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RRB Group D Mock Test - 12 - Railways MCQ


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30 Questions MCQ Test - RRB Group D Mock Test - 12

RRB Group D Mock Test - 12 for Railways 2024 is part of Railways preparation. The RRB Group D Mock Test - 12 questions and answers have been prepared according to the Railways exam syllabus.The RRB Group D Mock Test - 12 MCQs are made for Railways 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for RRB Group D Mock Test - 12 below.
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RRB Group D Mock Test - 12 - Question 1

A father is 3 yrs more than thrice the age of his son. Three yrs later, the father will be 10 yrs more than twice the age of his son. The ratio of their ages is

Detailed Solution for RRB Group D Mock Test - 12 - Question 1

Let present age of the son = x.
Ten present age of the father = 3x + 3
After three years, age of the son = (x+3) and age of the father = (3x+3+3) = (3x+6)
Given that (3x+6) = 10 + 2(x+3)
⇒ 3x + 6 = 10 + 2x + 6
⇒ x = 10
Present age of the father = 3x+3 = 3x10 + 3 = 33
ratio = 33 : 10

RRB Group D Mock Test - 12 - Question 2

The values of x and y satisfying the given equations ax + by = 2 and abxy = 1 are respectively

Detailed Solution for RRB Group D Mock Test - 12 - Question 2
Since x = a-1 and
y = b-1
Satisfied both the equation ax + by = 2
abxy = 1
ax + by = a.a-1 + b.b-1 = 1 + 1 = 2
abxy = aba-1b-1 = 1
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RRB Group D Mock Test - 12 - Question 3

Which state has the lowest population growth rate?

RRB Group D Mock Test - 12 - Question 4

The wheel of a scooter has a diameter of 70 cm. The number revolution it must make to maintain a speed of 33 km/hour is

Detailed Solution for RRB Group D Mock Test - 12 - Question 4

The distance covered by the wheel in one m = 33 x 1000 x 100/60 = 55000
The distance covered by the wheel in one revolution
= The circumference of the wheel = 2πr
= 2 x 22/7 x 70/2 = 220cm
∴ Number of revolutions of the wheel = 55000/220 = 250

RRB Group D Mock Test - 12 - Question 5

The average of five numbers is 27. If one number is excluded, the average becomes 25. The excluded number is :

Detailed Solution for RRB Group D Mock Test - 12 - Question 5

Average of 5 numbers = 27
∴ Sum of 5 numbers = 27 x 5 = 135
Given one number is excluded and average of remaining 4 numbers = 25
∴ Sum of remaining 4 numbers = 25 x 4 = 100
∴ Excluded Number = 135 - 100 = 35

RRB Group D Mock Test - 12 - Question 6
Who among the following was the author of 'Ashtadhyayi'?
RRB Group D Mock Test - 12 - Question 7
Pointing to a photograph a woman said, "She is the only daughter of my mother's father". How is the woman related to the person in the photograph?
RRB Group D Mock Test - 12 - Question 8
A river is flowing at a speed of 5 km/hr in a particular direction. A man, who can swim at a speed of 20 km/hr in still water, Starts swimming along the direction of flow of the river from point A and reaches another point B which is at a distance of 30 km from the starting point A. On reaching point B, the man turns back and starts swimming against the direction of flow of the river and stops after reaching point A. The total time taken by the man to complete his journey is
RRB Group D Mock Test - 12 - Question 9

Choose the analogous pair.
Subpoena : Witness

Detailed Solution for RRB Group D Mock Test - 12 - Question 9

Subpoena : Witness :: Elect : Officer

Explanation:

  • A subpoena is a legal document that commands a witness to appear in court.
  • Similarly, to elect is to select or appoint an officer to a position through voting.

Thus, the correct option is:

C: Elect : Officer

RRB Group D Mock Test - 12 - Question 10
Choose the word which is least like the other words in the group .
RRB Group D Mock Test - 12 - Question 11
In a coding system PEN is written as NZO and BARK as DTSL. How can we write PRANK in that system ?
RRB Group D Mock Test - 12 - Question 12
Complete the analogous pair.
Robert Hooks : Robert Brown : : Cells : ?
RRB Group D Mock Test - 12 - Question 13

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:

Detailed Solution for RRB Group D Mock Test - 12 - Question 13

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

RRB Group D Mock Test - 12 - Question 14
Find the number of triangles in the given figure.
RRB Group D Mock Test - 12 - Question 15
Which two countries are connected by underwater tunnel recently constructed?
RRB Group D Mock Test - 12 - Question 16
Which country's currency code is AUD?
RRB Group D Mock Test - 12 - Question 17
Three position of a dice are shown below

Which number is opposite to 6?
RRB Group D Mock Test - 12 - Question 18
Who is the author of the book 'A Foreign Policy of India'?
RRB Group D Mock Test - 12 - Question 19
Apart from India, which one of the following countries celebrates its Independence Day on the same day, August 15?
RRB Group D Mock Test - 12 - Question 20
A man travels 3 kms to the West, turns left and goes 3 kms, turns right and goes 1 km, again turns right and goes 3 kms. How far is he from the starting point?
RRB Group D Mock Test - 12 - Question 21
The Reserve Bank of India (RBI) has recently unveiled new Rs 10 denomination banknote under the Mahatma Gandhi (New) Series. The new note has the motif of______
RRB Group D Mock Test - 12 - Question 22
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?
RRB Group D Mock Test - 12 - Question 23
'Indian cotton merchant; banker ; Congressman and a close associate of Mahatma Gandhi'. This description fits
RRB Group D Mock Test - 12 - Question 24
The first Indian University was opened in 1857 was in
RRB Group D Mock Test - 12 - Question 25
MICR stands for
RRB Group D Mock Test - 12 - Question 26
Thrashing is caused by
RRB Group D Mock Test - 12 - Question 27
Which of the following is the leading export item among Indian Plantaion Crops?
RRB Group D Mock Test - 12 - Question 28
National Sample Survey (NSS) was established in—
RRB Group D Mock Test - 12 - Question 29
Jawaharlal Nehru Port is a satellite port of -
RRB Group D Mock Test - 12 - Question 30
The Treaty of Alinagar was concluded between
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