May 10, 2024
Physical and chemical changes class 7

Physical and Chemical Changes Chapter 7 MCQS

1. Which of the following is a chemical change?

 
 
 
 

2. What happens when iron is heated strongly in the presence of air?

 
 
 
 

3. Which of the following is NOT a characteristic of a chemical change?

 
 
 
 

4. Which of the following is a physical change?

 
 
 
 

5. When milk turns into curd, it is an example of:

 
 
 
 

6. Which of the following is a sign of a chemical change?

 
 
 
 

7. Which of the following is an example of a chemical change?

 
 
 
 

8. Which of the following is NOT a sign of a chemical change?

 
 
 
 

9. Mixing iron filings and sulfur powder and then heating the mixture is an example of:

 
 
 
 

10. What happens when milk is left at room temperature for a long time?

 
 
 
 

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