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# RRB Group D Mock Test - 4

## 100 Questions MCQ Test RRB (Group D) - Mock Tests & Previous Year Papers | RRB Group D Mock Test - 4

Description
This mock test of RRB Group D Mock Test - 4 for Railways helps you for every Railways entrance exam. This contains 100 Multiple Choice Questions for Railways RRB Group D Mock Test - 4 (mcq) to study with solutions a complete question bank. The solved questions answers in this RRB Group D Mock Test - 4 quiz give you a good mix of easy questions and tough questions. Railways students definitely take this RRB Group D Mock Test - 4 exercise for a better result in the exam. You can find other RRB Group D Mock Test - 4 extra questions, long questions & short questions for Railways on EduRev as well by searching above.
QUESTION: 1

### A is two years older than b who is twice as old as C. If the total of the ages of A, B and C be 27, then how old is B?

Solution: Let C's age be x years
Then, B's age = 2x years
A's age = (2x + 2) years
∴ (2x + 2) + 2x + x = 27
⇒ 5x = 25
⇒ x = 5
Hence B's age = 2x = 10 years
QUESTION: 2

### Which one of the following pairs of equations has a unique solution?

Solution:

Given two equations   QUESTION: 3

### One side of a right triangle measures 12 cm and the difference between the hypotenuse and the other side is 8 cm. The area of the triangle is

Solution:

Let the hypotenuse = x cm
Then the other side is (x - 8) cm
By Pythagoras theorem
(x - 8)2 + (12)2 = x2
⇒ x2 + 64 - 16x + 144 = x2
⇒ -16x = -208
⇒ x = 208/16 = 13 cm
∴ Hypotenuse = 13cm
so the other side = (13 - 8) = 5cm
Area = 1/2 x 12 x 5
= 30cm2

QUESTION: 4
The average weight of three men A,B and C is 84 kg. D joins them and the average weight of the four becomes 80 kg. If E, whose weight is 3 kg more than that of D,replaces A,the average weight of B,C,D and E becomes 79 kg. The weight of A is
Solution:
QUESTION: 5
Who wrote 'Vaishnav Jan te.....'?
Solution:
QUESTION: 6

A motor boat whose speed is 15 km/hr in still water goes 30 km downstream and comes back in 4 hrs and and 30 minutes. Determine the speed of the stream.

Solution:

Let x km/hr be the speed of water
The speed of motor boat in still water is 15 km/hr, therefore, its speed downstream is (15 + x) km/hr and the speed upstream is (15 - x) km/hr
Time taken for given 30 km downstream = 30/15 + x hours
Time taken for going 30 km upstream = 30/15 - x hours
Since the total time is given to be 4 hours 30 minutes or 1800 = 9(225 - x2)
or 200 - 225 + x2 = 0
or x2 = 25
⇒ x = 5, - 5
∴ x = 5 [as x cannot be negative so x = -5 is rejected]
Hence the speed of water = 5 km/hr

QUESTION: 7
A is the father of C. But C is not his son.
E is the daughter of C. F is the spouse of A.
B is the brother of C. D is the son of B.
G is the spouse of B. H is the father of G.
Who is the Grand mother of D?
Solution:
QUESTION: 8
Which one of the following statements is correct on the basis of Census-2001 ?
Solution:
QUESTION: 9
Choose the analogous pair.
Pedant : Erudition
Solution:
QUESTION: 10
Choose the numeral pair which is different from others .
Solution: This is the only pair in which the second number is twice the first one
QUESTION: 11
If 'nitco sco tingo' stands for 'softer than flower'; 'tingo rho mst' stands for 'sweet flower fragrance' and 'mst sco tmp' stands for 'sweet than smile', what would 'fragrance' stand for ?
Solution:
QUESTION: 12
Complete the analogous pair.
Calf : Cow : : Puppy : ?
Solution:
QUESTION: 13

The compound interest on Rs 10000 in 2 years at 4% per annum, the interest being compounded half-yearly, is

Solution:

P = 10,000
T = 2 years
R = 4% (compounded half yearly)
⇒ R% = 2 + 2 + 4/100 = 4 + 0.04
⇒ R% = 4.04%
⇒ CI = P[1 + R/100 ]T - P
⇒ CI = 10000 [1 + 4.04/100 ]2 - 10000
⇒ CI = (104.04)2 - 10000
⇒ CI = 10824.3216 - 10000
⇒ CI = Rs 824.3216

