Question

Write (T) for true and (F) for false statements.
1. Lead is present in petrol.
2. Carbon dioxide, oxygen and hydrogen are greenhouse gases.
3. Carbon monoxide gas protects us from the harmful ultraviolet rays of the sun.
4. Carbon dioxide reduces the oxygen-carrying capacity of the blood.
5. Rain water purification is a method of conserving water.​

Answer 1

Answer:

1. true

2. true

3. False

4. false

5. true

Answer 2

Answer:

1)true

2)true

3)false

4)false

5)true