set 2 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT general science mcq - 3 EXERCISES
The following question based on environmental chemistry topic of general science mcq
(a) poor in dissolved oxygen
(b) highly polluted
(c) rich in dissolved oxygen
(d) not suitable for aquatic life
The correct answers to the above question in:
Answer: (c)
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Read more environmental chemistry Based General Science Questions and Answers
Question : 1
Phosphate pollution is caused by
a) weathering of phosphate rocks only
b) agriculutral fertilizers only
c) sewage and agricultural fertilizers
d) phosphate rocks and sewage
Answer »Answer: (c)
Phosphate pollution is caused by sewage and agricultural fertilizers.
Question : 2
People drinking water from a shallow handpump are likely to suffer from the diseases
- cholera
- typhoid
- jaundice
- flourosis
a) 1, 2 and 3
b) 1, 2 and 4
c) 2, 3 and 4
d) 1 and 3
Answer »Answer: (a)
Question : 3
Which of the following is/are the hazardous pollutant(s) present in automobile exhaust gases?
- N2
- CO
- CH4
- Oxides of nitrogen
a) 1 and 2
b) 2 and 3
c) 2 and 4
d) 1 and 3
Answer »Answer: (c)
CO and oxides of Nitrogen are poisnous gases present in automobile exhaust gases.
Question : 4
Acid rains is caused due to emission of which of the following into the atmosphere?
a) Carbon dioxide and carbon monoxide
b) Oxides of nitrogen and sulphur
c) Ozone and carbon dioxide
d) Carbon monoxide and nitrogen
Answer »Answer: (b)
Acid rain is caused by emissions of sulphur dioxide and nitrogen oxide, which react with the water molecules in the atmosphere to produce acids.
Question : 5
Consider the following statements:
- Use of fertilizers has role on water pollution
- Excessive use of pesticides help to decrease water pollution.
a) 2 only
b) 1 only
c) 1 and 2
d) None
Answer »Answer: (a)
Question : 6
Frequent occurrence of water blooms in a lake indicates
a) oxygen deficiency
b) excessive nutrient availability
c) nutrient deficiency
d) absence of herbivores in the lake
Answer »Answer: (a)
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