NCERT Changes Around Us Objective Questions
NCERT Changes Around Us Objective Questions – CBSE Class 6 Science
Class: 6
Subject: Science
Section: Changes Around Us
Topic: NCERT Changes Around Us Objective Questions
Board: CBSE (Based on NCERT Syllabus)
Subject: Science
Section: Changes Around Us
Topic: NCERT Changes Around Us Objective Questions
Board: CBSE (Based on NCERT Syllabus)
These Multiple Choice Questions (MCQs) are designed strictly as per the NCERT syllabus, making them ideal for CBSE Class 6 Science examination preparation. Each question includes detailed explanations for concept clarity.
1. Any alteration in shape, size or state is called:
Answer: B. Change
A change refers to any modification in form, position, state, or properties of matter.
A change refers to any modification in form, position, state, or properties of matter.
2. Which is a reversible change?
Answer: B. Melting ice
Ice can refreeze into solid water, making it reversible.
Ice can refreeze into solid water, making it reversible.
3. Which is irreversible?
Answer: C. Breaking glass
Broken glass cannot return to its original form.
Broken glass cannot return to its original form.
4. Growing of a plant is a:
Answer: B. Slow change
Growth occurs gradually over time.
Growth occurs gradually over time.
5. Which is a fast change?
Answer: C. Burning matchstick
It occurs within seconds.
It occurs within seconds.
6. Day and night is a:
Answer: B. Periodic change
It repeats regularly every 24 hours.
It repeats regularly every 24 hours.
7. Cooking food is:
Answer: B. Irreversible
Cooked food cannot become raw again.
Cooked food cannot become raw again.
8. Expansion on heating is usually:
Answer: C. Reversible
Materials contract back on cooling.
Materials contract back on cooling.
9. Which is a natural change?
Answer: B. Flower blooming
Occurs naturally without human action.
Occurs naturally without human action.
10. Rusting needs:
Answer: C. Oxygen and moisture
Both are necessary for rust formation.
Both are necessary for rust formation.
11. Freezing of water is:
Answer: B. Physical reversible
No new substance forms.
No new substance forms.
12. Which shows contraction?
Answer: B. Cooling metal
Cooling reduces volume.
Cooling reduces volume.
13. Germination is a:
Answer: B. Slow change
Seed growth takes time.
Seed growth takes time.
14. Which is man‑made change?
Answer: C. Making curd
It occurs due to human intervention.
It occurs due to human intervention.
15. Weather changes are:
Answer: A. Periodic
They repeat seasonally.
They repeat seasonally.
16. Which is NOT reversible?
Answer: C. Burning cloth
New substances form.
New substances form.
17. Boiling water is:
Answer: B. Physical
Steam condenses back.
Steam condenses back.
18. Explosion is a:
Answer: B. Fast change
Occurs instantly.
Occurs instantly.
19. Railway gaps are left for:
Answer: B. Expansion
Metals expand in heat.
Metals expand in heat.
20. Digestion is a:
Answer: B. Chemical
Food converts into new substances.
Food converts into new substances.
