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Test: Air pollution - JEE MCQ


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20 Questions MCQ Test Chemistry for JEE Main & Advanced - Test: Air pollution

Test: Air pollution for JEE 2024 is part of Chemistry for JEE Main & Advanced preparation. The Test: Air pollution questions and answers have been prepared according to the JEE exam syllabus.The Test: Air pollution MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Air pollution below.
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Test: Air pollution - Question 1

Which of the following statement is false?

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London smog is reducing in nature.

Test: Air pollution - Question 2

Which of the following pollutants is not emitted during volcanic eruptions?

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Hydrocarbons are not emitted during volcanic eruptions.

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Test: Air pollution - Question 3

Among the following compounds, which one is not responsible for depletion of ozone layer?

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In stratosphere the following reactions takes place which are responsible for depletion of ozone layer.
Hence, methane is not responsible for ozone layer depletion.

Test: Air pollution - Question 4

Acid rain is caused by the presence of X and Y in air. X, Y are respectively

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Acid rain is caused by chemical reaction that begins when compounds like sulphur dioxide (SO2) and nitrogen dioxide (NO2) are released into the air. There substances can rise very high into the atmosphere, where they mix and react with water, oxygen and other chemicals to form more acidic pollutants, known as acid rain.

Test: Air pollution - Question 5

Which of the following is/are the hazardous pollutant(s) present in automobile exhaust gases?
(i) N2
(ii) CO
(iii) CH4
(iv) Oxides of nitrogen

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CO and oxides of Nitrogen are poisnous gases present in automobile exhaust gases.

Test: Air pollution - Question 6

Ultraviolet radiation is absorbed by

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UV radiations are absorbed in stratosphere.

Test: Air pollution - Question 7

The false statement among the followings:

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The average residence time of NO is 4 days.

Test: Air pollution - Question 8

The pair of gases responsible for acid rain are

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Oxides of nitrogen and sulphur are responsible for acid rain.

Due to the presence of HNO3 and H2SO4 (strong acids) rain water becomes acidic and rain is called the acid rain.

Test: Air pollution - Question 9

Photochemical smog consists of excessive amount of X , in addition to aldehydes, ketones, peroxyacetyl nitrate (PAN), and so forth X is :

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Chemical pollutants in photochemical smog are nitrogen oxides (NO and NO2), volatile organic compounds, ozone (O3) and peroxyacetyl nitrate.

Test: Air pollution - Question 10

The region which is greatly affected by air pollution is

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Air pollution greatly affect the troposphere.

Test: Air pollution - Question 11

The substance having the largest concentration in acid rain?

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Acid rain contains H2SO4 > HNO3 > HCl.

Test: Air pollution - Question 12

Which of the following is not a greenhouse gas?

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Greenhouse gases in Earth's atmosphere are water vapour, CO, methane, nitrous oxide and ozone. Thus, nitrogen is not in greenhouse gas.

Test: Air pollution - Question 13

Which forms the part of hazy fumes of photochemical smog?

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SO2 forms a part of photochemical smog.

Test: Air pollution - Question 14

CFCl3 is responsible for the decomposition of ozone to oxygen. Which of the following reacts with ozone to form oxygen?

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CFC (Chlorofluorocarbons) are causing depletion of ozone in the stratosphere. This occurs because ultra violet light also causes CFC's to decompose, producing atomic chlorine. The chlorine atoms react with ozone molecules, resulting in a net removal of O3 molecules from the stratosphere.

Test: Air pollution - Question 15

Which of the following chemical, harmful to ozone, is released by chlorofluorocarbon?

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Test: Air pollution - Question 16

Which of the following forms holes in the ozone layer?

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Chlorofluoro carbons (CFCs) such as , , hydrofluoro carbons (HFCs) are responsible for ozone layer depletion or ozone holes.

Test: Air pollution - Question 17

Ozone is an important constituent of stratosphere because it

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Ozone absorbs U. V. radiations harmful to human life.

Test: Air pollution - Question 18

Green house gases

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Radiation coming from sun or outerspace have high energy or short wavelength, which are allowed to enter by green house gases. However, radiation emitted by earth is in infrared region, having long wavelength, are reflected back by the envelope of green house gases.

Test: Air pollution - Question 19

The greenhouse effect is because of the

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Green house gases such as CO2, ozone, methane, the chlorofluorocarbon 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.

Test: Air pollution - Question 20

Carbon monoxide (CO) is harmful to man because

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CO is highly toxic and impairs respiration. CO combines with haemoglobin of blood and reduces its O2 carrying capacity.

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