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RRB Group D Mock Test - 2 - Railways

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100 Questions MCQ Test - RRB Group D Mock Test - 2

RRB Group D Mock Test - 2 for Railways 2023 is part of Railways preparation. The RRB Group D Mock Test - 2 questions and answers have been prepared according to the Railways exam syllabus.The RRB Group D Mock Test - 2 MCQs are made for Railways 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for RRB Group D Mock Test - 2 below.

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RRB Group D Mock Test - 2 - Question 1

Father is 5 yrs older than the mother and the mother's age now is thrice the age of the daugther. The daughter is now 10 yrs old. What was the father's age when the daughter was born?

A.
20 yrs
B.
15 yrs
C.
25 yrs
D.
30 yrs

Detailed Solution for RRB Group D Mock Test - 2 - Question 1

Let the daughter's age be x
⇒ Mother's age = 3x
⇒ Father's age = 3x + 5
According to question,
x = 10
⇒ Father's age = 3(10) + 5 = 35 years
But, when daughter was born
Father's age = (35 - 10) years = 25 years

RRB Group D Mock Test - 2 - Question 2

The square root of (272²-128²) is

A.
256
B.
200
C.
240
D.
144

Detailed Solution for RRB Group D Mock Test - 2 - Question 2

= √ (272²- 128²)

= √( 73984 - 16384)

= √ 57600

= 240

RRB Group D Mock Test - 2 - Question 3

Consider the following statem-ents (As per provisional popul-ation data of Census 2011)?
A. India's Literacy rate is 74.04%.
B. India's Males literacy rate is 82.14%.
C. India's Female literacy rate is 65.46%.
D. Kerala state has the highest Literacy Rate with 93.91%.
E. Orissa state has the Lowest Literacy Rate with 63.82%.
Which of the statements given above is/are incorrect?

A.
A only
B.
B only
C.
C only
D.
E only

RRB Group D Mock Test - 2 - Question 4

All the six members of a family A, B, C, D, E and F are travelling together. B is the son of C but C is not the mother of B. A and C are a married couple. E is the brother of C. D is the daughter of A. F is the brother of B.
How is E related to D?

A.
Father
B.
Brother
C.
Uncle
D.
None of these

RRB Group D Mock Test - 2 - Question 5

Size of a tile is 9 inches by 9 inches. The number of tiles needed to cover a floor of 12 feet by 12 feet is

A.
24
B.
32
C.
144
D.
256

Detailed Solution for RRB Group D Mock Test - 2 - Question 5

Length of floor = 12 feet
Breath of floor = 12 feet
So Area of floor = 12 x12 = 144 feet
Area of tile = 9/12 x 9/12 = 9/16 feet
So the number of tile = 144 /9/16 = 256 tiles

RRB Group D Mock Test - 2 - Question 6

The average annual income (in Rs.) of certain argicultural workers is S and that of other workers is T. The number of agricultural workers is 11 times that of other workers. Then the average monthly income (in Rs.) of all the workers is:

A.
(S + T)/2
B.
(S + 11T)/2
C.
1/11S + T
D.
(11S + T)/12

Detailed Solution for RRB Group D Mock Test - 2 - Question 6

Let the number of other workers be x
Then, number of agricultural workers = 11x
Total number of workers = 12x
∴ Average monthly income

RRB Group D Mock Test - 2 - Question 7

The Poet Harisena was the courtier of:

A.
Samudragupta
B.
Skandagupta
C.
Chandragupta II
D.
Lakshman Sena

RRB Group D Mock Test - 2 - Question 8

A man takes twice as long to row a distance against the stream as to row the same distance in favour of the stream. The ratio of the speed of the boat (in still water) and the stream is :

A.
2:1
B.
3:1
C.
3:2
D.
4:3

Detailed Solution for RRB Group D Mock Test - 2 - Question 8

Tupstrean = 2.tdownstream
⇒ Speed up/Speed down = t + 1/t - 1 = 3/1
⇒ 3 : 1

RRB Group D Mock Test - 2 - Question 9

Choose the analogous pair.
Editor : Newspaper

A.
Lecturer : University
B.
Teacher : School
C.
Nurse : Hospital
D.
Architect : Design

RRB Group D Mock Test - 2 - Question 10

In a certain code language JOINTLY is written as IPHOSMX. How is SERMON written in that code?

