UV rays are highly injurious to living organisms

(1) Because DNA and Protein preferentially refract UV light

(2) Because DNA and Protein preferentially radiate UV light in the form of heat energy

(3) Because DNA and Protein preferentially absorb UV light and as a result chemical bonds are broken

(4) Both B and C

Subtopic:  Ozone Layer Depletion |
 72%
From NCERT
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In stratosphere

Find the wrong one out

(1) Ozone is formed by the action of UV rays on molecular Oxygen

(2) Ozone is degraded there

(3) There is a balance between formation and degradation of ozone

(4) There will be accumulation of Chlorofluorocarbons or CFCs which are acted upon by UV rays and protects the ozone layer.

Subtopic:  Ozone Layer Depletion |
 73%
From NCERT
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CFCs

Find the wrong one out.

(1) Release Cl atoms in stratosphere

(2) Used as refrigerant

(3) Cl of CFCs degrade ozone releasing molecular oxygen

(4) Cl atoms released out of CFCs are also used up during degradation of Ozone

Subtopic:  Ozone Layer Depletion |
 69%
From NCERT
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Over Antarctica region, the ozone hole is

(1) Due to no formation of Ozone

(2) Due to high formation and low degradation of ozone

(3) Due to low formation and high degradation of ozone

(4) Due to no degradation of ozone

Subtopic:  Ozone Layer Depletion |
 86%
From NCERT
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UV-B

(1) Damages DNA and causes mutation

(2) Ageing of skin and damage to the skin cells and cause various types of skin cancer

(3) Inflammation of cornea, cataract

(4) All of these

Subtopic:  Ozone Layer Depletion |
 95%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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Snow Blindness and cataract is caused by

(1) UV-A

(2) UV-B

(3) UV-C

(4) All of these

Subtopic:  Ozone Layer Depletion |
 92%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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Soil Erosion and desertification least likely resulted in which of the following cases?

(1) Over Cultivation

(2) Unrestricted Grazing

(3) Deforestation, Poor Irrigation Practices

(4) Proper resource Utilization and Maintenance

Subtopic:  Resource Utilisation & Maintenance |
 64%
From NCERT
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Which of the following have come into wake of the green revolution?

(1) Organic Farming

(2) Water logging

(3) Soil salinity

(4) Both 2 and 3

Subtopic:  Agrochemical & Radioactive Waste |
 69%
From NCERT
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Find the wrong one out.

(1) Due to increased urbanisation, desertification is the major problem.

(2) Irrigation without proper drainage of water leads to waterlogging in the soil, affects the crops

(3) Waterlogging affects the crops and hence the agriculture

(4) Waterlogging cause salt to go downwards

Subtopic:  Resource Utilisation & Maintenance |
 79%
From NCERT
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According to an estimate, almost…….

Forests have been lost in the tropics compared to  only …… in  the temperate regions.

(1) 20%, 10%

(2) 60%, 12%

(3) 40%, 1%

(4) 30%, 2%

Subtopic:  Resource Utilisation & Maintenance |
 69%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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