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Changes Around Us Practice Questions

Class 6 · Science · 1162 free MCQs with instant results and detailed explanations.

1162
Total
344
Easy
579
Medium
239
Hard

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Topics in Changes Around Us

Irreversible Changes 382
Physical and Chemical Changes 406
Reversible Changes 374

Sample Questions from Changes Around Us

Here are 10 sample questions. Start a quiz to get randomized questions with scoring.

Q1
Easy
Which of the following is an example of a reversible change?
A. Melting of ice
B. Burning of wood
C. Rusting of iron
D. Cooking of an egg
Show Answer & Explanation
Correct Answer: A
Melting of ice can be reversed by freezing the water again, while the others result in permanent changes.
Q2
Easy
What happens to a solid when it melts?
A. It disappears
B. It becomes a liquid
C. It changes color
D. It becomes gas
Show Answer & Explanation
Correct Answer: B
When a solid melts, it converts into liquid form, like ice turning into water.
Q3
Easy
Which process is NOT reversible?
A. Freezing water
B. Dissolving sugar in water
C. Baking a cake
D. Evaporating salt water
Show Answer & Explanation
Correct Answer: C
Baking a cake involves chemical changes that cannot be reversed, unlike the other processes which can revert.
Q4
Medium
Which of the following is a reversible change?
A. Melting of ice
B. Burning of paper
C. Rusting of iron
D. Cooking of egg
Show Answer & Explanation
Correct Answer: A
Melting of ice is reversible because ice can be turned back into water and then freeze again. The other options involve permanent changes.
Q5
Medium
Which of the following processes does NOT involve a reversible change?
A. Dissolving sugar in water
B. Freezing water
C. Baking a cake
D. Evaporating saltwater
Show Answer & Explanation
Correct Answer: C
Baking a cake is irreversible as the ingredients undergo a chemical change and cannot be returned to their original state.
Q6
Medium
During which process does a reversible change take place?
A. Condensation of steam
B. Burning wood
C. Fermentation of sugar
D. Decomposing leaves
Show Answer & Explanation
Correct Answer: A
Condensation of steam is reversible because steam can be converted back into water, while the other processes are irreversible.
Q7
Medium
What happens to the state of matter during a reversible change?
A. It remains the same
B. It changes permanently
C. It can change back and forth
D. It becomes a new substance
Show Answer & Explanation
Correct Answer: C
In a reversible change, matter can change states (like solid to liquid) and revert back to its original state.
Q8
Hard
Which of the following processes is an example of a reversible change?
A. Melting of ice
B. Burning of wood
C. Cooking of an egg
D. Rusting of iron
Show Answer & Explanation
Correct Answer: A
Melting of ice is reversible because when ice melts into water, it can be frozen back to ice again.
Q9
Hard
A student heats a wax candle until it melts. If she allows it to cool down, what would happen?
A. The wax will disappear.
B. The wax will remain melted.
C. The wax will solidify back to its original shape.
D. The wax will turn into a gas.
Show Answer & Explanation
Correct Answer: C
When wax cools down, it solidifies back into its original shape, demonstrating a reversible change.
Q10
Hard
Which of the following processes is considered a reversible change?
A. Melting of ice
B. Burning of wood
C. Rusting of iron
D. Cooking of an egg
Show Answer & Explanation
Correct Answer: A
The melting of ice is reversible because when cooled, it can freeze back to ice.

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Changes Around Us — Class 6 Science Practice Questions Online

This page contains 1162 practice MCQs for the chapter Changes Around Us in Class 6 Science. The questions are organized by difficulty — 344 easy, 579 medium, 239 hard — so you can choose the right level for your preparation.

Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 3 topics, giving you comprehensive coverage of the entire chapter.