A.
RFQNNO
B.
TFSNPO
C.
TDQLNM
D.
RFQNMP

RRB Group D Mock Test - 2 - Question 11

Choose the word which is least like the other words in the group .

A.
Deck
B.
Quay
C.
Stern
D.
Bow

RRB Group D Mock Test - 2 - Question 12

Complete the analogous pair.
Brick : Building :: ? : Letter

A.
Phrase
B.
Word
C.
Ink
D.
Alphabet

RRB Group D Mock Test - 2 - Question 13

The difference between simple and Compound Interest on a sum of money for 2 yrs at 10% per annum is Rs 65. The sum is

A.
Rs 65650
B.
Rs 65065
C.
Rs 6565
D.
Rs 6500

Detailed Solution for RRB Group D Mock Test - 2 - Question 13

RRB Group D Mock Test - 2 - Question 14

'Atlantis' is the name of the space shuttle launched by

A.
Britain
B.
India
C.
Australia
D.
America

RRB Group D Mock Test - 2 - Question 15

Find the number of triangles and squares in the given figure.

A.
26 triangles, 5 squares
B.
28 triangles, 5 squares
C.
26 triangles, 6 squares
D.
28 triangles, 6 squares

Detailed Solution for RRB Group D Mock Test - 2 - Question 15

Triangles:

The simplest triangles are JBO, BKO, KDO, DFO, FGO, GHO, HIO, IJO, ABJ, BCK, CKD and DEF i.e.12 in number.

The triangles composed of two components each are IBO, BDO, DGO, GIO, ABO, CDO, CBO, CBD and DEO i.e. 9 in number.

The triangles composed of four components each are IBD, BDG, DGI, GIB, ACO and COE i.e. 6 in number.

There is only one. triangle i.e. ACE composed of eight components.

Thus, there are 12 + 9 + 6 + 1 = 28 triangles in the given figure.

Squares:

The squares composed of two components each are BKOJ, KDFO, OFGH and JOHI i.e. 4 in number.

There is only one square i.e. CDOB composed of four components.

There is only one square i.e. BDGI composed of eight components.

Thus, there are 4 + 1 + 1 = 6 squares in the given figure.

RRB Group D Mock Test - 2 - Question 16

Which country's currency code is IRR?

A.
Iran
B.
Iraq
C.
India
D.
Indonesia

RRB Group D Mock Test - 2 - Question 17

Which of the following taxes is collected by the Panchayat?

A.
Sales tax
B.
Customs duty
C.
Excise duty
D.
Professional tax

RRB Group D Mock Test - 2 - Question 18

The sheet of paper shown in the figure (X) in each problem, is folded to form a box. Choose from amongst the alternatives (I), (II), (III) and (IV), the boxes that are similar to the box that will be formed.

A.
I only
B.
II and III only
C.
II and IV only
D.
I, II and III only

Detailed Solution for RRB Group D Mock Test - 2 - Question 18

The figure (X) is similar to fig. V.
The cubes in fig. (II) and (IV) have the shaded face adjacent to the face bearing a square.
Hence, the cubes in these two fig. can't be formed.
Therefore, only cubes in fig. (I) and (III) can't be formed

RRB Group D Mock Test - 2 - Question 19

The Speaker of the Lok Sabha has to address his letter of resignation to

A.
Prime Minister of India
B.
President of lndia
C.
Dy. Speaker of the Lok Sabha
D.
Chairman of the Rajya Sabha

RRB Group D Mock Test - 2 - Question 20

While facing east you turn your left and walk 10 metres, then turn to your left and walk 10 metres and now you turn 45’ towards your right and walk straight to cover 25 metres. Now in which direction are you from your starting point?

