Q.79 According to the Air (Prevention and Control of Pollution) Act, 1981, how is the term 'Emission' defined?
- AAny solid or liquid or gaseous substance coming out of any chimney, duct or flue or any other outletCorrect
- BOnly the solid particles coming out of an outlet
- COnly the liquid substance coming out of an outlet
- DOnly the gaseous substance coming out of an outlet
Solution
Concept
The Air Act, 1981 defines 'emission' as any solid, liquid or gaseous substance coming out of any chimney, duct, flue or other outlet.
Step-by-step solution
1. Recall the definitions section of the Air (Prevention and Control of Pollution) Act, 1981. 2. The Act defines 'emission' as any solid or liquid or gaseous substance coming out of any chimney, duct or flue or any other outlet. 3. This matches option A.
Explanation
The Air Act gives a wide definition of emission. It covers all three states of matter: solid, liquid and gas. It also covers every outlet, not only chimneys.
Why the other options are wrong
B: Solid particles are only one part of the definition. C: Liquid substances are only one part of the definition. D: Gases are only one part. The Act includes all three states.
Shortcut
Emission in the Air Act = solid OR liquid OR gas from ANY outlet. When options say 'only', reject them.
Common mistake
Thinking emission means only gases or smoke from chimneys.
Correct answer: A) Any solid or liquid or gaseous substance coming out of any chimney, duct or flue or any other outlet