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CIRCUITS AND ELECTRIC CURRENT CLASS 7 MCQs

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Physical and Chemical Changes Chapter 7 MCQS

Physical and Chemical Changes ( PART 1 )

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

 Burning of wood

 Rusting of iron

 Cooking of eggs

 Melting of ice

2. When water evaporates, it undergoes which type of change?

 Chemical change

 Biological change

 Nuclear change

 Physical change

3. Which of the following is a characteristic of a chemical change?

 No change in properties

 Change in state

 Change in color

 Reversibility

4. Rusting of iron is an example of a:

 Chemical change

 Nuclear change

 Physical change

 Biological change

5. What happens when a physical change occurs?

 New substances are formed

 Energy is always absorbed

 Chemical bonds are broken and formed

  Composition of substances remains the same

6. What is the result of a chemical change?

 Change in state

 Change in size

 Change in shape

 Formation of new substances

7. Which of the following is an example of a physical change in matter?

 Rotting of fruits

 Burning of coal

 Digestion of food

 Freezing of water

8. When ice melts into water, it is an example of:

 Nuclear change

 Physical change

 Chemical change

 Biological change

9. Which of the following is a characteristic of a physical change?

 Formation of a new substance

 Change in chemical composition

 Irreversible

 Formation of gas

10. What type of change occurs when milk turns sour?

  Nuclear change

 Chemical change

 Biological change

 Physical change

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