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# RRB Group D Mock Test - 20

## 100 Questions MCQ Test RRB (Group D) - Mock Tests & Previous Year Papers | RRB Group D Mock Test - 20

Description
This mock test of RRB Group D Mock Test - 20 for Railways helps you for every Railways entrance exam. This contains 100 Multiple Choice Questions for Railways RRB Group D Mock Test - 20 (mcq) to study with solutions a complete question bank. The solved questions answers in this RRB Group D Mock Test - 20 quiz give you a good mix of easy questions and tough questions. Railways students definitely take this RRB Group D Mock Test - 20 exercise for a better result in the exam. You can find other RRB Group D Mock Test - 20 extra questions, long questions & short questions for Railways on EduRev as well by searching above.
QUESTION: 1

### Namarata's father is now four times her age. In five yrs, he will be three times her age. In how many yrs, will he be twice her age?

Solution: Let Namrata's age = x years
Let Namrata's father's age = y years
∴ y = 4x and y + 5 = 3(x + 5)
∴ x = 10, y = 10
Let y + K = 2(x + K)
(i.e., After K years, the father will be double of her age)
⇒ 40 + K = 2(10 + K) ⇒ K = 20
∴ After 20 years, Namrata's father will be double of her age.
QUESTION: 2

Solution:
QUESTION: 3

### Which state has least densely populated state with 17 persons per square kilometer?

Solution:
QUESTION: 4

Diameter of two circular plates are respectively 18cm and 80 cm. The diameter of the plate which has an area equal to the combined area of two given plates is

Solution:

Combined area of two plates = π (9)2 + π (40)2
= π (81 + 1600)
= 1681 π cm2.
Let R be the Radius of plate, whose area is combined area of two plates.
Area of plate = πR2 = 1681 π
⇒ R2 = 1681
⇒ R = 41 cm.
Diameter = 2 x 41 = 82 cm

QUESTION: 5

If the mean of a, b, c is M and ab + bc + ca = 0, then the mean of a2, b2, c2 is :

Solution:

We have : (a + b + c) 3 = M or (a + b + c) = 3M
Now, (a + b + c) x  (a + b + c) = (3M)2 = 9M2
a2 + b2 + c2 + 2(ab + bc + ca) = 9M2
a2 + b2 + c2 = 9M2
Required mean = 9 M2 /3 = 3M2

