The acids formed in the process of acid rain are _____ .

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In the atmosphere, industrial gases and automobile waste gases thrown into the air get absorbed by the moisture and form sulphuric acid and nitric acid, which is the cause for acid rain. Carbonic acid and Nitrous acid are unstable acids which decompose into their respective oxides (CO2 and NO2).

Water is often treated with chlorine to

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Water is often treated with Cl2 to kill germs.

Sewage mostly constitutes

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Domestic sewage constitute biodegradable pollutants.

Sea water is most contaminated by the pollution of ____.

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Sea water is most polluted by oil spills.

Poor management of waste causes health problems, leading to epidemics due to contamination of ____.

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Poor management of waste causes health problems, leading to epidemics due to contamination of ground water. Ground water is the source of water for all domestic purposes like cooking, drinking, etc. which is a carrier of epidemic.

The substance having the largest concentration in acid rain?

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Acid rain contains H2SO4>H2CO3>HNO3 >HCl.

PAN stands for ____.

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PAN is an abbreviation for PEROXY ACETYL NITRATE - CH3 (CO) OO NO2.

The type of pollution caused by spraying of DDT

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DDT causes water, air and soil pollution.

The biggest particulate matter is

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Fly ash.

The substance which is not regarded as pollutant?

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CO2 is generally not regarded as pollutant.

The substance which is a primary pollutant?

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CO is primary pollutant.

Photochemical smog can be controlled by growing plants like ____ .

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Many techniques are used to control or reduce the formation of photochemical smog. If we control the oxides of nitrogen and hydrocarbons, which are the primary precursors and then control the seconadry precursors like PAN and ozone, then photochemical smog can be reduced. Plants like pinus, junkiparus, pyrus and vitas can metabolise nitrogen oxide.

The reaction caused by U.V. radiations from sun produces

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O2 → O + O; O + O2 → O3

The growth of fish gets inhibited when the concentration of oxygen in water is below ____ .

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The growth of fish is inhibited when the concentration of oxygen in water is less than 6 ppm.

Many of the anti-biotics are produced by using suitable ____ in the reaction.

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In the production of anti-biotics, suitable enzymes are used to promote the reaction.

Water pollution is caused by

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Pesticides cause water pollution.

The region containing water vapour is

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Troposphere contains water vapour.

____ methods can reduce the use of pesticides and thereby minimize soil pollution.

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Biological methods can reduce the use of pesticides and thereby minimise soil pollution. Other methods produce some toxic chemical by-products which may cause air, water or soil pollutants.

Depletion of ozone layer causes

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Depletion of ozone layer causes skin cancer.

The green house effect is caused by

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CO2 causes Green House Effect.

Depletion of ozone layer can be prevented by ____ .

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Option A , C and D would not cause any remedy to prevent depletion of ozone layer instead it would increase due to more of global warming and waste gases thrown into the atmosphere. But forestation would reduce the depletion because plants would produce more of oxygen into the atmosphere and consume carbon dioxide, reducing the global warming.

____is produced by a reaction of ultraviolet light rays.

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In the presence of UV light, oxygen is converted to ozone in the stratosphere.

The Global Textile Market is soon to recycle____ into clothes.

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The Global Textile Market is soon to recycle plastic waste into clothes.

The viable particulate among the following is

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Algae.

In which of the following regions hydrogen and helium are found

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H2, He and ionic oxygen are present in exosphere.

____are the main source of soil pollution, which are the root cause for pathogenic bacteria and virus.

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Farm wastes are the main source of soil pollution, which are the root cause for pathogenic bacteria and virus.

The non-viable particulate among the following is

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Dust

The region which is greatly affected by air pollution is

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Air pollution greatly affect the troposphere.

Select the one that has an adverse effect on ozone layer.

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They create holes in ozone layer.

Which of the following causes lung cancer?

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Textiles cause lung cancer.

Class 11th Chemistry - 14 Environmental Chemistry MCQs
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Class 11th Chemistry - 14 Environmental Chemistry MCQs