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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Biodegradable organic matter of domestic sewage is used as a substrate by

(1) Bacteria and Other microbes

(2) Industries

(3) Lichens

(4) All of these

Subtopic:  Water Pollution: I | Water Pollution |
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Algal bloom is due to and results in:

(1) Presence of large amount of nutrients in water

(2) Excessive growth of free floating or planktonic algae

(3) Distinct color to the water bodies

(4) All of these

Subtopic:  Water Pollution: I | Water Pollution |
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Which of the following statements is wrong?

(1) Algal bloom cause deterioration of the water quality and fish mortality

(2) Some bloom forming algae are extremely toxic to human beings and animals

(3) Sewage discharge causes mortality of fish and other aquatic creatures

(4) Beautiful orange colored flowers have caused havoc in India because of their faster growth

Subtopic:  Water Pollution: I | Water Pollution |
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