Question

B. Mark for true and x for false statements.
1. The atmosphere is the same at both 50 km and 1 km above the Earth.
2. The percentage of carbon dioxide in the air is very low.
3. Air exerts pressure in the downward direction only.
4. Air helps in burning.
5. Water can dissolve all substances.
6. Distilled water is the purest form of water.​

Answer 1

Answer:

X

X

t

t

X

t

Explanation:

hope it helps you

Answer 2

1) FALSE. THE ATMOSPHERE IS DIFFERENT AT 50 KM AND 1KM.

2) TRUE

3) FALSE. AIR EXERTS PRESSURE IN ALL DIRECTIONS.

4) TRUE.

5) FALSE. WATER CAN DISSOLVE ALMOST EVERY THING.

6) TRUE.