Railway RRB Group D 2025 Mock Test SET-66, Answer MCQs Now

Railway RRB Group D 2025 Mock Test SET-66: This mock test is designed to help aspirants prepare for the Railway RRB Group D 2025 exam. It consists of multiple-choice questions covering various subjects, including General Science, Mathematics, Logical Reasoning, and General Awareness.

Answering these questions will help candidates assess their preparation level and improve their problem-solving skills. Below are the MCQs along with their correct answers.

Railway RRB Group D 2025 Mock Test SET-66

1. The general gas equation PV = nRT is valid—

• a) Always
• b) Never
• c) Only at high pressure
• d) Near zero pressure

2. A Panchayat Samiti spends 40% of its government grant on general expenses and 25% on education. If ₹2,100 is spent on healthcare, what is the total amount of the grant?

• a) ₹3,530
• b) ₹5,250
• c) ₹5,025
• d) ₹5,520

3. The difference between the squares of two consecutive even numbers is 200. The smaller number is—

• a) 49
• b) 47
• c) 53
• d) 55

4. A number, when multiplied by 13, increases by 180. What is the number?

• a) 45
• b) 15
• c) 12
• d) 5

5. Nitrogen dioxide dissolves in water to produce—

• a) HNO₂
• b) HNO₃
• c) HNO₂ + HNO₃
• d) None of the above

Also Read:Railway RRB Group D 2025 Mock Test SET-65, Answer MCQs Now

6. The smallest four-digit number that can be formed using 2, 4, 0, and 7 is—

• a) 2407
• b) 2470
• c) 2247
• d) 2047

7. The LCM of three numbers in the ratio 2:3:6 is 72. What is their GCD?

• a) 12
• b) 18
• c) 24
• d) 36

8. In an examination, 60% of students passed in English and 70% in Mathematics. If 20% failed both subjects and 2,500 students passed both, how many students appeared in the exam?

• a) 6,000
• b) 3,000
• c) 5,000
• d) 3,500

9. Who was the founder of Prarthana Samaj?

• a) Raja Ram Mohan Roy
• b) Debendranath Tagore
• c) Atmaram Pandurang
• d) Dayananda Saraswati

10. A type of solder consists of lead and tin in a 5:4 ratio. How much more tin should be added to 4.5 kg of solder to make the ratio 1:1?

• a) 4 kg
• b) 1/2 kg
• c) 1 kg
• d) 1/3 kg

11. Fill in the blank: 12:16 = ? : 20

• a) 26
• b) 15
• c) 14
• d) 11

12. In a school, the ratio of passed to failed students is 9:2 out of 132 students. If 4 more students had passed, what would the new ratio be?

• a) 3:28
• b) 28:5
• c) 4.25
• d) 25:4

13. Food that lasts for 20 days for 24 people will last for how many days if 40 people consume it?

• a) 20
• b) 12
• c) 14
• d) 16

14. Which component is found only in RNA?

• a) Adenine
• b) Guanine
• c) Uracil
• d) Cytosine

15. The ratio of bus fare to train fare from Kolkata to a certain place is 2:3. If train fare increases by 20% and bus fare by 10%, what will be the new ratio?

• a) 20:9
• b) 11:18
• c) 12:7
• d) 11:12

Also Read:Railway RRB NTPC 2025 Static GK Practice Set-70 for CBT Exam

Answers to the Railway RRB Group D 2025 Mock Test SET-66

Here are the answers:

1. b
2. b
3. a
4. b
5. c
6. b
7. a
8. c
9. c
10. b
11. b
12. b
13. b
14. c
15. b

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