Chapter 5. Measurement of Length and Motion Science Curiosity class 6 in English Medium ncert book solutions 40 Important MCQs with Answers

Chapter 5. Measurement of Length and Motion

The following Multiple Choice Questions (MCQs) are prepared according to the latest NCERT Curiosity textbook and CBSE examination pattern. These questions cover all the important concepts of the chapter and help students strengthen their conceptual understanding and examination skills.

40 Important MCQs with Answer Key

Question 1. What is the SI unit of length?

• (A) Centimetre
• (B) Metre
• (C) Kilometre
• (D) Millimetre

Question 2. Which instrument is best suited to measure the length of a classroom?

• (A) Ruler
• (B) Measuring Tape
• (C) Vernier Calipers
• (D) Compass

Question 3. One metre is equal to _____ centimetres.

• (A) 10
• (B) 100
• (C) 1000
• (D) 10000

Question 4. One kilometre is equal to _____ metres.

• (A) 10
• (B) 100
• (C) 1000
• (D) 10000

Question 5. Which of the following is a standard unit of length?

• (A) Handspan
• (B) Cubit
• (C) Metre
• (D) Footstep

Question 6. Which instrument is most suitable for measuring the length of a pencil?

• (A) Measuring Tape
• (B) Ruler
• (C) Metre Scale
• (D) Odometer

Question 7. Curved lengths are generally measured using a _____.

• (A) Thread
• (B) Brick
• (C) Compass
• (D) Thermometer

Question 8. Reading a scale from an angle causes _____.

• (A) Rotation
• (B) Oscillation
• (C) Parallax Error
• (D) Circular Motion

Question 9. Which unit is smaller than a centimetre?

• (A) Kilometre
• (B) Metre
• (C) Millimetre
• (D) Foot

Question 10. One centimetre is equal to _____ millimetres.

• (A) 2
• (B) 5
• (C) 10
• (D) 100

Question 11. The position of an object is described with respect to a _____.

• (A) Magnet
• (B) Reference Point
• (C) Scale
• (D) Clock

Question 12. An object is said to be in motion when its _____ changes with time.

• (A) Colour
• (B) Shape
• (C) Position
• (D) Size

Question 13. Motion along a straight path is called _____.

• (A) Circular Motion
• (B) Oscillatory Motion
• (C) Linear Motion
• (D) Random Motion

Question 14. The motion of a ceiling fan is an example of _____.

• (A) Linear Motion
• (B) Circular Motion
• (C) Oscillatory Motion
• (D) Rectilinear Motion

Question 15. A swinging pendulum shows _____.

• (A) Circular Motion
• (B) Linear Motion
• (C) Oscillatory Motion
• (D) Random Motion

Question 16. Motion that repeats after equal intervals of time is called _____.

• (A) Random Motion
• (B) Zigzag Motion
• (C) Periodic Motion
• (D) Linear Motion

Question 17. Which of the following is an example of linear motion?

• (A) Merry-go-round
• (B) Swing
• (C) Train moving on a straight track
• (D) Rotating fan

Question 18. Which of the following is an example of circular motion?

• (A) Falling stone
• (B) Rotating wheel
• (C) Walking person
• (D) Moving lift

Question 19. Which of the following is an example of oscillatory motion?

• (A) Clock pendulum
• (B) Running car
• (C) Flying bird
• (D) Bullet train

Question 20. Which of the following is periodic?

• (A) Swing
• (B) Earth rotating on its axis
• (C) Hands of a clock
• (D) All of these

Question 21. Which ancient Indian unit of length is mentioned in the chapter?

• (A) Mile
• (B) Angula
• (C) Yard
• (D) Inch

Question 22. Which ancient unit represented a long distance?

• (A) Millimetre
• (B) Yojana
• (C) Centimetre
• (D) Inch

Question 23. A measuring tape is generally made of _____.

• (A) Flexible material
• (B) Glass
• (C) Wood only
• (D) Stone

Question 24. Which instrument is suitable for measuring body measurements?

• (A) Metre Scale
• (B) Measuring Tape
• (C) Ruler
• (D) Divider

Question 25. If the zero mark of a ruler is damaged, you should _____.

• (A) Throw away the ruler
• (B) Begin from another marking
• (C) Guess the length
• (D) Use only the damaged end

Question 26. Accurate measurements are important in _____.

• (A) Construction
• (B) Science
• (C) Engineering
• (D) All of these

Question 27. Which error is avoided by keeping the eye vertically above the scale?

• (A) Human Error
• (B) Instrument Error
• (C) Parallax Error
• (D) Random Error

Question 28. The SI system is accepted _____.

• (A) Only in India
• (B) Only in Asia
• (C) Worldwide
• (D) Only in Europe

Question 29. Which unit is most suitable for measuring the distance between two cities?

• (A) Millimetre
• (B) Centimetre
• (C) Metre
• (D) Kilometre

Question 30. Which object is generally measured using a metre scale?

• (A) Pencil
• (B) Table
• (C) Needle
• (D) Coin

Question 31. Which statement is correct?

• (A) Motion depends on a reference point.
• (B) Motion never changes.
• (C) Reference points are unnecessary.
• (D) All objects are always at rest.

Question 32. Which object can be at rest with respect to one object and in motion with respect to another?

• (A) A passenger inside a moving bus
• (B) A tree
• (C) A building
• (D) A mountain

Question 33. The movement of a merry-go-round is _____.

• (A) Linear Motion
• (B) Circular Motion
• (C) Oscillatory Motion
• (D) Random Motion

Question 34. Which of the following is NOT a standard unit?

• (A) Metre
• (B) Kilometre
• (C) Handspan
• (D) Centimetre

Question 35. Measurement helps us to _____.

• (A) Compare objects accurately
• (B) Guess distances
• (C) Change motion
• (D) Stop movement

Question 36. Which of the following is measured in kilometres?

• (A) Width of a notebook
• (B) Height of a chair
• (C) Distance between two towns
• (D) Length of a pen

Question 37. Which type of motion is shown by the Earth revolving around the Sun?

• (A) Circular Motion
• (B) Linear Motion
• (C) Oscillatory Motion
• (D) Random Motion

Question 38. Which of the following is NOT a measuring instrument?

• (A) Ruler
• (B) Measuring Tape
• (C) Metre Scale
• (D) Compass

Question 39. Which motion is repeated again and again after equal intervals?

• (A) Random Motion
• (B) Periodic Motion
• (C) Zigzag Motion
• (D) Irregular Motion

Question 40. Which statement about measurement is correct?

• (A) Standard units make measurements uniform.
• (B) Handspan is more accurate than a metre.
• (C) Body-part measurements are accepted worldwide.
• (D) Standard units are unnecessary.

Answer Key

1. B
2. B
3. B
4. C
5. C
6. B
7. A
8. C
9. C
10. C
11. B
12. C
13. C
14. B
15. C
16. C
17. C
18. B
19. A
20. D
21. B
22. B
23. A
24. B
25. B
26. D
27. C
28. C
29. D
30. B
31. A
32. A
33. B
34. C
35. A
36. C
37. A
38. D
39. B
40. A

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