QUESTION: 6
Pointing towards a girl, Divya says, "She is daughter of only son of my grandfather". How the girl is related to Divya?
Solution:
QUESTION: 7
'India 2020-A Vision for the New Millennium' is a new book which has attracted the reader's attention. Who wrote this book?
Solution:
QUESTION: 8
A boat running downstream covers a distance of 16 km in 2 hr while for covering the same distance upstream it takes 4 hr. What is the speed of the boat in still water?
Solution:
QUESTION: 9
Choose the analogous pair.
Scales : Justice
Solution:
QUESTION: 10
Choose the number which is different from others.
Solution:
QUESTION: 11
If 'gnr tag zog qmp' stands for 'Seoul Olympic Organising Committee'; hyto gnr emf' stands for 'summer Olympic games' and 'esm sdr hyto' stands for 'modern games history', what would be the code for 'summer' ?
Solution:
QUESTION: 12
Nosegay : Flowers : Flogs :: ?
Solution:
QUESTION: 13
What is the difference between the simple and the Compound Interest on Rs 400 for 2 yrs at 5% p.a?
Solution:
QUESTION: 14
When did the Russian Revolution take place ?
Solution:
QUESTION: 15
Which is the Currency of Kiribati?
Solution:
QUESTION: 16
What is the minimum number of colours required to fill the spaces in the given diagram without any two adjacent spaces having the same colour?
Solution:
QUESTION: 17
Which one of the pairs given below is NOT correctly matched?
Solution:
QUESTION: 18
Recently the HRD Ministry released the All India Survey on Higher Education (AISHE) for the year 2016-17. According to the survey, the number of students enrolling for higher education in India saw ____ percent increase in 2016-17
Solution:
QUESTION: 19
Under which article can the President suspend fundamental rights during emergency?
Solution:
QUESTION: 20
According to the latest census conducted by the Reserve Bank of India (RBI), which country emerged as the largest source of FDI in India in 2016-17?
Solution:
QUESTION: 21
Ms. Gaura Pant 'Shivani' who passed away recently was a famous
Solution:
QUESTION: 22
A man starts from a point 'X' and walks 3 km southwards, then he turns left and walks 6 km. In which direction is he from the starting point?
Solution: A man starts from X, walks 3 km south and reaches Y. At Y, he turns left, walks 6 km and reaches Z. It is clear from the figure that at Z the man is towards the south-east with respect to his starting position X
QUESTION: 23
A real-time operating system is most likely to be used for which of the following tasks
Solution:
QUESTION: 24
Consider the following statements about Internet facility:
I. It serves as the largest on-line information system.
II. It provides the most dependable and latest mode for sending E-mail.
III. Recurring expenditure on communicating E-mail is very high.
IV. It is often misused and has triggered cyber-crimes.
Which of these statements are correct?
Solution:
QUESTION: 25
Revealed preference theory was propounded by-
Solution:
QUESTION: 26
Ajanta-Ellora caves are situated near
Solution:
QUESTION: 27
The source of suns energy is the process of—
Solution:
QUESTION: 28
Ocean currents are caused by
Solution:
QUESTION: 29
The common source of entertainment during Ashoka's reign was
Solution:
QUESTION: 30
The break even point is where-
Solution:
QUESTION: 31
Which one of the following systems has maximum entropy?
Solution:
QUESTION: 32
Which of the following is not a Social reform introduced by Lord William Bentick
Solution:
QUESTION: 33
Which one of the following chambers of human heart receives the deoxygenated blood from the body?
Solution:
QUESTION: 34
When two ice cubes are pressed together, they join to form one cube. Which one of the following helps to hold them together?
Solution:
QUESTION: 35
Which one of the following phenomena cannot be attributed to the refraction of light?
Solution:
QUESTION: 36
Assertion [A] : "DNA Finger printing" has become a powerful tool to establish patemity and identity of criminals in rape and assault cases.
Reason [R] : Trace evidences such as hairs, saliva and dried semen are adequate for DNA analysis.
Solution:
QUESTION: 37
The changing composition of the export trade is indicative of structural transformation of Indian economy in favour of modernisation. The best indicator of this trend is the :
Solution:
QUESTION: 38
Which one of the following statements is not correct?
Solution:
QUESTION: 39
"By weaving threads of physics, chemistry and biology into a rich tapestry, this remarkable scientist provided a unifying molecular view of the world. He touted the wounderful properties of Vitamin C first as a cure of common cold and later as a preventive agent against cancer." One of science's major figures of all time referred to above is
Solution:
QUESTION: 40
"Metastasis" is the process by which
Solution:
QUESTION: 41
The characteristic odour of garlic is due to
Solution:
QUESTION: 42
Which of the following cell organelles play the most significant role in protein synthesis?
Solution:
QUESTION: 43
One Astronomical Unit is the average distance between
Solution:
QUESTION: 44
A triangle, no two of whose sides are equal, is called a
Solution:
QUESTION: 45
In line with United States, which among the given countries has also filed a notice to withdraw its membership from the United Nations Educational, Scientific and Cultural Organization (UNESCO)?
Solution:
QUESTION: 46

Find the missing character. Solution:

In fig. (A), (3 x 3) + (6 x 5)  = 39.
In fig. (B), (4 x 4) + (5 x 7)   = 51.
∴ In fig. (C), missing number = (3 x 4)   + (5 x 5)   = 37.

QUESTION: 47
Totally how many member countries are there in United Nations Security Council?
Solution:
QUESTION: 48
Who developed the telegraphic code?
Solution:
QUESTION: 49
What will come in place of question mark (?) in the following series.
KDW, MGT, OJQ, ?
Solution:
QUESTION: 50
Arrange the following in a meaningful order:
2. Composing
3. Writing
4. Printing
Solution:
QUESTION: 51
In the given diagram, Circle A represents teachers who can teach physics, Circle B represents teachers who can teach chemistry and Circle C represents those who can teach Mathematics. Among the region marked p, q, r, .....

The one which represents teachers who can teach physics and mathematics but not chemistry, is
Solution:
QUESTION: 52

If '×' means '÷', '÷' means '+', '+' means '-' and '-' means '×', then 2 - 50 + 40 × 10 ÷ 96 = ?

