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CDS · Chemistry
CC10 — Environmental Chemistry — Quiz
CDS
20 Questions
No Negative Marking
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Question 1
The primary cause of acid rain is the atmospheric presence of:
A
Carbon dioxide and methane
B
Sulphur dioxide (SO2) and nitrogen oxides (NOx)
C
CFCs and ozone
D
Carbon monoxide and lead particles
Question 2
BOD (Biochemical Oxygen Demand) is used to measure:
A
The amount of oxygen dissolved in clean drinking water
B
The degree of organic pollution in water
C
The bacterial count per millilitre of water
D
The amount of heavy metals in industrial effluent
Question 3
Eutrophication of water bodies is caused by excess runoff of:
A
Heavy metals from mining operations
B
Nitrogen and phosphorus from
C
Petroleum products from oil spills
D
Chloride ions from road salt
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