Question

D. Put a cross (*) against the wrong statements.
1. Replacement of warm air with cool air causes wind.
2. Water evaporates slowly when it is windy.
3. Hot air is heavier than cold air.
4. Washing of clothes makes the water of pond fit for drinking.
5. Drinking of impure water can cause diseases.
6. A process of purifying water is called filtration.
7. Insoluble impurities of water are removed by sedimentation.​

Answer 1

Answer:

1*

3*

4*

and Thus the others are true, you can check it

Answer 2

Explanation:

1 right

2 wrong

3wrong

4right

5 right

6 right

7 wrong