Solution:

2 × 50 - 40 ÷ 10 + 96
= 100 - 40 ÷ 10 + 96
= 100 - 4 + 96
= 196 - 4 = 192

QUESTION: 53
How many such pairs of letters are there in the word ATMOSPHERE which have as many letters between them in the word as in the English alphabet?
Solution:
QUESTION: 54
A mixture of 40 litres of milk and water contains 10% of water. How much water must be added to make the water 20% in the new mixtures.
Solution:
QUESTION: 55
India’s first National Park for differently abled people has been inaugurated in which state?
Solution:
QUESTION: 56
Name the state which has imposed complete ban on electronic cigarettes in the state with a jail term of up to 3 years on its violation
Solution:
QUESTION: 57
In the set of three-digit numbers given below, first two digits of each number are interchanged. Which one among them will be in the middle if they are arranged in ascending order after the change?
230 422 328 516 138
Solution: 230 422 328 516 138
After Interchanging first two digits of each number
032, 224, 823, 615, 831
Arranging in ascending order
032, 224, 615, 823, 831
⇒ 615 is in the middle
QUESTION: 58
Which of the following numbers is a multiple of 11?
Solution:
QUESTION: 59

M, P and Q jointly thought of engaging themselves in a business venture. It was agreed that M would invest Rs 6500 for 6 months, P Rs 8400 for 5 months and Q Rs 10,000 for 3 months. M was to be the working member of the group for which he was to receives 5% of the profits. The profit earned was Rs 7030.Calculate the share of Q in the profit.

Solution:

M, P, Q share the remaining profit of Rs 7,030 in the ratio 6500 x 6 : 8400 x 5 : 10000 x 3
i.e., 13 : 14 : 10
∴ Q's share = 14/37 x 7030 = Rs 2,660

QUESTION: 60
In a class of 40 students and 5 teachers, each student got sweets that are 15% of the total number of students and each teacher got sweets that are 20% of the total number of students. How many sweets were there?
Solution:
QUESTION: 61
The actor-director Ananta Ojha died recently. He was veteran actor of which language?
Solution:
QUESTION: 62
To which Profession does Ananta Ojha belongs to?
Solution:
QUESTION: 63
A pipe can fill a cistern in 6 hrs. Due to a leak in its bottom, it is filled in 7 hrs. When the cistern is full, in how much time will it be emptied by the leak?
Solution:
QUESTION: 64
An express train runs at an average speed of 100 kmph, stopping for 3 minutes after 75 km. A local train runs at a speed of 50 kmph, stopping for 1 minute after every 25 km. If the train began running at the same time, how many km did the local train run in the time it took the express train to run 600 km?
Solution: While running for 600 km, the Express Train stopped 7 times, i.e. for 21 minute (3 minute each time)
Running time = 6 hours (@ 100 km/hr for 600 km).
∴ Total time taken by the express train = 6 hours 21 minutes
Now local train moves @ 50 km per hour, stops for one minute after every 25 km, i.e. after every half an hour.
∴ Local train's stopage time = 12 minutes
Tunning Time = 6 hours 9 minutes
In 6 hours 9 minutes, the local train will cover the distance of 307.5 km.
QUESTION: 65
Find out from amongst the four alternatives as to how the pattern would appear when the transparent sheet is folded at the dotted line.
Solution:
QUESTION: 66
In a queue, Amrita is 10th from the front while Mukul is 25th from behind and Mamta is just in the middle of the two. If there be 50 persons in the queue, what position does Mamta occupy from the front ?
Solution: Number of persons between Amrita and Mukul = 50 - (10 + 25) = 15.
Since Mamta lies in middle of these 15 persons
So Mamta`s position is 8th from Amrita i.e. 18th from the front.
QUESTION: 67

A sum of money is divided among 160 males and some females in the ratio 16:21. Individually each male gets Rs 4 and a female Rs 3. The number of females is

Solution:

Let number of females = F
Suppose 160 males get Rs 16k and F females get Rs 21k
∴ 160 x 4 = 16k
⇒ k = 40
∴ F females get Rs 840
∴ Number of females = 840/3 = 280

QUESTION: 68
Indian Navy has signed a Memorandum of Understanding (MoU) with which Port Trust, for increasing the berthing capacity of naval ships in the port?
Solution:
QUESTION: 69
Which Sikh Guru was born at Patna?
Solution:
QUESTION: 70
Fertility of soil can be improved by
Solution:
QUESTION: 71
When a vehicle passes, TV reception gets distorted. This is because
Solution:
QUESTION: 72
Arrange the three forms of iron in descending order of carbon contents and other impurities in them :
I. Wrought iron
II. Cast iron
III. Pig iron
Solution:
QUESTION: 73
The American scientists have discovered new secrets about the milky way, we call galaxy. The secrets are :
Solution:
QUESTION: 74
The gas which helps in burning is :
Solution:
QUESTION: 75
The International Space Station jointly promoted by 16 nations, would cost Pound Sterling 1 million and would be completed by :
Solution:
QUESTION: 76
Internet operations could transmit :
Solution:
QUESTION: 77
An amount of money fetches simple interest of Rs 4,320 at the rate of 4% pa at the end of 6 yrs. What is the principal amount?
Solution:
QUESTION: 78 Solution: QUESTION: 79

5004 ÷ 139 - 6 = ?

