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RRB Group D / RPF Constable Exam  >  RRB Group D / RPF Constable Tests  >  RRB (Group D) Mock Tests & Previous Year Papers 2025  >  RRB Group D Mock Test - 20 - RRB Group D / RPF Constable MCQ

RRB Group D Mock Test - 20 - RRB Group D / RPF Constable MCQ


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30 Questions MCQ Test RRB (Group D) Mock Tests & Previous Year Papers 2025 - RRB Group D Mock Test - 20

RRB Group D Mock Test - 20 for RRB Group D / RPF Constable 2024 is part of RRB (Group D) Mock Tests & Previous Year Papers 2025 preparation. The RRB Group D Mock Test - 20 questions and answers have been prepared according to the RRB Group D / RPF Constable exam syllabus.The RRB Group D Mock Test - 20 MCQs are made for RRB Group D / RPF Constable 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for RRB Group D Mock Test - 20 below.
Solutions of RRB Group D Mock Test - 20 questions in English are available as part of our RRB (Group D) Mock Tests & Previous Year Papers 2025 for RRB Group D / RPF Constable & RRB Group D Mock Test - 20 solutions in Hindi for RRB (Group D) Mock Tests & Previous Year Papers 2025 course. Download more important topics, notes, lectures and mock test series for RRB Group D / RPF Constable Exam by signing up for free. Attempt RRB Group D Mock Test - 20 | 100 questions in 90 minutes | Mock test for RRB Group D / RPF Constable preparation | Free important questions MCQ to study RRB (Group D) Mock Tests & Previous Year Papers 2025 for RRB Group D / RPF Constable Exam | Download free PDF with solutions
RRB Group D Mock Test - 20 - Question 1
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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?

Detailed Solution for RRB Group D Mock Test - 20 - Question 1
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.
RRB Group D Mock Test - 20 - Question 2
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If the sum and the difference of two expression is 5x2-x-4 and x2+9x-10 respectively,then the expressions are

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RRB Group D Mock Test - 20 - Question 3
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Which state has least densely populated state with 17 persons per square kilometer?

RRB Group D Mock Test - 20 - Question 4
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If the mean of a, b, c is M and ab + bc + ca = 0, then the mean of a2, b2, c2 is :
Detailed Solution for RRB Group D Mock Test - 20 - Question 4

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

RRB Group D Mock Test - 20 - Question 5
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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
Detailed Solution for RRB Group D Mock Test - 20 - Question 5

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

RRB Group D Mock Test - 20 - Question 6
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Pointing towards a girl, Divya says, "She is daughter of only son of my grandfather". How the girl is related to Divya?
RRB Group D Mock Test - 20 - Question 7
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'India 2020-A Vision for the New Millennium' is a new book which has attracted the reader's attention. Who wrote this book?
RRB Group D Mock Test - 20 - Question 8
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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?
RRB Group D Mock Test - 20 - Question 9
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Choose the analogous pair.
Scales : Justice
RRB Group D Mock Test - 20 - Question 10
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Choose the number which is different from others.
RRB Group D Mock Test - 20 - Question 11
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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' ?
RRB Group D Mock Test - 20 - Question 12
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Nosegay : Flowers : Flogs :: ?
RRB Group D Mock Test - 20 - Question 13
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What is the difference between the simple and the Compound Interest on Rs 400 for 2 yrs at 5% p.a?
RRB Group D Mock Test - 20 - Question 14
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When did the Russian Revolution take place ?
RRB Group D Mock Test - 20 - Question 15
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Which is the Currency of Kiribati?
RRB Group D Mock Test - 20 - Question 16
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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?
RRB Group D Mock Test - 20 - Question 17
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Which one of the pairs given below is NOT correctly matched?
RRB Group D Mock Test - 20 - Question 18
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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
RRB Group D Mock Test - 20 - Question 19
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Under which article can the President suspend fundamental rights during emergency?
RRB Group D Mock Test - 20 - Question 20
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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?
RRB Group D Mock Test - 20 - Question 21
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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?
Detailed Solution for RRB Group D Mock Test - 20 - Question 21
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
RRB Group D Mock Test - 20 - Question 22
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Ms. Gaura Pant 'Shivani' who passed away recently was a famous
RRB Group D Mock Test - 20 - Question 23
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A real-time operating system is most likely to be used for which of the following tasks
RRB Group D Mock Test - 20 - Question 24
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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?
RRB Group D Mock Test - 20 - Question 25
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Revealed preference theory was propounded by-
RRB Group D Mock Test - 20 - Question 26
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Ajanta-Ellora caves are situated near
RRB Group D Mock Test - 20 - Question 27
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The source of suns energy is the process of—
RRB Group D Mock Test - 20 - Question 28
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Ocean currents are caused by
RRB Group D Mock Test - 20 - Question 29
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The common source of entertainment during Ashoka's reign was
RRB Group D Mock Test - 20 - Question 30
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The break even point is where-
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