Ozone Depletion

Q.

Choose the incorrect statement from the following.

1. Ozone is a molecule formed by three atoms of Oxygen.

2. Ozone shields the surface of the Earth from ultraviolet radiation.

3. Ozone is deadly poisonous.

4. Ozone gets decomposed by UV radiation.

Q.

Depletion in the Ozone layer is caused by

1. Carbon dioxide

2. Methane

3. Carbon dioxide

4. Chlorofluorocarbon

Q.

Ozone layer depletion can severely affect the marine ecosystem.

1. True

2. False

Q.

Assertion [A]: UV radiation damages to the ozone layer.
Reason [R]: The ozone hole has been the major cause of global warming and climate change.

1. Both assertion and reason are true and the reason is the correct explanation for assertion
2. Both assertion and reason are true but the reason is not the correct explanation for the assertion
3. Both assertion and reason are false
4. Assertion is true but reason is false

Q. State whether true or false:
A single chloride ion while rising through the ozone layer, can destroy tens of thousands of ozone molecules before exiting out of the stratosphere.

1. False
2. True

Q.

Which of the following gases deplete the ozone layer?

1. Chlorofluorocarbons

2. Methane

3. Carbon monoxide

4. CO2

Q.

By 2011, scientists have been able to identify three separate holes in the Ozone layer. One in Tibet, one in the North Pole and one in Antarctica. The size of these ozone holes were calculated using the Dobson Meter and measured in Dobson units.

1. True
2. False