80
• Phylum Arthropoda is the largest phylum in the animal kingdom.
• Arthropods have jointed limbs.
• Their body is segmented into three regions - Head, Thorax, and Abdomen.
• Most of the insects like crabs, spiders, scorpions, sea spiders and mites etc fall under the phylum Arthropoda
• They make up about 80 percent of the known species of animals.
• The second largest phylum after Arthropoda is Phylum Mollusca.
RRB NTPC Mock Test - 8 (English) - Question 81

The famous dancer Rukmini Devi Neela kanda Sastri was associated with which of the following Indian classical dance form?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 81
• Rukmini Devi Neelakanda Sastri was associated with Indian classical dance form of Bharatanatyam.
• She was also awarded Padma Bhushan in 1956.
• She was the first Indian woman to be nominated in Rajya Sabha.
• She died on 24 February 1986
RRB NTPC Mock Test - 8 (English) - Question 82

In the question below is given a statement followed by two conclusions numbered I and II. You have to assume everything in the statement to be true, then consider the two conclusions together and decide which of them logically follow beyond a reasonable doubt from the information given in the statement. Give answer.

Statement:
Chicago is the most expensive city.

Conclusions:
I. Singapore is less expensive than Chicago.
II. Angola is more expensive than Singapore.

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 82

The first conclusion follows as Chicago is the most expensive one so other cities will be less expensive than it. Since the statement clearly says that Chicago is the most expensive city then it follows that no other city is more expensive than Chicago. Also, Angola is not a city but a country. Hence, conclusion II does not follow.

RRB NTPC Mock Test - 8 (English) - Question 83

In the Visible spectrum of light, which of the following colour has the longest wavelength?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 83

According to the given options, orange has the longest wavelength.

In the Visible spectrum of light, Red colour has the longest wavelength.

The ascending order of the colours in visible spectrum according to their wavelength is as follows:

• Violet
• Indigo
• Blue
• Green
• Yellow
• Orange
• Red
RRB NTPC Mock Test - 8 (English) - Question 84

Which one of the given responses would be a meaningful order of the following?

1. Universe

2. Earth

3. India

4. Milky Way

5. Mumbai

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 84

Mumbai is a part of India; India is a part of Earth; Earth is a part of Milky Way and Milky Way is a part of Universe.

Hence, the arrangement is as follows – Mumbai, India, Earth, Milky Wayand Universe.

Thus: 5, 3, 2, 4, 1 is the correct option.

RRB NTPC Mock Test - 8 (English) - Question 85

Who among the following has assumed the charge of the Ministry of Finance in May 2019?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 85
• Nirmala Sitharaman assumed charge as the Union Minister of Finance & Corporate Affairs in May 2019.
• Nirmala Sitharaman has served as the Union Defence Minister since 2017.
RRB NTPC Mock Test - 8 (English) - Question 86

Which of the following is suitable to be used as a shaving glass?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 86
• A concave mirror is suitable to be used as a shaving glass.
• It helps us to see the enlarged image of a face.
• Also, the image formed is erect, virtual and of the same size as of the object.
• It is also used as a reflector for the headlights of a vehicle and searchlights.
RRB NTPC Mock Test - 8 (English) - Question 87

If the simple interest on a sum of money for 2 years at 5% per annum is Rs. 250, what is the compound interest (approximate) on the same at the same rate and for the same time?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 87

Interest from simple interest = PRT/100

The formula for CI at annual compound interest, including principal sum, is: CI =

Where:

CI = Compound Interest

P = the principal investment amount (the initial deposit or loan amount)

r = the annual interest rate (decimal)

n = the number of times that interest is compounded per year

t = the number of years the money is invested or borrowed for

SI = Rs. 250

Principal = 250 × 100/(2 × 5) = Rs. 2500

CI = (2500(1 + 5/100)2 - 2500) = Rs. 256.25

RRB NTPC Mock Test - 8 (English) - Question 88

The Kosi river joins the river Ganga in _______ district of Bihar.

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 88
• The Kosi river joins Ganga in Katihar district of Bihar.
• Kosi is also known as the sorrow of Bihar as this causes a flood in the region.
• The Kosi River is also known as SaptaKosi because of its seven tributaries.
• The main tributaries of Kosi river are Tamor River, Arun River, and Sun Koshi, Tamakoshi River, LikhuKhola.
RRB NTPC Mock Test - 8 (English) - Question 89

Which answer figure will complete the pattern in the question figure?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 89

Thus image at option 3 completes the given figure.

RRB NTPC Mock Test - 8 (English) - Question 90

The company had to send food of ‘X’ units for garrison of 250 soldiers expected to stay at a fort for 15 days. If the total number of soldiers turned out to be 350, the company should exceed the supplies by what value?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 90

Food needed for 250 soldiers for 15 days = 250 × 15 units

X = 250 × 15

Food needed for 350 soldiers for 15 days = 350 × 15 units

350 × 15 = 1.4 X

Increase in food supplies = 1.4X - X = 0.4X

RRB NTPC Mock Test - 8 (English) - Question 91

Average of 7 consecutive odd numbers is 31. If the previous and next odd number to these 7 odd numbers are also included, then what will be the new average?

Detailed Solution for RRB NTPC Mock Test - 8 (English) - Question 91

Let 7 odd consecutive numbers are (n - 6), (n - 4), (n - 2), n, (n + 1), (n + 4), (n + 6)

Given that, Average = 31

Average = middle term = n = 31

If we add previous and next odd number to these 7 odd numbers, again middle term will be

n = 31

∴ New average = 31

RRB NTPC Mock Test - 8 (English) - Question 92

What is the SI Unit of Capacitance?