QUESTION: 14
The main cause of the punic wars was :
Solution:
QUESTION: 15
How many rectangles are there in the figure below?
Solution: The figure in question has been labelled as under:

It is clear from the diagram above that there are eight rectangles namely
AEFM, EGHF, AGHM, GBLK, KLCN, GBCN, MHND, ABCD
QUESTION: 16
What is China's currency called?
Solution:
QUESTION: 17
Who is the author of the book 'A Foreign Policy of India'?
Solution:
QUESTION: 18
The Nehru-Liaquat Pact between India and Pakistan was signed in 1950 to resolve the issue of:
Solution:
QUESTION: 19
Soni travelled 9 km to the west, then turned right and travelled 7 km, then turned left and travelled 8 km, then turned back and travelled 11km, then turned right and travelled 7 km. How far is he from the starting point?
Solution:
QUESTION: 20
Four positions of a dice are shown below. What number must be at the bottom face when the dice is in the position as shown in fig. (III)?
Solution: From figure (I), (II), (IV) we conclude that 5, 6, 1 and 2 lie adjacent to 4.
Hence, 3 must lie opposite 4 and vice-versa. In fig. (III), 3 is at the top and consequently 4 must lie at the bottom face.
QUESTION: 21
According to the latest statistics of the government, what percent of growth rate has been registered by the banking sector in December 2017 post Centre’s PSB recapitalisation plan?
Solution:
QUESTION: 22
Who was appointed the Managing Director (MD) and CEO of National Payments Corporation of India (NPCI)?
Solution:
QUESTION: 23
Who is known as Indian Bismarck?
Solution:
QUESTION: 24
'Kanchipuram' is in which of the following states?
Solution:
QUESTION: 25
What are the two main parts of the computers required to be present essentially?
Solution:
QUESTION: 26
Which of the following is a national net work
Solution:
QUESTION: 27
GDP at factor cost is-
Solution:
QUESTION: 28
National Income is the :
Solution:
QUESTION: 29
The minor form of condensation near the surface that forms a mass is :
Solution:
QUESTION: 30
Indicate the wrong combination :
Solution:
QUESTION: 31
The Indian civil Service was started during the tenure of
Solution:
QUESTION: 32
In ancient India historical geography, the name 'Ratnakara' denoted
Solution:
QUESTION: 33
Which one of the following species is obtained from flower buds?
Solution:
QUESTION: 34
Which one of the following is Bragg's equation used for the study of crystals?
Solution:
QUESTION: 35
Which one of the follwing is not an official language of the United Nations?
Solution:
QUESTION: 36
Which of the following is used for writing on glass?
Solution:
QUESTION: 37
Which one of the following organisms can serve as a biofertilizer for rice crop?
Solution:
QUESTION: 38
Which one of the following is in the correct sequential order in which these appeared under simulated primitive earth conditon?
Solution:
QUESTION: 39
Consider the figure of a fountain with four holes given below:

Which one of the holes in the fountain will throw the water farthest?
Solution:
QUESTION: 40
Barium in a suitable form is administered to patients before an X-ray examination of the stomach, because
Solution:
QUESTION: 41
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: 42

The acceleration due to gravity of a catastropic earthquake will be

Solution:
QUESTION: 43
With reference to the latest developments in stem cell research, consider the following statements :
1. The only source of human stem cells are the embryos at blastocyst stage.
2. The stem cells can be derived without causing destruction to blastocysts.
3. The stem cells can regenerate themselves in vitro virtually forever.
4. Indian research centres also created a few cell lines which can be developed into many types of tissues.
Which of these statements are correct?
Solution:
QUESTION: 44
Which of the following would lead to amlnutrition?
1. Overnutrition
2. Undernutrition
3. Imbalanced nutrition
Select the correct answer by using the codes given below:
Solution:
QUESTION: 45
A rectangular box is open on one side. The number of pairs of parallel planes of such a box is :
Solution:
QUESTION: 46
The UNESCO has recently included the “bird language”, prevalent in which country, in its list of Intangible Cultural Heritage citing it as an endangered part of world heritage?
Solution:
QUESTION: 47
Find the missing character.
Solution: Clearly, the number inside the circle is equal to the sum of the product of the upper three numbers and the product of the lower three numbers. Thus,ans is 130
QUESTION: 48

Nawab Sanaullah Zehri, recently resigned before a no-confidence motion was taken against him in the provincial assembly. He belonged to which province of Pakistan?

