Tag: physical resources

Questions Related to physical resources

In absence of Green House Gases, the temperature of Earth shall fall down to ___

zoology physical resources carbon cycle ozone layer depletion and causes depletion of ozone layer

  1. -18 degree Celcius

  2. -15 degree Celcius

  3. -20 degree Celcius

  4. -10 degree Celcius

Show answer
Correct Option: A
Explanation:

Because Green House Gases are responsible to trap heat in earth surface. If green house gases are absent, the temperature of Earth shall fall down to -18 degree Celcius

So, the correct answer is '-18$^0$

Correct percentage of two green house gases is

zoology physical resources carbon cycle ozone layer depletion and causes depletion of ozone layer

  1. $N _2O-6\%, CO _2-86\%$

  2. $CH _4-20\%, N _2O-18\%$

  3. $CO _2-40\%, CFC-30\%$

  4. $CFC-14\%, CH _4-20\%$

Show answer
Correct Option: D
Explanation:
The warming of earth's surface when sun radiations are absorbed and trapped in earth's atmosphere, is called greenhouse effect. The gases responsible for green house effect are called green house gases which trap the radiations and don't let them reflect back from the earth's surface. The green house gases are Chlorofluorocarbons (CFC's), Carbon dioxide (CO2), Methane (CH4) and Nitrous Oxide (N2O). 
The approximate percentage of different greenhouse gases in the atmosphere is:
CFCs - 14%
CO2 - 60%
‎CH4 - 20%
N2O - 6%
So, the correct answer is 'CFC−14%, CH4 - 20%