A.
North-East
B.
South-West
C.
South-East
D.
North-West

RRB Group D Mock Test - 2 - Question 21

According to the latest report by the Sanctum Wealth Management, India will become the ______ largest growing economy in the world in 2018

A.
Fourth
B.
Third
C.
Second
D.
First

RRB Group D Mock Test - 2 - Question 22

Based on the latest State Bank of India (SBI) Ecowrap report, the GVA estimate for current fiscal is estimated to trend higher at _____ percent from the projected 6.1 per cent

A.
6.5-6.6%
B.
6.4-6.5%
C.
6.2-6.3%
D.
6.3-6.4%

RRB Group D Mock Test - 2 - Question 23

Charles Correa has distinguished himself in which of the following fields?

A.
Western Music
B.
Painting
C.
Ballet
D.
Architecture

RRB Group D Mock Test - 2 - Question 24

The famous Dilwara Temples are situated in

A.
Uttar Pradesh
B.
Rajasthan
C.
Maharashtra
D.
Madhya Pradesh

RRB Group D Mock Test - 2 - Question 25

Which of the following is not a factor when categorizing a computer?

A.
amount of main memory the CPU can use.
B.
capacity of the storage devices.
C.
cost of the system.
D.
where it was purchased

RRB Group D Mock Test - 2 - Question 26

Which of the following would help in speedings up the data transfer over net ?

A.
Data Formatting
B.
Decentralised Control
C.
Allocating Adequate Bandwidth
D.
All of the above

RRB Group D Mock Test - 2 - Question 27

In 1955, Imperial Bank of India, a leading commercial bank of that time, was nationalised and renamed as:

A.
Central Bank of India
B.
Bank of India
C.
Indian Bank
D.
State Bank of India

RRB Group D Mock Test - 2 - Question 28

Resources being limited, they should be conserved. This can be done by

A.
reducing the present rate of consumption.
B.
reducing the present rate of exploitation.
C.
stopping their exploitation.
D.
using alternatives and stopping wasteful use.

RRB Group D Mock Test - 2 - Question 29

Which of the following countries leads in cocoa production?

A.
Brazil
B.
Ivory coat
C.
Ghana
D.
Nigeria

RRB Group D Mock Test - 2 - Question 30

Which of the following States is called the "Tiger State" of India?

A.
Assam
B.
Gujarat
C.
West Bengal
D.
M.P.

RRB Group D Mock Test - 2 - Question 31

Which of the following social evils were absent from the Chola society?

A.
Slavery
B.
Devdasi system
C.
Purdah system
D.
Untouchability

RRB Group D Mock Test - 2 - Question 32

Who is credited with initiating administrative and revenue reforms for consolidating the British rule in India

A.
Lord dive
B.
Lord Cornwallis
C.
Lord ‘William Bentick
D.
Lord Warren Hastings

RRB Group D Mock Test - 2 - Question 33

What is the Saudi Arabian Currency called?

A.
Dirham
B.
Peso
C.
Dinar
D.
Riyal

RRB Group D Mock Test - 2 - Question 34

The recently published "Midnight Diaries" is an autobiography of

A.
Alberto K. Fujimori
B.
Chen Shiu-bian
C.
Boris Yeltsin
D.
Robert G. Mugabe

RRB Group D Mock Test - 2 - Question 35

Which one of the following does a TV remote control unit use to operate a TV set?

A.
Light waves
B.
Sound Waves
C.
Microwaves
D.
Radio Waves

RRB Group D Mock Test - 2 - Question 36

Most of the desert plants blooms during night time because

A.
their blooming is controlled by low temperature
B.
they are sensitive to the phases of moon
C.
the desert insects eat away flowers during day time.
D.
the desert insects are active during night time

RRB Group D Mock Test - 2 - Question 37

Which form of coal is mainly suitable for producing thermal power?

