Environmental Science MCQs

Question 1

Which one of the following is the correct percentage of the two green house gases that contribute to the total global warming?

Accepted Answer

Methane-20%, N 2 O-18%

Answer

N 2 O-6%, CO 2 -86%

Answer

CFCs -14%, Methane-20%

Answer

CO 2 -40%,CFCs-30%

Question 2

Lead poisoning

Accepted Answer

reduces O 2 carrying capacity of hemoglobin in blood

Answer

increases O 2 carrying capacity of hemoglobin in blood

Answer

reduces O 2 carrying capacity of myoglobin in muscles

Answer

increases O2 carrying capacity of myoglobin in muscles

Question 3

One greenhouse gas contributes 14% to total global warming and another contributes 6%. These are respectively identified as

Accepted Answer

CFCs and N 2 O

Answer

N 2 O and CO 2

Answer

Methane and CO 2

Answer

Methane and CFCs

Question 4

Frost forms when:

Accepted Answer

All of the above

Answer

Objects on the ground cool below the dew point temperature.

Answer

The dew point is 32 o F or below.

Answer

Water vapor changes into ice without first becoming a liquid.

Question 5

Nitrogen oxide and hydrocarbons released by automobiles interact to form

Accepted Answer

PAN

Answer

CO

Answer

SO 2

Answer

Aerosol

Question 6

Of the gases listed below, which is not believed to be responsible for enhancing the earth's greenhouse effect?

Accepted Answer

Molecular oxygen (O 2 )

Answer

Chlorofluorocarbons (CFC s )

Answer

Nitrous oxide (N 2 O)

Answer

Carbon dioxide (CO 2 )

Question 7

In a photochemical smog, which gas is an eye and mucous membrane irritant?

Accepted Answer

N 2 O

Answer

SO 2

Answer

O 3

Answer

CO 2

Question 8

The horizontal extent of the ozone hole can sometimes exceed the size of the Antarctic continent.

Accepted Answer

True

Answer

False

Answer

Option text not found

Answer

Option text not found

Question 9

Example of primary pollutant

Accepted Answer

hydrocarbons

Answer

SO 2

Answer

NO 2

Answer

CO