Question

4. What is acid rain? Discuss
Objective Questions
Choose the correct option.
1. Which of the following components of air helps plants manufacture carbohydrates?
(a) Nitrogen
(b) Carbon dioxide (c) Oxygen
(d) Argon
2. Which of the following gases is essential for respiration?
(a) Nitrogen
(b) Oxygen
(c) Carbon dioxide
(d) Argon
3. Which of the following gaseous mixtures is carried by deep-sea divers for respiration?
(a) Air
(b) Oxygen and carbon monoxide
(c) Oxygen and carbon dioxide
(d) Oxygen and helium
4. Which of the following gases is evolved when marble reacts with an acid?
(a) Nitrogen
(b) Oxygen
(c) Carbon dioxide (d) Argon​

Answer 1

Answer:

acid rain is caused of more pollution

Answer 2

Answer:

1-(c) carbon dioxide

2-(b) oxygen

3-(d) oxygen and helium

4-(c) carbon dioxide