A.
Anthracite
B.
Bituminus
C.
Lignite
D.
Peat

RRB Group D Mock Test - 2 - Question 38

Consider the following statements about accetylene:
1. It is used in welding industry
2. It is a raw material for preparing plastics.
3. It is easily obtained by mixing silicon carbide and water.
Of these statements

A.
1 and 2 are correct
B.
1 and 3 are correct
C.
2 and 3 are correct
D.
1, 2 and 3 are correct

RRB Group D Mock Test - 2 - Question 39

A straight horizontal conductor carries a steady electric current from south to north. Which one of the following events would happen if a small magnetic compass is placed just above the wire?

A.
The needle remains perpendicular to the conductor
B.
The needle remains parallel to the conductor
C.
The north pole of the needle is deflected towards east
D.
The north pole of the needle is deflected towards west

RRB Group D Mock Test - 2 - Question 40

The mass of a body on earth is 100 kg (acceleration due to gravity, ge = 10 m/s2). If the acceleration due to gravity on the moon is (ge/6), then the mass of the body on the moon is

A.
100/6 kg
B.
60 kg
C.
100 kg
D.
600 kg

RRB Group D Mock Test - 2 - Question 41

An air bubble in water will act like a

A.
Convex mirror
B.
Conves lens
C.
Concave mirror
D.
Concave lens

RRB Group D Mock Test - 2 - Question 42

Which organelle in the Cell, other than nucleus, contains DNA?

A.
Centriole
B.
Golgi apparatus
C.
Lysosome
D.
Mitochondrion

RRB Group D Mock Test - 2 - Question 43

Match List I with List II and select the correct answer:

A.
Potassium bromide 1. Fertiliser
B.
Potassium nitrate 2. Photography
C.
Potassium sulphate 3. Bakery
D.
Monopotassium tartarate 4. Gunpowder

RRB Group D Mock Test - 2 - Question 44

Which one of the Chola kings conquered Ceylon?

A.
Aditya I
B.
Rajaraja I
C.
Rajendra
D.
Vijayalaya

RRB Group D Mock Test - 2 - Question 45

An angle which is greater than 180^o but less than 360^o is called a/an :

A.
reflex angle
B.
right angle
C.
obtuse angle
D.
acute angle

RRB Group D Mock Test - 2 - Question 46

According to a South China Morning Post (SCMP) report, China is planning to build its second foreign naval base in which country?

A.
Afghanistan
B.
Pakistan
C.
India
D.
Nepal

RRB Group D Mock Test - 2 - Question 47

As per data released by Sri Lanka Tourism Development Authority, which country is the Sri Lanka’s top source of tourists in 2017?

A.
India
B.
Canada
C.
Pakistan
D.
Australia

RRB Group D Mock Test - 2 - Question 48

Find the missing character.

A.
535
B.
577
C.
755
D.
775

Detailed Solution for RRB Group D Mock Test - 2 - Question 48

In the first column, 3 x 100 + 5 x 9 = 345.
In the second column, 4 x 100 + 6 x 10 = 460.
∴ In the third column, missing number = 5 x 100 + 7 x 11 = 577.

RRB Group D Mock Test - 2 - Question 49

The correct model of DNA structure is that proposed by

A.
Jacob and Monod
B.
Watson and Crick
C.
Khorana
D.
Baltimore and Temin

RRB Group D Mock Test - 2 - Question 50

What is the next alphabet in this sequence?
Z, X, T, N,______

A.
E
B.
F
C.
G
D.
H

RRB Group D Mock Test - 2 - Question 51

Which of the following diagrams indicates the best relation between Elephants, Wolves and Animals ?

A.
B.
C.
D.

Detailed Solution for RRB Group D Mock Test - 2 - Question 51

Elephant and Wolves bear no relationship to each other while both are animals.

RRB Group D Mock Test - 2 - Question 52

How many such pairs of letters are there in the word 'NURSING' which have as many letters between them in the word as in the alphabet?

