Environmental Chemistry ONLINE MCQs 1

These are Environmental Chemistry MCQs 1. Environmental chemistry is the scientific study of the chemical and biochemical phenomena that occur in natural places. It should not be confused with green chemistry, which seeks to reduce potential pollution at its source.

1. Pollutant is ___________.

• Undesirable foreign matter
• Desirable foreign matter
• Required foreign matter
• Useful foreign matter

2. Smog is mixture of fog and ____________.

• Gases
• Smoke
• Pollutants
• Oxides

3. From the following, identify the gas which is not responsible for acid rain.

• SO₂
• NO₂
• HCl
• Ozone

4. Photochemical smog is formed by combination of nitrogen oxide and ____________.

• Hydrocarbons
• Smoke
• Fog
• SO₂

5. Temperature rate of earth’s atmosphere is increases due to green house effect is,

• 0.05⁰ C / Year
• 0.05⁰ C / Month
• 0.15⁰ C / Year
• 0.05⁰ C / Decade

6. From the following, identify the metal which can’t pollute environment.

• As
• Pb
• Pt
• Hg

7. How much air does a man normally inhale in a day?

• 16 Kg
• 15 Kg
• 10 Kg
• Vary according to season

8. Effect of increasing CO2 in air is ________.

• Heating
• Cooling
• Increasing pollution
• None of above

9. Naturally CO2 is removed from air by _____________.

• Metallic reaction
• Photosynthesis
• Forestation
• Deforestation

10. Most dangerous pollutant emitted in air during incomplete combustion of fuels is _______-.

• CO
• CO₂
• NO₂
• CH₄