MEDIUM
Earn 100

What causes ozone depletion?

Important Questions on Physical and Chemical Changes

EASY
Science>Chemistry>Physical and Chemical Changes>Chemical Changes
The following very short answer type question of 2 marks each may be answered in a few words or few sentences or as may be required:
What are the causes of ozone layer depletion?
EASY
Science>Chemistry>Physical and Chemical Changes>Chemical Changes
Name the solar radiation from which the surface of the earth is shielded by ozone layer.
EASY
Science>Chemistry>Physical and Chemical Changes>Chemical Changes
Which among the following gases absorb long wavelength infrared radiation emitted from the earth’s surface?
EASY
Science>Chemistry>Physical and Chemical Changes>Chemical Changes
If the amount of pollen grains, fungal spores and dust particles increase suddenly in the air, decide which of the following problems may increase
MEDIUM
Science>Chemistry>Physical and Chemical Changes>Chemical Changes
What is ozone and how does it affect ecosystem?
EASY
Science>Chemistry>Physical and Chemical Changes>Chemical Changes
Among the following four terms, one includes the other three. Find it out and write it. SPM, Air pollution, Greenhouse gas, Lung disease
EASY
Science>Chemistry>Physical and Chemical Changes>Chemical Changes
Which of the following is NOT a greenhouse gas?
MEDIUM
Science>Chemistry>Physical and Chemical Changes>Chemical Changes
Which wavelength of harmful UV-radiations is prevented by the ozone layer from entering the Earth's atmosphere?
MEDIUM
Science>Chemistry>Physical and Chemical Changes>Chemical Changes

Give reason:

Protecting of ozone layer is necessary.

MEDIUM
Science>Chemistry>Physical and Chemical Changes>Chemical Changes

Science teacher Mamtaben gives certain statements regarding the importance of the ozone layer. Which statement is totally correct?

(i) Troposphere is not the nearest layer from the earth.

(ii) At a height of 50km in the stratosphere, the ozone layer is located.

(iii) Ozone is a mixed layer of all gases.

(iv) Ozone acts as an umbrella for humans.

(v) Ozone layer is harmful to living organisms.

MEDIUM
Science>Chemistry>Physical and Chemical Changes>Chemical Changes
Which of the following is responsible for green house effect?
EASY
Science>Chemistry>Physical and Chemical Changes>Chemical Changes
Which one of the following is a Greenhouse gas?
EASY
Science>Chemistry>Physical and Chemical Changes>Chemical Changes
Which factor is responsible for green house effect?
EASY
Science>Chemistry>Physical and Chemical Changes>Chemical Changes
Which of the following greenhouse gases has the maximum contribution towards global warming?
EASY
Science>Chemistry>Physical and Chemical Changes>Chemical Changes
Which is responsible for increases in global temperature?
MEDIUM
Science>Chemistry>Physical and Chemical Changes>Chemical Changes
The most important compound which accounts for almost 80% of the total depletion of ozone layer is 
MEDIUM
Science>Chemistry>Physical and Chemical Changes>Chemical Changes
Explain in brief how the ozone layer is getting depleted.
HARD
Science>Chemistry>Physical and Chemical Changes>Chemical Changes
Write the essential function performed by ozone at the higher levels of the Earth’s atmosphere? How is it produced? Name the synthetic chemicals mainly responsible for the drop of the amount of ozone in the atmosphere. How can the use of these chemicals be reduced?
EASY
Science>Chemistry>Physical and Chemical Changes>Chemical Changes
Define chemical changes.
MEDIUM
Science>Chemistry>Physical and Chemical Changes>Chemical Changes
When baking soda is mixed with lemon juice, bubbles are formed with the evolution of a gas. What type of change is it?