RRB Group D Free Mock Test Set-20 MCQ Series for CBT Exam

Welcome to the RRB Group D Free Mock Test Set-20, designed to help you prepare for the upcoming CBT (Computer-Based Test) examination.

This test series is structured according to the latest syllabus and exam pattern, focusing on assessing your knowledge and problem-solving skills across various sections.

RRB Group D Free Mock Test Set-20 MCQ Series

Here are the MCQs:

1. Which Indian scientist is credited with developing the ‘Chandrayaan-2’ mission?

• A) Dr. K. Sivan
• B) Dr. Vikram Sarabhai
• C) Dr. APJ Abdul Kalam
• D) Dr. Satish Dhawan

2. Which Indian state is the largest producer of turmeric?

• A) Maharashtra
• B) Tamil Nadu
• C) Karnataka
• D) Telangana

3. The ‘Pradhan Mantri Kaushal Vikas Yojana’ focuses on:

• A) Agricultural Development
• B) Urban Housing
• C) Skill Development
• D) Women Empowerment

4. A train 150 m long passes a pole in 10 seconds. What is the speed of the train?

• A) 45 km/h
• B) 54 km/h
• C) 60 km/h
• D) 72 km/h

5. The HCF of two numbers is 36, and their LCM is 252. If one number is 72, what is the other number?

• A) 84
• B) 108
• C) 126
• D) 144

Also Read: SSC GD 2025 Free Practice SET-25 (MCQs) for Constable CBT Exam

6. If the compound interest on ₹10,000 for 2 years at 10% per annum is ₹2,100, the simple interest for the same period will be:

• A) ₹1,800
• B) ₹2,000
• C) ₹2,100
• D) ₹2,200

7. What is the unit of the ‘magnetic flux’?

• A) Tesla
• B) Weber
• C) Henry
• D) Farad

8. Which type of lens is used to correct hypermetropia (farsightedness)?

• A) Convex lens
• B) Concave lens
• C) Cylindrical lens
• D) Bifocal lens

9. Which among the following is not a greenhouse gas?

• A) Carbon dioxide
• B) Methane
• C) Oxygen
• D) Nitrous oxide

10. If ‘COMPUTER’ is coded as ‘DQNVVGFS,’ how will ‘LAPTOP’ be coded?

• A) MBQUQP
• B) MBRVQR
• C) NBQVRQ
• D) MCQVRQ

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11. Complete the series: 3, 7, 15, 31, 63, ?

• A) 125
• B) 127
• C) 129
• D) 131

12. In a certain code language, ‘MANGO’ is written as ‘91347’. How is ‘APPLE’ written in the same code?

• A) 15593
• B) 15539
• C) 15395
• D) 13559

13. What is the main pollutant in vehicular emissions?

• A) Sulfur dioxide
• B) Carbon monoxide
• C) Nitrogen dioxide
• D) Particulate matter

14. Which Indian state has the largest forest cover in terms of area?

• A) Arunachal Pradesh
• B) Madhya Pradesh
• C) Chhattisgarh
• D) Odisha

15. The Tropic of Cancer does not pass through which of the following states?

• A) Gujarat
• B) Jharkhand
• C) West Bengal
• D) Andhra Pradesh

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Answers to the RRB Group D Free Mock Test Set-20 MCQ Series

Here are the answers:

1. A) Dr. K. Sivan
2. D) Telangana
3. C) Skill Development
4. B) 54 km/h
5. A) 84
6. B) ₹2,000
7. B) Weber
8. A) Convex lens
9. C) Oxygen
10. B) MBRVQR
11. B) 127
12. A) 15593
13. B) Carbon monoxide
14. B) Madhya Pradesh
15. D) Andhra Pradesh

Also Read: RRB Group D Free Mock Test Set-19 MCQ Series for CBT Exam

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