A.
One
B.
Three
C.
Five
D.
Six

RRB Group D Mock Test - 2 - Question 53

Arrange the given words in a meaningful sequence:
1.Index 2.Contents 3.Title 4.Chapters 5.Introduction

A.
3,2,5,1,4
B.
2,3,4,5,1
C.
5,1,4,2,3
D.
3,2,5,4,1

RRB Group D Mock Test - 2 - Question 54

In questions below, equations have become wrong due to wrong orders of signs. Choose the correct order of signs from the alternative given.
5x6÷3-12=13-6

A.
+÷ +=+
B.
x÷+-=
C.
x+÷=-
D.
++-=-

RRB Group D Mock Test - 2 - Question 55

40 litres of a mixture of milk and water contains 10% of water. The water to be added to make the water content 20% in the new mixture is

A.
6 litres
B.
6.5 litres
C.
5.5 litres
D.
5 litres

RRB Group D Mock Test - 2 - Question 56

Which is the first State in India to launch High Risk Pregnancy (HRP) Portal which helps in early identification of high-risk pregnant cases, ensures timely referral of such cases to the civil hospitals for further management and delivery by specialists?

A.
Punjab
B.
Assam
C.
Kerala
D.
Goa

RRB Group D Mock Test - 2 - Question 57

The Union Home Ministry has appointed a 12-member inter-ministerial committee to take a call on the playing of the national anthem in cinema halls and public places. Who will head this committee?

A.
Shankar Aggarwal
B.
Gitesh Sarma
C.
Rajiv Gauba
D.
B.R. Sharma

RRB Group D Mock Test - 2 - Question 58

Choose the correct alternative that will continue the same pattern and fill in the blank.
83, 73, 93, 63, __, 93, 43

A.
33
B.
53
C.
73
D.
93

Detailed Solution for RRB Group D Mock Test - 2 - Question 58

This is a simple subtraction series in which a random number, 93, is interpolated as every third number. In the subtraction series, 10 is subtracted from each number to arrive at the next.

RRB Group D Mock Test - 2 - Question 59

The smallest natural number which is perfect square and which ends in 3 identical digits lies between

A.
1000 and 2000
B.
2000 and 3000
C.
3000 and 4000
D.
4000 and 5000

RRB Group D Mock Test - 2 - Question 60

In a certain year, the population of a certain town was 9000. If in the next year the population of males increases by 5% and that of the females by 8% and the total population increases to 9600, then what was the ratio of population males and females in that given year?

A.
4:5
B.
5:4
C.
2:3
D.
None of these

RRB Group D Mock Test - 2 - Question 61

Complete the analogous pair.
Given Group : (84, 92, 109)

A.
9, 17, 36
B.
34, 42, 59
C.
7, 16, 32
D.
63, 71, 89

Detailed Solution for RRB Group D Mock Test - 2 - Question 61

RRB Group D Mock Test - 2 - Question 62

Abhijit started a business investing Rs 70000. Anuja joined him after 6 months with an amount of Rs 105000 and Sunil joined them with Rs 1.4 lakhs after 6 months. The amount of profit earned should be distributed in what ratio among Abhijit, Anuja and Sunil respectively, three yrs after Abhijit started the business?

A.
42:45:56
B.
7:6:10
C.
12:15:16
D.
None of these

RRB Group D Mock Test - 2 - Question 63

Who has been sworn in as the Deputy National Security Adviser (NSA) by the Union Government?

A.
Arvind Gupta
B.
Alok Joshi
C.
Rajinder Khanna
D.
Sanjeev Tripathi

RRB Group D Mock Test - 2 - Question 64

Who among the given has recently been honored with the Janakavi P Sawlaram Award?

