20 MCQs based on Chapter: Motion (Class 9 Science) as per NCERT

 20 MCQs based on Chapter: Motion (Class 9 Science) as per NCERT:

---

MCQs – Chapter: Motion (Class 9)

1. Which of the following is a scalar quantity?

   • A) Displacement

   • B) Velocity

   • C) Speed

   • D) Acceleration

2. The SI unit of speed is:

   • A) m/s

   • B) km/h

   • C) cm/s

   • D) m

3. A body is said to be in uniform motion if:

   • A) It moves with a constant speed in a straight line

   • B) It moves in a circle

   • C) It has changing speed

   • D) It is at rest

4. Which of the following quantities has both magnitude and direction?

   • A) Distance

   • B) Speed

   • C) Displacement

   • D) Temperature

5. What does the slope of a distance-time graph represent?

   • A) Acceleration

   • B) Speed

   • C) Displacement

   • D) Velocity

6. If an object moves in a circular path with uniform speed, its motion is said to be:

   • A) Linear

   • B) Rotational

   • C) Uniform

   • D) Accelerated

7. What is the area under a speed-time graph equal to?

   • A) Speed

   • B) Acceleration

   • C) Distance travelled

   • D) Displacement

8. An object is said to be in motion if:

   • A) It changes its position with time

   • B) It moves very fast

   • C) It has zero velocity

   • D) It remains stationary

9. Which physical quantity is obtained from the slope of a velocity-time graph?

   • A) Speed

   • B) Distance

   • C) Acceleration

   • D) Displacement

10. A body covers 10 m in the first second, 20 m in the second, and 30 m in the third. The motion is:

    • A) Uniform

    • B) Accelerated

    • C) Retarded

    • D) At rest

11. Displacement can be zero when:

    • A) The object returns to the starting point

    • B) The object moves with zero speed

    • C) The object moves in a circle

    • D) The object covers a distance

12. The rate of change of velocity is called:

    • A) Speed

    • B) Displacement

    • C) Acceleration

    • D) Momentum

13. Which of the following is not a unit of speed?

    • A) m/s

    • B) km/h

    • C) m²/s

    • D) cm/s

14. What is the SI unit of acceleration?

    • A) m/s

    • B) m/s²

    • C) m/s³

    • D) m²/s

15. Which graph shows uniform acceleration?

    • A) Straight line in distance-time graph

    • B) Straight line in velocity-time graph

    • C) Curve in speed-time graph

    • D) Horizontal line in distance-time graph

16. A car moves at 20 m/s for 2 minutes. What is the distance covered?

    • A) 240 m

    • B) 1200 m

    • C) 2400 m

    • D) 400 m

17. The motion of a freely falling object is an example of:

    • A) Uniform motion

    • B) Circular motion

    • C) Uniformly accelerated motion

    • D) Oscillatory motion

18. An object travels 16 m in 4 seconds. Its average speed is:

    • A) 2 m/s

    • B) 4 m/s

    • C) 8 m/s

    • D) 16 m/s

19. A car accelerates from 10 m/s to 30 m/s in 10 seconds. The acceleration is:

    • A) 2 m/s²

    • B) 3 m/s²

    • C) 4 m/s²

    • D) 5 m/s²

20. The velocity of an object can be negative when:

    • A) It is at rest

    • B) It moves in the opposite direction

    • C) It moves in a circle

    • D) It moves with uniform acceleration