Question

A. Choose the correct answer:
1. Global warming is caused due to the presence of excess of this gas in the atmosphere.
a. Oxygen
b. Carbon dioxide
c. Nitrogen
d. Carbon monoxide
2. The gas released during respiration is
a. oxygen
b. carbon dioxide
c. nitrogen dioxide
d. sulphur dioxide
3. Burning of fuel produces
a. carbon dioxide
b. sulphur dioxide
c. both of a and b
d. none of these
4. A gas which supports combustion is
a. nitrogen
c. hydrogen
d. methane
5. The process of photosynthesis requires
a. oxygen gas
b. carbon dioxide gas
c. nitrogen gas
d. all of these
b. oxygen​

Answer 1

Explanation:

1= Carbon dioxide

2=Crabon dioxide

3= Carbon dioxide

4= Oxygen

5= all of these...

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Answer 2

Answer:

Here is your answer :

Explanation:

Answer :

1.) b. Carbon dioxide

2.) b. Carbon dioxide

3.) a. Carbon dioxide

4.) *. Oxygen

5.) d. All of these

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