Atmospheric Pollution Exe-8D Very Short Answer Chemistry Class-9 ICSE Selina Publishers

Atmospheric Pollution Exe-8D Very Short Answer Chemistry Class-9 ICSE Selina Publishers Solutions Chapter-8. Step By Step ICSE Selina Concise Solutions of Chapter-8 Atmospheric Pollution with All Exercise including MCQs, Very Short Answer Type, Short Answer Type, Long Answer Type, Numerical and Structured/Application Questions Solved . Visit official Website CISCE for detail information about ICSE Board Class-9.

Atmospheric Pollution Exe-8D Very Short Answer Chemistry Class-9 ICSE Concise Selina Publishers

Board ICSE
Publications Selina Publication
Subject Chemistry
Class 9th
Chapter-8 Atmospheric Pollution
Book Name Concise
Topics Solution of Exercise – 8D Very Short Answer Type (Ozone)
Academic Session 2023-2024

D. Exercise – 8D Very Short Answer Type

Atmospheric Pollution Class-9 Chemistry Concise Solutions  

Page-144

Question 1.

Fill in the blanks:

(a) The pollutants such as NO2, SO2 and SO3 dissolved in the moisture of air are the cause of ……………

(b) Excessive release of carbon dioxide in the atmosphere is the cause of …………… effect which produces global warming.

(c) Ozone layer prevents the harmful …………… radiation of the sun to reach the earth.

(d) Decrease in the concentration of ozone in the stratosphere is the cause of the formation of …………… holes.

(e) Ozone depletion is mainly caused by the active …………… atoms generated from CFC in the presence of UV radiation.

Answer:

(a) The pollutants such as NO2, SO2 and SO3 dissolved in the moisture of air are the cause of acid rain

(b) Excessive release of carbon dioxide in the atmosphere is the cause of greenhouse effect which produces global warming.

(c) Ozone layer prevents the harmful ultraviolet radiation of the sun to reach the earth.

(d) Decrease in the concentration of ozone in the stratosphere is the cause of the formation of ozone holes.

(e) Ozone depletion is mainly caused by the active chlorine atoms generated from CFC in the presence of UV radiation.

Question 2.

Name any two :

(a) natural sources of atmospheric pollution.

(b) gases which are responsible for the formation of acid rain.

(c) particulate pollutants.

Answer:

(a) Volcanic eruptions, Decaying vegetation.

(b) Sulphur dioxide, Nitrogen dioxide.

(c) Dust, Smoke.

Question 3.

State two effects of ozone depletion.

Answer:

Depletion of ozone layer allows the ultraviolet rays of the Sun to reach the Earth. The harmful effects of these ultraviolet rays are :

They cause skin cancer.
They destroy many organisms necessary for life in general.

—  : End of Atmospheric Pollution Exe-8D Very Short Answer Class-9 ICSE Chemistry Solutions :–

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