Ozone Layer Depletion

Q.

The ozone layer protects us from harmful _______ rays of the sun.

1. Red

2. Ultra violet

3. Yellow

4. Purple

Q.

15. Ozone hole is the largest over

1. Africa

2. Antarctica

3. Europe

4. Australia

Q. Choose the correct options regarding the statements given below:
Statement-1: Ozone present in the lower parts of atmosphere is not harmful for animals.
Statement-2: Ozone present in the stratosphere is harmful for animals.

1. Both statements are correct.
2. Both statements are incorrect.
3. Statement-1 is correct and statement-2 is incorrect.
4. Statement-1 is incorrect and statement-2 is correct.

Q.

The ozone layer protects the life on earth from the harmful effects of UV radiations by absorbing them.

1. True

2. False

Q.

Ozone is present in the upper layer of the atmosphere called the ___ .

1. Troposphere

2. Stratosphere

3. Thermosphere

4. Exosphere

Q.

What if earth had no ozone layer?

Q.

Which among the following is responsible for the depletion of ozone layer?

1. Chlorofluorocarbons

2. Carbon dioxide gas

3. Sulphur dioxide gas

4. Nitrogen gas

Q. State harmful effects of depletion in Ozone layer?

Q.

Do air protect us from UV rays

Q. The pollutants released from air conditioners and refrigerators affect layer.

1. sulphur
2. nitrogen
3. ozone
4. carbon

Q.

The ${16}^{th}$ of ___ is celebrated as 'ozone protection day'.

1. September

2. October

3. November

4. January

Q.

The use of chemicals like CFCs has endangered the _________ layer.

Q. Ozone protects the Earth from ultraviolet rays.

1. True
2. False

Q.

…….Protect us from harmful ultraviolet rays of sun.

Q. Mention the harmful effect caused due to depletion of ozone layer that is Bio-amplification?

Q.

What would happen if the ozone layer in the atmosphere disappears?

Q. Ozone deplete due to the formation of following compound in antartica?

1. Chlorine nitrate
2. $S{O}_2$ and $S{O}_3$
3. peroxy acetyl nitrate
4. Acrolein

Q. Free radicals of which of the following compounds are responsible for causing break down of ozone into oxygen due to use of CFCs?

1. O
2. Cl
3. $C{H}_3$
4. OH

Q. What is ozone hole and how is it caused?

Q.

Which day is celebrated as 'International Ozone Day'?

1. October 21

2. September 30

3. September 16

4. March 20

Q.

what are the effects of radiation?

Q. Cataract and skin cancer are caused by __________.

1. depletion of nitric oxide
2. depletion of ozone layer
3. increase in methane
4. depletion of nitrous oxide

Q. Ozone layer of stratosphere requires protection from indiscriminate use of ____________ .

1. pesticides
2. atomic explosions
3. aerosols and high flying jet
4. balloons

Q. Which one of the following can cause depletion of ozone?

1. $H_{2}S$
2. $NO$
3. Smoke
4. Aqua sols

Q. Which of the following statements about the depletion of ozone layer is correct?

1. Oxides of nitrogen also do not react with ozone in stratosphere.
2. The problem of ozone depletion is less serious at poles because $N{O}_2$ solidifies and is not available for consuming $ClO$ radicals.
3. Freons, chlorofluorocarbons, are inert chemically, they do not react with ozone in stratosphere.
4. The problem of ozone depletion is more serious at poles because ice crystals in the clouds over poles act as catalyst for photochemical reactions involving the decomposition of ozone by $Cl$ and $ClO$ radicals.

Q. Chlorofluorocarbons are effective scavengers for ozone due to:

1. photolytic reaction of $O_2$ producing $Cl$ radicals
2. photolytic decomposition of $O_3$ producing $O_2$
3. photolytic production of oxides of nitrogen
4. photolytic reaction of $O_3$ and $CFCs$