AFCAT Chemistry
Environmental Chemistry — Quiz
20 Questions · No Negative Marking
Question 1
The main cause of photochemical smog is:
ASulphur dioxide reacting with fog droplets
BNitrogen oxides and hydrocarbons reacting with
CCoal burning in the absence of oxygen
DCarbon dioxide accumulating in cities at night
Question 2
Which gas is primarily responsible for the greenhouse effect and global warming?
AOxygen (O₂)
BNitrogen (N₂)
CCarbon dioxide (CO₂)
DArgon (Ar)
Question 3
BOD (Biochemical Oxygen Demand) is a measure of:
AThe concentration of oxygen dissolved in clean water sources
BThe oxygen consumed by microorganisms decomposing organic matter in water
CA measure of the biological diversity of species in a water body
DThe chemical oxygen demand to oxidise inorganic pollutants in water
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