Solution:

5004 ÷ 139 - 6 = ?
⇒ 36 - 6 = 30

QUESTION: 80
The term 'Tee' is connected with
Solution:
QUESTION: 81
Which Indian state has signed the Host City Contract with the Indian Olympic Association (IOA) to host the 39th National Games in 2022?
Solution:
QUESTION: 82
Name the player to clinch the gold medal in 48 kg category at the National Women’s Boxing Championships held in Rohtak, Haryana
Solution:
QUESTION: 83
Below is given statement followed by two conclusions numbered I and II. You have to consider the statement and the following conclusions and decide which of the conclusions is follows in the statement :
Statement :
Company 'X' had asked its employees to declare their income and assets but it has been strongly opposed by employees union and no employee is going to declare his income.
Conclusions :
I. The employees of the company X do not seem to have any additional income besides their salary.
II. The employees union wants all senior officers to declare their income first.
Solution:
QUESTION: 84

A train can travel 50% faster than a car. Both start from point A at the same time and reach point B 75 kms away from A at the same time. On the way, however, the train lost about 12.5 minutes while stopping at the stations. The speed of the car is :

Solution:

Let speed of the car be x kmph.
Then, speed of the train = 150/100 x = 3/2 x kmph. QUESTION: 85

Sakshi can do a piece of work in 20 days. Tanya is 25% more efficient than Sakshi. The number of days taken by Tanya to do the same piece of work is :

Solution:

Let say Sakshi's efficiency is 100 and Tanya's is 125
⇒ 20 x 100 = 125 x Days
⇒ Days = 20 x 100 /125
⇒ Days = 16 days

QUESTION: 86

If A+B+C=180o, then [(tanA+tanB+tanC)/(tanA tanB tanC)]=

Solution:
QUESTION: 87
The capacity of a cylindrical tank is 246.4 litres. If the height is 4 metres, what is the diameter of the base?
Solution:
QUESTION: 88
How many meaningful word is possible with the second, the fifth, the tenth and the twelfth letters of the word 'METROPOLITAN'? If no such word can be made, give X as the answer and if more than one such word can be made, given M as the answer.
Solution: The second, fifth, tenth and twelfth letters of the word METROPOLITAN are E, O, T and N respectively. The words formed are NOTE and TONE.
QUESTION: 89
The headquarters of the International Red Cross is situated in
Solution:
QUESTION: 90
A shopkeeper sold sarees at Rs.266 each after giving 5% discount on labelled price. Had he not given the discount, he would have earned a profit of 12% on the cost price. What was the cost price of each saree?
Solution:
QUESTION: 91

Each of the following questions consists of two sets of figures. Figures 1,2,3 and 4 constitute the Problem Set while figures A,B,C,D and E constitute the Answer Set. There is a definite relationship between figures 1 and 2. Establish a similar relationship between figures 3 and 4 by selecting a suitable figure from the Answer Set . Solution:
QUESTION: 92

In the following problem, out of the five figures marked 1234 and 5, four are similar in a certain manner. However, one figure is not like the other four. Choose the figure which is different from the rest. Solution:
QUESTION: 93

In the following questions, select a figure from amongst the four alternatives, which when placed in the blank space of fig. (X) would complete the pattern. Solution:
QUESTION: 94

(i) Seven members A, B, C, D, E, F and G are sitting in a circle and are facing the centre.
(ii) G is third to the left of A.
(iii) F is third to the left of B.
(iv) D is not the neighbour of G.
(v) C is the neighbour of A.
(vi) B is to the immediate left of A.

Q. What is the position of E?

Solution: QUESTION: 95

Which number is on the face opposite to 1? Solution:
QUESTION: 96

In each of the following questions, choose that set of numbers from the four alternative sets, that is similar to the given set.

Q. Given set : (91, 77, 143)

Solution: QUESTION: 97

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 books are pens.
b. Some pens are watches.

Conclusions :
III. Some watches are books.
IV. Some books are watches.

Solution:
QUESTION: 98

The following table shows the courier charges for sending 1 kg parcel from one city to another. Study the table crefully and answer the questions that follows. Q. Among the following, the charges will be the least for sending parcel from :

Solution:
QUESTION: 99

The following table shows the courier charges for sending 1 kg parcel from one city to another. Study the table crefully and answer the questions that follows. Q. For sending parcel from the city C, the least charges will befor city

Solution:
QUESTION: 100

The following table shows the courier charges for sending 1 kg parcel from one city to another. Study the table crefully and answer the questions that follows. Q. For which one of the following will the charges be different from the other three ?

Solution: