Changes around us Worksheet-7

Changes around us Worksheet-7

Multiple-Choice Question:

11. When water vapour is cooled, it condenses. Is it a chemical change?

(A) Yes                                              (B) No

(C) No, it’s a physical change         (D) Can’t say

12. When candle wax is heated, it melts. What type of change is it?

(A) Irreversible    (B) Reversible      (C) None of these

13. When a match is struck, it burns.

(A) This is a physical and irreversible change

(B) This is a chemical and reversible change

(C) This is a physical and reversible change

(D) This is a chemical and irreversible change

14. When peas are frozen, they become hard. Which type of change is it?

(A) Reversible      (B) Irreversible    (C) None of these

15. When whisked egg is heated, it scrambles.

(A) It’s a reversible change

(B) It’s an irreversible change

(C) None of these

16. When soda is added to water it fizzes, it is a/an:

(A) Reversible change 

(B) Irreversible change

(C) None of these

17. When an ice cream is left in the sun, it melts. It is a/an _______ change.

(A) None of these

(B) Reversible

(C) Irreversible

18. Bursting of balloon is a/an:

(A) None of these

(B) Reversible change

(C) Irreversible change

19. When a candle is lit, the wax burns. It is:

(A) A reversible change

(B) An irreversible change

(C) None of these

20. When iron is exposed to water, it gets rusted.

(A) This is a chemical and reversible change

(B) This is a physical and irreversible change

(C) This is a chemical and irreversible change

(D) This is a physical and reversible change

Answer Key:

11. (C)
12. (A)
13. (D)
14. (A)
15. (B)
16. (B)
17. (C)
18. (C)
19. (B)
20. (C)