Exercise 7

Which gas is responsible for the depletion of the ozone layer around the earth which protect us from harmful ultraviolet rays?

Ozone layer is found in between which of the following layers in the atmosphere?

Which of the following destroys the ozone layer?

In India, heat waves are rising due to climate change and related factors.
Regarding 'heat waves; consider the following statements:
$1$. It is a period of abnormally high temperatures, more than the maximum temperature.
$2$. It occurs when low atmospheric pressure moves into an area.
$3$. In India, it occurs between March and June.
Which of the statements given above is/are correct?

With reference to the ozone, which of the following statements are correct?
1. The stratospheric ozone layer is a single layer of pure ozone.
2. At ground level, Ozone acts as a harmful pollutant that can cause damage to lung tissue and plants.
3. The most common unit for measuring ozone concentration is Dobson Unit.
Select the correct answer using the codes given below:

Consider the following statements related to the stratification of atmospheric layers.

$1$. All storms and cloudiness are restricted to the troposphere.

$2$. Cirrus clouds are formed on the top layers of the troposphere.

$3$. Ozone layer is found in Exosphere.

Which of the statements given above are correct?

Depletion of ozone layer causes

Depletion of ozone layer causes