Saleha Pervez, Mansi Garg and, Poonam Singh Solutions for Chapter: Environmental Chemistry, Exercise 1: Self Check

Acid rain is caused by the pollution of environment by _____.

The increasing amount of carbon dioxide in the air is slowly raising the temperature of the atmosphere because it absorbs _____.

Consider the following statements.

Chlorofluorocarbons known as ozone-depleting substances, are used:

1. in the production of plastic foams.

2. in the production of tubeless tyres.

3. in cleaning certain electronic components.

4. as pressurizing agents in aerosol cans.

Which of the statement(s) given above is/are correct?

The jet aircraft fly very easily and smoothly in the lower stratosphere. What could be the appropriate explanation?

$1$. There are no clouds or water vapor in the lower stratosphere.

$2$. There are no vertical winds in the lower stratosphere.

Which of the statements given above is/are correct?

Human activities in the recent past have caused an increased concentration of carbon dioxide in the atmosphere, but a lot of it does not remain in the lower atmosphere because of:
$1.$ its escape into the outer stratosphere.
$2.$ the photosynthesis by phytoplankton in the oceans.
$3.$ the trapping of air in the polar ice caps.

Which of the statements given above is/are correct? Select the correct answer using the codes below.

Recently 'oil zapper' was in the news. What is it?

The formation of ozone hole in the Antarctic region has been a cause of concern. What could be the reason for the formation of this hole?

Consider the following statements

1. Ultraviolet rays coming from Sun causes skin cancer.

2. Carbon monoxide is harmful to human beings as it is with higher affinity for hemoglobin as compared to oxygen.

3. Taj Mahal is threatened by pollution from sulphur dioxide.

4. BOD is Biological Oxygen Demand.

Which of the statements given above is/are correct?