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NEET Practice Questions (MCQs) with Answers & Solutions

Practice free NEET NEET multiple-choice questions online with instant answers and detailed explanations. No login required.

All Physics Chemistry Botany Zoology

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What do you understand by greenhouse effect?

A. Increase in temperature due to increase in Od₂d concentration of the atmosphere B. Decrease in temperature due to decrease in Od₂d concentration of the atmosphere C. Increase in temperature due to increase in COd₂d concentration of the atmosphere D. Decrease in temperature due to decrease in COd₂d concentration of the atmosphere

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In which sphere of atmosphere the ozone layer is seen?

A. Troposphere B. Stratosphere C. Homosphere D. Thermosphere

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The release of phosphates and nitrates in lakes and ponds leads to

A. Reduce algal growth B. Eutrophication C. Nutrient enrichment D. Both 2 & 3

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Deforestation has an alarming effect on

A. Soil erosion B. increase in grazing area C. weed control D. all of these

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Which is the main factor of water pollution?

A. Ammonia B. Smog C. detergents D. None of these

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Which one of these has highest levels of DDT deposition?

A. Eel B. Phytoplanktonâ€™s C. Sea gull, Eagle D. Crab

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The stress reaction is caused by

A. Air pollution B. Nuclear pollution C. Water pollution D. Noise pollution

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Deforestation mayreduce the chances ofâ€¦. (CBSE1990)

A. Rainfall B. Frequent cyclones C. Erosion of surface soil D. Frequent landslide

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Most severe environmental hazard to mankind is due toâ€¦. (DPMT1986)

A. Air pollution B. Radioactive pollution C. Water pollution D. Noise pollution

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Which is biodegradable pollutant?

A. Mercury salts B. Polythene bags C. Domestic sewage D. Aluminum canes

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