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NEET Practice Questions (MCQs) with Answers & Solutions

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According to 1990s survey which city ranked 4th among the 41 most polluted cities of the world?

A. Ankleshwar B. Delhi C. Japan D. China

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Name the metropolitan city leading the country in its levels of air pollution.

A. Ankleshwar B. Delhi C. Chennai D. Bangalore

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Which is correct according to EURO II norms?

A. Sulphur can be controlled at 350ppm in diesel and 150ppm in petrol B. Sulphur can be controlled at 150ppmin petrol C. Lead can be controlled at 350ppm in diesel D. Lead can be controlled at 150ppmin petrol

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Which harmless gases are produced by smokes stakes of thermal power plant and smelters?

A. Nd₂d ,Od₂d B. COd₂d C. CO , Nd₂d D. SOd₂d

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For reducing vehicular pollution which measures are taken by Delhi government?

A. Phasing out old vehicles B. Use of unleaded and low sulphur petrol and diesel C. Use of catalytic converter in vehicles D. all of these

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A substantial fall in the level of which gases have been found between 1997 to2005 in Delhi?

A. COd₂d ,SOd₂d B. COd₂d ,CO,SOd₂d C. COd₂d ,SOd₂d ,NOd₂d D. COd₂d ,CO,CFC

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To safeguard our water resource the amendment was passed in the year.

A. 1974 B. 1981 C. 1986 D. 1987

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Which chemical of petrol inactivates the catalysts of filter for reducing emission of poisonous gases?

A. Lead B. Rhodiium C. Straunsium D. Iron

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Which colloidal material is seen in domestic sewage?

A. Sand and silt B. Fecal material and bacteria C. Sodium and calcium D. Phosphorus

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What happens to the O₂ level and BOD of river water at sewage discharge point?

Sharp decline in O₂ level and rise in BOD

Od₂d level and BOD both increases

No change in BOD but Od₂d level increases

No change in Od₂d level but BOD increases

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