Noise pollution can be controlled by

(1) Use of sound absorbent material

(2) Delimitation of horn free zones around hospitals and schools

(3) Permissible sound levels of crackers and timing of loud speakers

(4) All of these

Subtopic:  Air Pollution |
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Which of the following is wrong?

(1) Delhi leads the country in its level of air pollution

(2) Delhi has more cars than the states of Gujrat and West Bengal put together

(3) In 1990s, Delhi ranked fourth among the 41 most polluted cities of the world

(4) PIL was filed in High court against the Air pollution in Delhi

Subtopic:  Air Pollution |
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All the buses of Delhi were converted to run on CNG

(1) Before the orders of Supreme court

(2) By the end of 2002

(3) In 1990

(4) Under the act of environment in 1987

Subtopic:  Air Pollution |
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CNG is better than petrol and diesel

(1) It burns more efficiently

(2) Is left unburnt in very little amount

(3) Cheaper

(4) All of these

Subtopic:  Air Pollution |
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Problems with CNG as the only fuel for automobiles is

(1) Difficulty in laying down pipelines for the distribution of CNG

(2) Difficulty in ensuring uninterrupted supply

(3) Can be siphoned off by thieves

(4) Both A and B

Subtopic:  Air Pollution |
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Which of the following is not used for controlling air Pollution in Delhi?

(1) Phasing out of old vehicle

(2) Use of unleaded petrol

(3) Use of low sulphur petrol and diesel

(4) Use of electrostatic precipitator in Vehicles

Subtopic:  Air Pollution |
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What does the more stringent norms for fuel mean?

(1) Reducing sulphur and aromatic content in petrol and diesel fuel

(2) Reducing lead in petrol

(3) Increasing CNG use

(4) All of these

Subtopic:  Air Pollution |
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Aromatic hydrocarbons should be 42 per cent of the concerned fuel. This was according to

(1) Euro II Norms

(2) Euro III Norms

(3) Euro IV Norms

(4) Euro I Norms

Subtopic:  Air Pollution |
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The goal according to roadmap is to reduce sulphur content to …….in petrol and diesel.

(1) 42 per cent

(2) 150 ppm

(3) 50 ppm

(4) 30 per cent

Subtopic:  Air Pollution |
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How much amount of impurities are present in waste water which make it unfit for human use?

(1) 0.01%

(2) 0.1%

(3) 0.2%

(4) 2%

Subtopic:  Water Pollution: I | Water Pollution |
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