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BITSAT 2013
Exam
BITSAT
Year
2013
Subject
Chemistry
Chapter
Environmental Chemistry

BITSAT 2013 · Chemistry · Environmental Chemistry

The greenhouse effect is because of the

The greenhouse effect is because of the

Options

  1. Apresence of gases, which in general are strong infrared absorbers, in the atmosphere.
  2. Bpresence of CO2\mathrm{CO}_{2}, only in the atmosphere.
  3. Cpresence of O3\mathrm{O}_{3} and CH4\mathrm{CH}_{4} in the atmosphere.
  4. DN2O\mathrm{N}_{2} \mathrm{O} and chlorofluorohydrocarbons in the atmosphere.

Correct answer

A. presence of gases, which in general are strong infrared absorbers, in the atmosphere.

Step-by-step solution

Green house gases such as CO2\mathrm{CO}_{2}, ozone, methane, the chlorofluoro carbon compounds and water vapour form a thick cover around the earth which prevents the IR rays emitted by the earth to escape. It gradually leads to increase in temperature of atmosphere.
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