A.
Bhalchandra Kulkarni
B.
Maya Jadhav
C.
Vishwas Patil
D.
Sudhir Dalvi

RRB Group D Mock Test - 2 - Question 65

Tap A fills a reservoir in 15 hrs and tap B in 20 hrs while tap C can empty it in 60 hrs. The servant unknowingly opened all the taps to fill the reservoir. It was filled in

A.
10.0 hrs
B.
12.5 hrs
C.
11 hrs
D.
11.5 hrs

RRB Group D Mock Test - 2 - Question 66

2/3rd of a consignment was sold at a profit of 6% and rest at a loss of 3%. If the overall profit is Rs. 1080, the value of the consignment was

A.
Rs 18000
B.
Rs 72000
C.
Rs 36000
D.
Rs 360,000

RRB Group D Mock Test - 2 - Question 67

There are 43 students in a class. If the rank of Raja from the beginning is 21st, then what will be his position from the last?

A.
21
B.
22
C.
23
D.
24

RRB Group D Mock Test - 2 - Question 68

Rs. 8840 is divided between x and y in such in such a manner that for every Rs. 6 that x gets, y gets Rs.7. Their shares are

A.
Rs. 4080, Rs. 4760
B.
Rs. 5328, Rs. 2411
C.
Rs. 4180, Rs. 4660
D.
Rs. 4280, Rs. 4560

Detailed Solution for RRB Group D Mock Test - 2 - Question 68

x ′ s share = 6/13 x 8840 = R s . 4080.

y ′ s share = 7/13 x 8840 = R s . 4760.

RRB Group D Mock Test - 2 - Question 69

Who among the following was the Guru of the Demons?

A.
Vasishtha
B.
Brahaspati
C.
Shukracharya
D.
Kashyapa

RRB Group D Mock Test - 2 - Question 70

A 100 metres long train running at the speed of 60 km/hr crosses another train running in the opposite directions in 9 secs. If the length of the second train was 150 metres, what was the speed of the second train in km/hr?

A.
40
B.
50
C.
60
D.
None of these

RRB Group D Mock Test - 2 - Question 71

Find out from amongst the four alternatives as to how the pattern would appear when the transparent sheet is folded at the dotted line.

A.
1
B.
2
C.
3
D.
4

RRB Group D Mock Test - 2 - Question 72

Which country has developed a new underwater surveillance network which will help its submarines to accurately track target vessels and will protect its interests in the Indian Ocean and South China Sea?

A.
China
B.
India
C.
Pakistan
D.
Srilanka

RRB Group D Mock Test - 2 - Question 73

In the visible spectrum, the colour having the shortest wavelength is

A.
Red
B.
Yellow
C.
Blue
D.
Violet

RRB Group D Mock Test - 2 - Question 74

F-lb is a/an

A.
Game
B.
Refrigerant
C.
Drug
D.
Aircraft

RRB Group D Mock Test - 2 - Question 75

Which of the following solvents is used for dry cleaning of clothes ?

A.
Chloroform
B.
Acetone
C.
Alcohol
D.
Carbon tetrachloride

RRB Group D Mock Test - 2 - Question 76

Fertility of soil can be improved by

A.
Adding dead earthworms
B.
Removing dead earthworms
C.
Adding living earthworms
D.
Removing living earthworms and adding dead earthworms

RRB Group D Mock Test - 2 - Question 77

Arrange the following electrical appliances in ascending order of power consumption :
1. Television
2. Fan
3. Electric iron
4. Tube light

A.
1, 2, 3, 4
B.
4, 2, 3, 1
C.
4, 1, 2, 3
D.
4, 3, 2, 1

RRB Group D Mock Test - 2 - Question 78

Decomposition of matter takes place due to the effect of :

A.
Bacteria
B.
Virus
C.
Fungi
D.
Algae

RRB Group D Mock Test - 2 - Question 79

A person borrows Rs. 5000 for 2 years at 4% p.a. simple interest. He immediately lends it to another person at 6.25% p.a. for 2 years. Find his gain in the transaction per year.

