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Question

Match the column I with column II

COLUMN I

COLUMN II

A.

Ozone thickness

i.

UV rays

B.

CFC

ii.

Refrigerator

C.

El Nino effect

iii.

Temperature increase

D.

Skin cancer

iv.

Dobson unit


A
A- i, B- ii, C-iii, D-iv
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B
A- ii, B- iii, C-iv, D-i
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C
A- iv, B- ii, C-iii, D-i
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D
A- iii, B- iv, C-ii, D-i
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Solution

The correct option is C A- iv, B- ii, C-iii, D-i
Dobson is a measure of the thickness of ozone. One Dobson unit is defined as the thickness of 0.01mm of ozone at standard temperature and pressure.
Chlorofluorocarbons or CFCs are gases emitted by refrigerators and air conditioners. These are responsible for ozone depletion and ozone hole formation.
El nino effect is the periodic development of warm ocean currents which leads to an increase in sea surface temperatures.
Skin cancer is caused due to over exposure to Ultra Violet radiations.

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