Chemistry MCQs

Question 1

Threshold limit value of copper in the atmospheric air is

Accepted Answer

1.0 mg/m3

Answer

0.001 mg/m3

Answer

0.01 mg/m3

Answer

5.0 mg/m3

Question 2

Removal of carbon particles from air involves the principle of

Accepted Answer

Electrophoresis

Answer

Precipitation

Answer

Filteration

Answer

Sedimentation

Question 3

Physico-chemical characteristics of water in water sources undergo changes due to

Accepted Answer

Effluents

Answer

Aquatic macrophytes

Answer

Auatic fungi

Answer

Evapotranspiration

Question 4

Sulphur dioxide present in the industrial chimney exhaust causes

Accepted Answer

All of the above

Answer

Respiratory and lung disease

Answer

Reduction in plant's productivity owing to acid rain

Answer

Corrosion building materials

Question 5

Coating of solid waste with impervious material is known as

Accepted Answer

Encapsulation

Answer

Chemical fixation

Answer

Landfill

Answer

Capping

Question 6

Taj Mahal is greatly affected due to :

Accepted Answer

Acid rain

Answer

Tourists

Answer

Deforestation

Answer

Sound pollution

Question 7

High concentration hydrocarbon pollutants in atmospheric air causes

Accepted Answer

Cancer

Answer

Silicosis

Answer

Respiratory diseases (e.g.asthma)

Answer

Reduced crop yield

Question 8

Which one is not a primary greenhouse gases in the Earth's atmosphere?

Accepted Answer

Nitrogen

Answer

Carbon dioxide

Answer

Methane

Answer

Ozone

Question 9

Which of the following is secondary air pollutant ?

Accepted Answer

SO2

Answer

Photochemical smog

Answer

NO2

Answer

Dust particles