Nitrous oxide is: 1.Also known as laughing gas 2.Colorless & non-flammable gas 3.One of the pollutants to measure National Air Quality Index 4.One of the greenhouse gases covered in Kyoto Protocol Select the correct option from codes given below:

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Nitrous oxide is:

1.Also known as laughing gas

2.Colorless & non-flammable gas

3.One of the pollutants to measure National Air Quality Index

4.One of the greenhouse gases covered in Kyoto Protocol

Select the correct option from codes given below:

A1, 2 & 3

B2, 3 & 4

C1, 2 & 4

D1, 3 & 4

Answer:

It was Nitrogen dioxide is one of the pollutants to measure the National Air Quality Index.

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