Solution:
QUESTION: 49
Laparoscopy is connected with
Solution:
QUESTION: 50

How many such pairs of letters are there in the word MODERATE each of which has as many letters between them in the word as in the English alphabet?

Solution:

There are 4 pairs in the word 'MODERATE' i.e.
(1) O and R - 2 letters between them - D,E
In the alphabat series also there are 2 letters between O and R i.e. P,Q
(2) D and A - 2 letters between them - E, R
In the alphabat series there are 2 letters between D and A i.e. C,B
(3) O and T - 4 letters between them - DERA
In the alphabat series there are 4 letters between O and T i.e. P,Q, R, S
(4) R and T - 1 letters between them - A
In the alphabat series there are 1 letter between R and T i.e. S
So the CORRECT ANSWER is More than 3 i.e. (E)

QUESTION: 51

What should come in the place of question - mark (?) in the following series?
YA, CW, ?, GS, QI

Solution: QUESTION: 52
Arrange the words given below in a meaningful sequence.
1. Post-box 2. Letter 3. Envelope 4. Delivery 5. Clearance
Solution:
QUESTION: 53

If + means x, ÷ means -, x means ÷ and - means +
what will be the value of 4 + 11 ÷ 5 - 55 = ?

Solution:

Given expression : = 4 x 11 - 5 + 55 = 44 - 5 + 55 = 94

QUESTION: 54
In a mixture of 60 litres, the ratio of milk and water is 2:1. If the ratio of milk and water is to be 1:2, then the amount of water to be further added must be
Solution:
QUESTION: 55
Union Home Ministry has declared which state as “disturbed area” for six more months (till June 2018) under Armed Forces (Special Powers) Act – AFSPA?
Solution:
QUESTION: 56
Which among the following states has become the second north eastern state after Sikkim to be declared Open Defecation Free?
Solution:
QUESTION: 57
Complete the analogous pair.
64 : 8 :: 16 : 4 :: ? : 2
Solution:
QUESTION: 58
What will come in place of question mark (?) in the following series.
33, 28, 24, ?, 19, 18
Solution:
QUESTION: 59

Two numbers x and y(x>y) are such that their sum is equal to three times their difference. Then the value of 3xy/2(x- y2) will be

Solution:
QUESTION: 60
Atul and Babita enter into a business partnership in which Atul contributes Rs 2000 for 9 months and Babita contributes Rs 5000 for 7 months. A profit of Rs 1100 will be divided between Atul and Babita in the ratio of
Solution:
QUESTION: 61
60% of the students in a school are boys.If the number of girls in the school is 300,then the number of boys is
Solution:
QUESTION: 62
Who has been sworn in as the Deputy National Security Adviser (NSA) by the Union Government?
Solution:
QUESTION: 63
The ‘Karnataka International Travel Expo’ (KITE), considered the “largest” B2B travel event in India, will be held in which city of Karnataka?
Solution:
QUESTION: 64
If 15 pumps of equal capacity can fill a tank in 7 days. Then how many extra pumps will be required to fill the tank in 5 days?
Solution:
QUESTION: 65
A train 132 m long passes a telegraph pole in 6 secs. Find the speed of the train.
Solution:
QUESTION: 66
Profit after selling a commodity for Rs 425 is same as loss after selling it for Rs 355,the cost of the commodity is:
Solution:
QUESTION: 67
In a row of trees, one tree is fifth from either end of the row. How many trees are there in the row ?
Solution: number of trees in the row = ( 4 + 1 + 4 ) = 9.
QUESTION: 68

A bag contain Rs 102 in the form of rupee, 50-paise and 10-paise coins in the ratio 3:4:10. The number of 10-paise coins is

Solution: ⇒ 300x + 200x + 100x = 102 x 100
⇒ 600x = 1020 x 10
⇒ x = 17
Hence, number of 10 paisa coins are = 10(17) = 170 coins

