Photochemical smog was first observed in-
A. Los Angeles
B. Tokyo
C. New York
D. Sydney

What are biodegradable pollutants?

Differentiate between biodegradable and non-biodegradable pollutants.

Nobel Prize was awarded to PaulMuller, on the discovery of which of the following pesticides?
A. Malathion
B. Parathion
C. Pyrethrum
D. DDT

PAN (Peroxyacetyl nitrate) is an important constituent of photochemical smog. It is
A. Primary pollutant
B. Secondary pollutant
C. Natural pollutant
D. Corollary pollutant

PAN is
A.Peroxide Acetic Nitrate
B. PeroxyAcetyl Nitrate
C. PeroxyAcetic Nitrate
D.None of the above

Which are visible pollutants known to you?

Which of the following are non-degradable pollutants?
A. Mercuric salts
B. Long-chain phenolics
C. DDT
D. All of the above

Photochemical smog consists of
A) $O_3$, $SO_2$ and hydrocarbons
B) $O_3$ , PAN and $NO_X$
C) $SO_2$,$CO_2$ and hydrocarbons
D) $SO_2$, PAN and Smoke

A mutagenic pollutant is
1. Organophosphates
2. Resins
3. Hydrocarbons
4. Nitrogen oxides

The PAN (peroxyacetyl nitrate) is an important constituent of photochemical smog, however, it is a
A. Corollary pollutant
B. Primary pollutant
C. Natural pollutant
D. Secondary pollutant

One of the following acts as a secondary pollutant
A) $Br_2$
B) $o_3$
C) $Cl_2$
D) CO