Changes Around Us Quiz - CBSE Class 5 Science

Free practice quiz: Changes Around Us (CBSE Class 5 Science). 20 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. Which of the following is an example of a reversible change?

   1. Burning paper
   2. Melting ice
   3. Rusting iron
   4. Cooking an egg
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   Answer: B. Melting ice

   Melting ice is a reversible change because it can be changed back to ice by freezing.

2. What kind of change is involved when sugar dissolves in water?

   1. Chemical change
   2. Irreversible change
   3. Physical change
   4. Permanent change
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   Answer: C. Physical change

   Dissolving sugar in water is a physical change because the sugar can be recovered by evaporating the water.

3. Which of these scenarios does NOT involve a physical change?

   1. Breaking a glass
   2. Mixing salt and pepper
   3. Grinding coffee beans
   4. Baking a cake
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   Answer: D. Baking a cake

   Baking a cake is not a physical change as it involves chemical reactions, resulting in new substances.

4. What type of change occurs when a candle burns?

   1. Physical change
   2. Chemical change
   3. Irreversible change
   4. Phase change
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   Answer: B. Chemical change

   Burning a candle involves a chemical change as the wax reacts with oxygen, producing new substances like carbon dioxide and water.

5. What determines whether a change is reversible or irreversible?

   1. Change in mass
   2. Formation of new substances
   3. Color change
   4. Presence of heat
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   Answer: B. Formation of new substances

   The formation of new substances determines whether a change is irreversible, as these changes cannot be undone by simple physical means.

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