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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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Jhum refers to.

A. Crop Cultivation B. Social forestry C. Shifting cultivation D. Large scale agriculture

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Ultraviolet radiation from sunlight causes a reaction that produces

Fluorides

SO₂

Ozone

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The biological amplification of DDT in various tropic levels is known as

A. Eutrophication B. Global warming C. Biological bloom D. Biological magnification

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BOD is related to

A. Detergents B. Inorganic pollutants C. Organic pollutants D. Organo phosphorus

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CFCâ€™s splits up in stratosphere to release chlorine by the action of..

A. UVA B. UVB C. UVC D. all of these

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If there was no CO₂in the earth’s atmosphere, the temperature of earth’s surface would be. CBSE1995

Dependent on amount of O2 in the atmosphere

Higher than present

Less than present

The same

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With the help of Electrostatic precipitators how much particulate pollutants can be removed?

A. 50% B. 99% C. 40% D. 100%

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Enrichment of a water body with organic waste results in sudden algal bloom. This phenomenon is known as

Eutrophication

Aqua bloom

Biological bloom

Biological magnification

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Explanation

Eutrophication is the natural aging of a lake by nutrient enrichment of its water

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Which of the following is mismatched?

A. Fossil fuel burning - Release of COd₂d B. Nuclear power station - Radioactive waste C. Solar energy â€“ Green house effect D. Biomass combustion â€“ Release of CHd₄d

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Soil conservation can be best achieved by having

Wind screen

Good plant cover

Restricted human activity

Low rain fall

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Explanation

Planting more trees in the areas will prevent soil erosion.

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