EARTH’S ATMOSPHERE

                                                                                                                                                         Proff. R. S. Sengar

1. Which is the most toxic pollutant:

(a) SO2           (b) CO

(c) CO2          (d) Carbon

Ans. B

2. The major pollutant in most polluted Indian city is:

(a) CO2 CO       (b) O3CH4

(c) CO, oxides of Sulphur  

(d) CO2  CH4

Ans. C

3. Indicator used for SO pollution is:

(a) Ferns          (b) Mosses

(c) Lichens       (d) Andropogan grass

Ans. C

4. Loudness causes:

(a) Impairment in hearing

(b) Constriction of blood vessels

(c) Dilation of blood vessels

(d) Irritation

Ans. A

5. Jet aeroplanes releases pollutants in the form of:

(a) Fog          (b) Aerosol

(c) Photochemical oxidant

(d) Smog

Ans. B

6. Normal concentration of which of the component does not act as air pollutant :

(a) CO           (b) Hydrocarbons

(c) SO           (d) CO

Ans. A

7. Minimata is a pollution related disease which result from:

(a) Release of industrial waste mercury unto fishing water

(b) Accumulation of arsenical in water

(c) Release of human organic waste into deinking water

(d) Oil spils into sea

Ans. A

8. The main factor responsible for water pollution is:

(a) Detergent     (b) Industrial waste

(c) NH           (d) Smoke

Ans. B

9. Which is the rich source of energy but never causes air pollution:

(a) Solar         (b) Nuclear

(c) Coal          (d) Wood

Ans. A

10. Attack of asthma in dome persons is due to:

(a) Depletion of ozone layer

(b) Excess of CO in air

(c) Inhaling of some air borne pollens

(d) Eating polluted food

Ans. C

11. The pollutants which causes optical illusion leading to road &aieaccidenrs is:

(a) PAN          (b) Aerosol

(c) Smog         (d) Acid rain

Ans. C

12. Use of scrubbers is best suitable for kind of pollutant:

(a) Colloids       (b) Particulate

(c) Gaseous      (d) Vapour

Ans. C

13. PAN a secondary pollutant is formed y:

(a) Photochemical reaction

(b) Thermochemical reaction

(c) Hydrochemical reaction

(d) Biochemical reaction

Ans. A

14. IF a lake is contaminated with insecticide DDT, its concentration would be highest in:

(a) Fish eating birds

(b) Small fish

(c) Protozoa

(d) Algae

Ans. A

15. Units of intensity of sound is:

(a) Moran        (b) Kalvin

(c) Murtz          (d) Decibel

Ans. D

Writer: Dr. R. S. Sengar, Director Training and Placement, Sardar VallabhBhai Patel University of Agreiculture and Technology, Modipuram, Meerut.