Question 1.
Bleaching powder is used in drinking water as a/an
A. Disinfectant
B. Antibiotic
C. Antiseptic
D. Coagulant
Ans: A. Disinfectant
Question 2.
Water cycle refers to
A. An integrated attempt to recycle water in relatively arid regions
B. Constant movement of water from ocean to land and back to ocean once again
C. Scientific management of water in areas excessively plagued with water-logging
D. Water distribution in relatively dry areas
Ans: B. Constant movement of water from ocean to land and back to ocean once again
Question 3.
Which of the following appeared to be with a significant potential for accumulation through food chains ?
A. DDT
B. Parathion
C. Lindane
D. Carbaryl
Ans: A. DDT
Question 4.
Oxide of sulphur present in the atmosphere are washed down by rains to cause :
A. Depletion of fossil fuel reserves
B. Eutrophication in lakes
C. Lowering of pH of soil
D. Industrial smog formation
Ans: A. Depletion of fossil fuel reserves
Question 5.
The process of removing calcium and magnesium from hard water is known as
A. Sedimentation
B. Filtration
C. Flocculation
D. Water softening
Ans: D. Water softening
Question 6.
Permanent hardness of water may be removed by addition of
A. Alum
B. Sodium carbonate
C. Lime
D. Potassium Permangante
Ans: B. Sodium carbonate
Question 7.
Higher concentration of nitrogen dioxide in atmosphere air causes
A. Cancer
B. Bronchitis
C. Asphyxiation
D. Corrosion
Ans: B. Bronchitis
Question 8.
Supersonic jet causes pollution by thinning of
A. O3 layer
B. O4 layer
C. SO2 layer
D. CO2 layer
Ans: A. O3 layer
Question 9.
Hard water and soft water can be distinguished by using
A. Dilute acid
B. Ordinary soap
C. Detergent
D. Liquid soap
Ans: C. Detergent
Question 10.
Acid rain is caused due to pollution of atmosphere by
A. Oxides of carbon and nitrogen
B. Oxides of nitrogen and sulphur
C. Oxides of nitrogen and phosphorous
D. None of these
Ans: B. Oxides of nitrogen and sulphur
Question 11.
Which of the following in automobile exhaust can cause cancer?
A. Oxides of nitrogen
B. Carbon monoxide
C. Lead
D. Polyclinic hydrocarbons
Ans: D. Polyclinic hydrocarbons
Question 12.
The pollutant responsible for ozone holes is __
A. CO2
B. SO2
C. CO
D. CFC
Ans: D. CFC
Question 13.
Which method will be employed to test the hardness of water?
A. Boiling
B. Distillation
C. Formation of lather with soap
D. None of these
Ans: C. Formation of lather with soap
Question 14.
What are the components responsible for acid rain?
A. Nitrogen monoxide (NO) and Carbon monoxide (CO)
B. Sulphur dioxide (SO2) and Nitrogen oxides (NOx)
C. Carbon dioxide (CO2) and Carbon monoxide (CO)
D. Oxides of carbon (COx) and Oxides of nitrogen (NOx)
Ans: B. Sulphur dioxide (SO2) and Nitrogen oxides (NOx)
Question 15.
White lung cancer is caused by
A. Asbestos
B. Silica
C. Textiles
D. Paper
Ans: C. Textiles
Question 16.
Major gaseous pollutant of the thermal power station is
A. H2 S
B. NH3
C. NO2
D. SO2
Ans: D. SO2
Question 17.
The purest form of water is
A. Tap water
B. Rain water
C. Ground water
D. Distilled water
Ans: B. Rain water
Question 18.
Which gas emitted by power stations causes acid rain?
A. Carbon dioxide
B. Sulphur dioxide
C. Helium
D. Nitrogen
Ans: B. Sulphur dioxide
Question 19.
Which of the following is a man-made source of air pollution ?
A. Automobile exhaust
B. Forest fire
C. Bacterial action in soil and swamp areas
D. All of the above
Ans: A. Automobile exhaust
Question 20.
The gas causing acid rain in an industrial area is
A. Carbon dioxide
B. Carbon monoxide
C. Sulphur dioxide
D. Methane
Ans: C. Sulphur dioxide
Chemistry GK MCQs all set
- Chemistry GK MCQs Set-1
- Chemistry GK MCQs Set-2
- Chemistry GK MCQs Set-3
- Chemistry GK MCQs Set-4
- Chemistry GK MCQs Set-5
- Chemistry GK MCQs Set-6
- Chemistry GK MCQs Set-7
- Chemistry GK MCQs Set-8
- Chemistry GK MCQs Set-9
- Chemistry GK MCQs Set-10
- Chemistry GK MCQs Set-11
- Chemistry GK MCQs Set-12
- Chemistry GK MCQs Set-13
- Chemistry GK MCQs Set-14
- Chemistry GK MCQs Set-15
- Chemistry GK MCQs Set-16
- Chemistry GK MCQs Set-17
- Chemistry GK MCQs Set-18
- Chemistry GK MCQs Set-19
- Chemistry GK MCQs Set-20
- Chemistry GK MCQs Set-21
- Chemistry GK MCQs Set-22
- Chemistry GK MCQs Set-23
- Chemistry GK MCQs Set-24
- Chemistry GK MCQs Set-25
- Chemistry GK MCQs Set-26
- Chemistry GK MCQs Set-27
- Chemistry GK MCQs Set-28
- Chemistry GK MCQs Set-29
- Chemistry GK MCQs Set-30
- Chemistry GK MCQs Set-31
- Chemistry GK MCQs Set-32
- Chemistry GK MCQs Set-33
- Chemistry GK MCQs Set-34
- Chemistry GK MCQs Set-35
- Chemistry GK MCQs Set-36
- Chemistry GK MCQs Set-37
- Chemistry GK MCQs Set-38
- Chemistry GK MCQs Set-39
- Chemistry GK MCQs Set-40
- Chemistry GK MCQs Set-41
- Chemistry GK MCQs Set-42
- Chemistry GK MCQs Set-43
- Chemistry GK MCQs Set-44
- Chemistry GK MCQs Set-45
- Chemistry GK MCQs Set-46
- Chemistry GK MCQs Set-47
- Chemistry GK MCQs Set-48
- Chemistry GK MCQs Set-49
- Chemistry GK MCQs Set-50
- Chemistry GK MCQs Set-51
- Chemistry GK MCQs Set-52
- Chemistry GK MCQs Set-53
- Chemistry GK MCQs Set-54
- Chemistry GK MCQs Set-55
- Chemistry GK MCQs Set-56
- Chemistry GK MCQs Set-57
- Chemistry GK MCQs Set-58
- Chemistry GK MCQs Set-59
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