Tag: allotropy of oxygen

Quizzes (2) Questions (29)

Questions Related to allotropy of oxygen

Multiple choice zoology allotropy of oxygen ozone - a case study stratospheric pollution ozone and its depletion

In antarctica, ozone depletion is due to the formation of which of the following compounds?

  1. Acrolein

  2. PAN

  3. PCBs

  4. Chlorine nitrate
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ozone layer depletion is caused due to CFC's. So, chlorine nitrate, which is found in the stratosphere causes break down of the ozone layer. Chlorine is highly reactive and it interacts with ozone and hence destroys the ozone layer.

Multiple choice zoology allotropy of oxygen ozone - a case study stratospheric pollution ozone and its depletion

In Antarctica ozone depletion is due to the formation of following compound.

  1. Acroline

  2. Chlorine nitrate

  3. Formyldehyde
  4. $SO _3$ and $SO _2$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The severe depletion of the Antarctic ozone layer known as the ozone hole occurs because of the special atmospheric and chemical conditions that exist there and nowhere else on the globe. The very low winter temperatures in the Antarctic stratosphere cause polar stratospheric clouds (PSCs) to form. These clouds contain Chlorine nitrate $(ClNO _3)$

Option (B) is correct.

Multiple choice zoology allotropy of oxygen ozone - a case study stratospheric pollution ozone and its depletion

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

  1. pesticides

  2. atomic explosions

  3. aerosols and high flying jet

  4. balloons
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ozone layer of stratosphere require protection from indiscriminate use of aerosols and high flying jet because they produce gases which react with ozone layer and depletion of ozone occurs.

Multiple choice zoology allotropy of oxygen ozone - a case study stratospheric pollution ozone and its depletion

The proposal to ban supersonic jet planes in
Russia is because
A) They travel with very high speed.
B) It is dangerous to travel in them.
C) Their exhaust gases react with ozone.

  1. A & B

  2. B

  3. C

  4. A, B & C
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The proposal to ban supersonic jet planes in Russia is because of toxic gases which reacts with ozone layer and damage it.

Multiple choice zoology allotropy of oxygen ozone - a case study stratospheric pollution ozone and its depletion

Result of ozone hole is:

  1. green house effect

  2. global warning

  3. acid rain

  4. UV rays reach the earth
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
The depletion of ozone layer is due to the increase in emissions of chlorine and bromine-contained  compounds like CFC's, methyl chloroform and methyl bromide.
Emissions of green gases affects ozone by atmospheric interaction.
As a result, U.V. rays reach the earth's atmosphere and causes skin cancer, and damages living and non-living things.
Multiple choice zoology allotropy of oxygen ozone - a case study stratospheric pollution ozone and its depletion

Which of the following statement is wrong?

  1. Ozone is not responsible for green house effect

  2. Ozone can oxidise sulphur dioxide present in the atmosphere to sulphur trioxide

  3. Ozone hole is thinning of ozone layer present in stratosphere

  4. Ozone is produced in upper stratosphere by the action of UV rays on oxygem
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ozone is a greenhouse gas that absorbs and emits radiant energy within thermal infrared range. The increase in ozone in the troposphere because of surface pollution gases have increased the warming effect on the earth's surface and contributed to a greenhouse effect.

Multiple choice zoology allotropy of oxygen ozone - a case study stratospheric pollution ozone and its depletion

In the upper layers of atmosphere, ozone is formed ?

  1. By action of electric discharge on oxygen molecules

  2. By action of ultraviolet rays on oxygen molecules

  3. By action of infrared rays on oxygen molecules

  4. Due to sudden drop of pressure
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • In the upper layer of atmosphere, the Ultraviolet rays (UV rays) split the molecule of oxygen $(O _2)$ into its constituent 2 atoms.
  • Each of the atom then combine with another oxygen $(O _2)$ molecule which gives rise to Ozone$(O _3)$.
  • Hence option B is correct answer.