A.
Rs. 112.50
B.
Rs. 125
C.
Rs. 150
D.
Rs. 167.50

RRB Group D Mock Test - 2 - Question 80

When the leaves of a plant show chlorosis, is the possible causes can be :

A.
Increase in nitrate content in the soil
B.
Increase in chloride content in the soil
C.
Decrease in phosphorus content in the soil
D.
Deficiency of trace elements in the soil

RRB Group D Mock Test - 2 - Question 81

Simplify 9-8 ÷ 2 + 9 x 3 - 28/4

A.
20
B.
25
C.
30
D.
35

RRB Group D Mock Test - 2 - Question 82

If x = 7 - 4√3 , then the value of x + 1/x is

A.
3√3
B.
8√3
C.
14 + 8√3
D.
14

Detailed Solution for RRB Group D Mock Test - 2 - Question 82

x = 7 - 4√3

RRB Group D Mock Test - 2 - Question 83

What is the length of each stump in cricket?

A.
28 inches
B.
32 inches
C.
2 ft
D.
21/2 ft

RRB Group D Mock Test - 2 - Question 84

Name the player to become world’s highest ranked test bowler according to the latest MRF Tyres ICC Test Player Rankings

A.
Vernon Philander
B.
James Anderson
C.
Kagiso Rabada
D.
Josh Hazlewood

RRB Group D Mock Test - 2 - Question 85

Name the player to win the Men’s 10m Air Pistol Gold at the 61st National Shooting Championship (NSCC)?

A.
Yashwant Singh
B.
Shahzar Rizvi
C.
Omprakash Mitherwal
D.
Dharmendra Singh

RRB Group D Mock Test - 2 - Question 86

Below is given statement followed by three conclusions numbered I, II and III. You have to consider the statement and the following conclusions and decide which of the conclusions is follows in the statement :
Statements :a. Some tents are buildings.
b. Some buildings are chairs.
c. Some chairs are windows.
Conclusions:I. Some windows are buildings.
II. Some windows are tents.
III. Some chairs are tents.

A.
None follows
B.
if only I and II follow
C.
if only II and III follow
D.
if only I and III follow

RRB Group D Mock Test - 2 - Question 87

Navjivan express from Ahmedabad to Chennai leaves Ahmedabad at 6.30 a.m. and travels at 50 km/hr towards Baroda situated 100 km away. At 7.00 a.m. Howrah-Ahmedabad express leaves Baroda towards Ahmedabad and travels at 40 km/hr. At 7.30 a.m. Mr, shah, the traffice controller at Baroda realises that both the trains are running on the same track. How much time does he have to avert a head-on collision between the two trains?

A.
15 min
B.
20 min
C.
25 min
D.
30 min

RRB Group D Mock Test - 2 - Question 88

A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every third day?

A.
12 days
B.
15 days
C.
16 days
D.
18 days

RRB Group D Mock Test - 2 - Question 89

Below are the statements followed by four conclusions numbered I,II,III and IV. You have to consider the statements and the following conclusions and decide which of the conclusion(s) follows the statement(s).
Statements :
a. Some lions are goats.
b. Some goats are horses.
c. Some horses are flowers.
Conclusions :
I. Some lions are horses.
II. Some goats are flowers.
III. Some lions are flowers.
IV. Some horses are lions.

A.
None follows
B.
All follow
C.
only conclusion I follows
D.
only conclusion II follows

Detailed Solution for RRB Group D Mock Test - 2 - Question 89

Venn-diagram

All the three Premises are Particular Affirmative (I - type). Therefore, no conclusion follows from them.

RRB Group D Mock Test - 2 - Question 90

The value of cos 105^o+ sin 105^ois :

A.
1/2
B.
1
C.
√2
D.
1/√2

RRB Group D Mock Test - 2 - Question 91

If the areas of the three adjacent faces of a cuboidal box are 120 cm², 72 cm² and 60 cm² respectively, then find the volume of the box.

A.
720 cm³
B.
864 cm³
C.
7200 cm³
D.
(72)² cm³

Detailed Solution for RRB Group D Mock Test - 2 - Question 91

The sides of cuboidal box are √120 cm, √72 cm and √60 cm respectively.
The volume of a cuboidal box
= √120 x √72 x √60 cm³
= 719.9999
≅ 720 cm³