QUESTION: 69
At which of the following places did Gautam Budha attain Nirvana?
Solution:
QUESTION: 70
Which space agency, has announced that it would launch two missions – GOLD and ICON – during 2018 to explore the little-understood area of 96 km above Earth’s surface?
Solution:
QUESTION: 71
When a vehicle passes, TV reception gets distorted. This is because
Solution:
QUESTION: 72
A fuse wire is used for :
Solution:
QUESTION: 73
Which of the following statements regarding cellulose are correct ? (1) It is a naturally occurring organic substance found in plants (2) It is used for making rayon (3) It consists of long unbranched chain of glucose units
Solution:
QUESTION: 74
Solution:
QUESTION: 75
Which of the following machines will fail to give satisfactory result in vacuum ?
Solution:
QUESTION: 76
Food remains unspoilt in a refrigerator for a longer time because
Solution:
QUESTION: 77
Sleeping under a tree at night is dangerous since :
Solution:
QUESTION: 78

A sum of money lent out at simple interests amounts to Rs. 720 after 2 years and to Rs. 1020 after a further period of 5 years. The sum is :

Solution:

Principal + SI for 2 years = 720 Rs. ……(I)
Principal + SI for 7 years = 1020 Rs. ……(II)
Subtracting equation (I) from (II),
S.I. for 5 years = (1020 – 720) = 300 Rs.
∴ S.I. for 2 years = 300 x 2/5 = 120 Rs
∴ Principal = (720 – 120) = 600 Rs.

QUESTION: 79
83% of 621 = ?
Solution:
QUESTION: 80

If pxq = p+q+(p/q), then the value of 8x2 is

Solution:
QUESTION: 81
For which sport is the Val Barker Cup awarded in the Olympic Games?
Solution:
QUESTION: 82
Name the player to win the Men’s 10m Air Pistol Gold at the 61st National Shooting Championship (NSCC)?
Solution:
QUESTION: 83
Which country hosted the Hopman Cup 2018?
Solution:
QUESTION: 84
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 :
Some infrastructure in transportation was made by the British in India but its aim was to facilitate trade to their advantage.
Conclusions :
I. Foreign rule is always exploitative.
II. Transport infra-structure is necessary to facilitate trade.
Solution:
QUESTION: 85
A car covers 420 km with a constant speed. If its speed were 10 km/hr more, it would have taken one hour less to cover the distance. The speed of the car is
Solution:
QUESTION: 86

A alone can do a piece of work in 6 days and B alone in 8 days. A and B undertook to do it for Rs. 3200. With the help of C, they completed the work in 3 days. How much is to be paid to C?

Solution:

C's 1 day's work A's wages : B's wages : C's wages ∴ C's share (for 3 days) = QUESTION: 87
The maximum value of sin θ cos θ is
Solution:
QUESTION: 88

What is the total surface area of a right circular cone of height 14 cm and base radius 7 cm?

Solution:
QUESTION: 89
Choose one word which cannot be made from the letters of the given word.
EXAMINATION
Solution:
QUESTION: 90
Which organ of the United Nations has ceased to be operational?
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 1, 2, 3, 4 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

P,Q,R,S,T,V,W and Z are sitting around a circle facing the center. R is second to the left of Z who is third to the left of P. T is third to the right of W who is not an immediate neighbour of either R or Z. S is fourth to the right of Z. Q is fourth to the right of T.

Q. In which of the following pairs is the first person sitting to the immediate left of the second person?

Solution:

The seating arrangement is as follows : QUESTION: 95

Study the following diagram. Q. Which number in the above figure denotes Vegetarian Females who are not Teachers.

Solution:
QUESTION: 96

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: 97

Below are the statements followed by two conclusions numbered I and II. You have to consider the statements and the following conclusions and decide which of the conclusion(s) follows the statement(s).

Statements :
a. All books are ledgers.
b. All pens are keys.

Conclusions :
I. Some ledgers are keys.
II. Some keys are books.

Solution: QUESTION: 98 Above tables shows the marks obtained by 6 students in 6 different subjects. Observe the table carefully and answer the questions.

Q. What is the percentage difference between the marks gained by the student A in History and C in Hindi?

Solution:

Required % = 90% - 50% = 40%

QUESTION: 99 Above tables shows the marks obtained by 6 students in 6 different subjects. Observe the table carefully and answer the questions.

Q. The marks obtained by B in Mathematics is how many times the percentage of marks obtained by F in Science?

Solution: Hence % of B in Maths is equal to 0.875 times of % of F in science.

QUESTION: 100 Above tables shows the marks obtained by 6 students in 6 different subjects. Observe the table carefully and answer the questions.

Q.  For D what is the difference between the percentage of marks in English and the average percentage of marks in all the subjects?

Solution: 