Tag: weather, climate and adaptations of animals to climate

Questions Related to weather, climate and adaptations of animals to climate

The $CO _{2}$ content by volume, in the atmospheric air is about

  1. 3.34%

  2. 4%

  3. 0.0314%

  4. 2.1%.


Correct Option: C
Explanation:

The carbon dioxide present in the atmosphere is generally the result of respiration by animals during the day and the emissions by various vehicles, industries and machines. All these activities account for a total of approximately 0.04% CO2 in the atmospheric air.

So, the correct answer is '0.0314%'.

Ozone is formed in stratosphere by action of ultravoilet radiations on oxygen.

  1. True

  2. False

  3. Either

  4. Neither


Correct Option: A
Explanation:
Ozone (O3) molecule is made up of three oxygen atoms. It is formed in the stratosphere when single oxygen atom combines with a molecule of oxygen i.e. when [O] combines with O2. Oxygen molecule consisting of two oxygen atoms splits into atomic oxygen in the presence of ultraviolet radiation. The atomic oxygen then combines with another molecule of oxygen to form ozone.
The reactions are as follows:
      UV light
O2 ---------------> [O] + [O]
[O] + O2 ---------->O3
Hence, the statement given in the question is correct.
So, the correct answer is 'True'.

Closest atmospheric layer to earth's surface is known as

  1. Boundary Layer

  2. Atmosphere

  3. Biosphere

  4. Hydrosphere


Correct Option: A

What is lower layer of atmosphere called?

  1. Ionosphere

  2. Mesosphere

  3. Troposphere

  4. Stratosphere


Correct Option: A

The earth's atmosphere is divided into layers based on the vertical profile of:

  1. Air pressure

  2. Air temperature

  3. Air density

  4. Wind speed


Correct Option: B

The lowermost layer of the atmosphere is 

  1. Stratosphere

  2. Lithosphere

  3. Troposphere

  4. Mesosphere


Correct Option: C

In which layer of atmosphere rainbow formation occurs?

  1. Mesosphere

  2. Stratosphere

  3. Ionosphere

  4. Troposphere


Correct Option: D

Which of the following layer of atmosphere receives an extraordinary amount of energy from the sun?

  1. Stratosphere

  2. Ionosphere

  3. Mesosphere

  4. None of the above


Correct Option: B

PAN is

  1. poisonous american nuisance

  2. primary air pollutant

  3. photochemical oxidant

  4. particulate atmospheric nitrogen compound


Correct Option: D
Explanation:

PAN (Peroxyacytyl nitrate) is a toxic chemical that is an important component of smog.PAN molecules are generally composed of carbon, hydrogen, oxygen, and nitrogen atoms.

So the correct answer will be 'PARTICULATE ATMOSPHERIC NITROGEN COMPOUND'.