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1. Rio+20 summit was held in

(A) Durban
(B) Johannesburg
(C) Rio de Janeiro
(D) Cancun



2. Which of the following BOD level waste water is permitted to be released inlands by industries under water (Prevention and Control of Pollution) Act, 1974?

(A) 30 mg/l
(B) 80 mg/l
(C) 100 mg/l
(D) 150 mg/l



3. Which one of the following is a non-formal environment education and awareness programme?

(A) Environmental appreciation courses.
(B) National Environment Awareness Campaign.
(C) Environmental Education in school system.
(D) Environmental Management Business Studies.



4. Which of the following oxides of nitrogen is the major air pollutant released from automobile exhausts?

(A) NO
(B) N2O
(C) NO2
(D) N2O3


5. Match List – I with List – II which contains pollutant gases and their threshold (safe limit) values as per WHO standards:

List – I                              List – II
(Pollutant gas)                 (Thresholds) 

a. CO                                i. 2 ppm
b. SO2                              ii. 50 ppm
c. NO                               iii. 0.08 ppm
d. PAN                             iv. 25 ppm

Identity the correct code:

      a        b         c         d
(A) ii        iii         i          iv
(B) iv        ii         i          iii
(C) ii         i         iv         iii
(D) iii       iv         ii          i



6. Identify the pair (element-health effect) which is correctly matched:

(A) Lead – Methaemoglobinemia
(B) Arsenic – Kidney damage
(C) Mercury – Nervous disorder
(D) PAN – Hypoxemia



7. Preparation of hazard-zoning map in case of landslide prone regions involves comprehensive investigation of

(A) Details of structural and lithological settings.
(B) Geomorphic features relating to instability of slopes.
(C) Seismicity pattern of the region.
(D) all of the above.



8. Assertion (A): Natural gas is a very attractive eco friendly fuel.
Reason (R): It produces few pollutants and less carbon dioxide per unit energy than any other fossil fuel on combustion.

Identify the correct answer:

(A) Both (A) and (R) are true and (R) is the correct explanation of (A).
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A).
(C) (A) is true but (R) is false.
(D) (A) is false but (R) is true.


9. Human activities add 7-9 gigatons of CO2 per annum into the atmosphere. Major contributor to this CO2 is

(A) Burning of fossil fuels
(B) Clearing of forests for agriculture
(C) Fermentation industries
(D) Cement industries



10. According to WHO, maximum permissible level of chlorides in drinking water is

(A) 100 mg/L
(B) 200 mg/L
(C) 600 mg/L
(D) 800 mg/L


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