Question

A.     State wheather the following statements are True or False.         [1x10=10] 1)      Yak hair is not used to make woolen fabric. 2)      Wool is a poor conductor of heat and it has air trapped in between the fibres. 3)      Common salt dissolved in water turns blue litmus red. 4)      Phenolphthalein is a natural indicator. 5)      When a candle burns, both physical and chemical changes take place. 6)      Stretching of rubber band is not a physical change. 7)      Even in the coldest month the temperature in tropical rainforest is generally higher than about 150C. 8)      Air expands on cooling and contracts on heating. 9)      In winter the winds flow from the land to the oceans. 10)  Cotton is grown in sandy clayey soil.​

Answer 1

Explanation:

1-false

2-true

3-false

4-false

5-true

Answer 2

Answer:

1 true

2 true

3

4 false

5 false

6. false

7

8 false

9

10 false