If you are preparing for the RRB Group D exam you already know that the Science section plays an important role in scoring good marks One of the most common and basic topics in this section is Physical Quantities and Measurement This chapter helps us understand how different physical quantities are measured and what units are used to express them.

In this topic you will learn about quantities like length mass time and temperature along with their SI units measuring instruments and types of errors that can occur during measurement These basic concepts may look simple but they are frequently asked in Railway Group D Science questions making them very important for your preparation.

So if you want to strengthen your Physics fundamentals and score better in the exam go through these important RRB Group D Science questions from Physical Quantities and Measurement Practice them carefully understanding each concept will help you solve questions faster and with more accuracy in the real exam.

RRB Group D Science: Physical Quantities and Measurement Questions

1. What is the SI unit of length?

(A) Centimeter
(B) Meter
(C) Foot
(D) Inch

Answer – (B)

2. The unit of mass in the MKS system is

(A) Gram
(B) Pound
(C) Kilogram
(D) Milligram –

Answer – (C)

3. What is the common unit of time in all three systems – MKS, CGS, and FPS?

(A) Minute
(B) Hour
(C) Second
(D) Microsecond

Answer – (C)

4. What is a quantity that has only magnitude and no direction called?

(A) Vector quantity
(B) Scalar quantity
(C) Inverse quantity
(D) Fundamental quantity

Answer – (B)

5. What types of quantities are work, energy, and power?

(A) Vector quantity
(B) Scalar quantity
(C) Fundamental quantity
(D) Derived quantity

Answer – (B)

6. What types of quantities are force, displacement, velocity, and acceleration?

(A) Scalar
(B) Vector
(C) Fundamental
(D) Electrical

Answer – (B)

7. How many fundamental quantities are there in the SI system?

(A) 5
(B) 6
(C) 7
(D) 9

Answer – (C)

8. What is the SI unit of electric current?

(A) Ohm
(B) Ampere
(C) Volt
(D) Watt

Answer – (B)

9. The SI unit of light intensity is

(A) Candela
(B) Lumen
(C) Watt
(D) Hertz

Answer – (A)

10. What is the SI unit of amount of substance?

(A) mole
(B) liter
(C) kelvin
(D) tesla

Answer – (A)

11. What is the SI unit of angle (plane angle)?

(A) steradian
(B) radian
(C) degree
(D) minute

Answer – (B)

12. The SI unit of solid angle is

(A) radian
(B) steradian
(C) degree
(D) hertz

Answer – (B)

13. What is the SI unit of resistance?

(A) volt
(B) ampere
(C) ohm
(D) farad

Answer – (C)

14. What type of quantity is displacement?

(A) scalar
(B) vector
(C) fundamental
(D) derivative

Answer – (B)

15. What type of quantity is work?

(A) Scalar quantity
(B) Vector quantity
(C) Fundamental quantity
(D) Specific quantity

Answer – (A)

16. What is a quantity that has magnitude as well as direction called?

(A) Scalar quantity
(B) Vector quantity
(C) Inverse quantity
(D) Compound quantity

Answer – (B)

17. What is the SI unit of force?

(A) Joule
(B) Newton
(C) Pascal
(D) Dyne

Answer – (B)

18. The unit of electrical resistance is

(A) Volt
(B) Ohm
(C) Farad
(D) Tesla

Answer – (B)

19. What type of quantity is pressure?

(A) Vector
(B) Scalar
(C) Fundamental
(D) Magnetic

Answer – (B)

20. What is the SI unit of pressure?

(A) Watt
(B) Pascal
(C) Newton
(D) Tesla

Answer – (B)

21. What is the product of force × velocity called?

(A) Power
(B) Work
(C) Momentum
(D) Energy

Answer – (A)

22. 1 newton is equal to

(A) kg m/s
(B) kg m/s²
(C) g cm/s²
(D) Joule/second

Answer – (B)

23. 1 becquerel (Bq) is equal to:

(A) 1 radioactive decay in 1 second
(B) 1 meter per second
(C) 1 ohm resistance
(D) 1 joule of energy

Answer – (A)

24. The SI unit of radioactivity is

(A) Tesla
(B) Becquerel (Bq)
(C) Coulomb
(D) Hertz

Answer – (B)

25. What is the SI unit of electric charge?

(A) Ohm
(B) Coulomb
(C) Ampere
(D) Volt

Answer – (B)

 

Conclusion

Understanding Physical Quantities and Measurement is the first step toward mastering the Science section of the RRB Group D exam Once you know how to measure different quantities use correct SI units and avoid common errors solving Physics questions becomes much easier.

Keep practicing these RRB Group D Science questions regularly and try to understand the logic behind every answer Remember strong basics always lead to better performance in the exam So stay consistent revise daily and you will definitely feel more confident on the exam day!