Question

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:

• A. 1, 2 & 3
• B. 2, 3 & 4
• C. 1, 2 & 4
• D. 1, 3 & 4

Answer 1

Answer:

C. 1, 2 & 4

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