Practice MCQ Questions and answers on Chemistry-GK Page-4 section-3

Section 1 Section 2 Section 3 Section 4 Section 5 Section 6 Section 7 Section 8 Section 9 Section 10 Section 11 Section 12

31.
Bleaching powder is used in drinking water as a/an

A. Disinfectant

B. Antibiotic

C. Antiseptic

D. Coagulant

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32.
The process of removing calcium and magnesium from hard water is known as

A. Sedimentation

B. Filtration

C. Flocculation

D. Water softening

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33.
Hard water and soft water can be distinguished by using

A. Dilute acid

B. Ordinary soap

C. Detergent

D. Liquid soap

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34.
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

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35.
The purest form of water is

A. Tap water

B. Rain water

C. Ground water

D. Distilled water

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36.
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

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37.
Permanent hardness of water may be removed by addition of

A. Alum

B. Sodium carbonate

C. Lime

D. Potassium Permangante

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38.
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

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39.
What are the components responsible for acid rain?

A. Nitrogen monoxide (NO) and Carbon monoxide (CO)

B. Sulphur dioxide (SO₂) and Nitrogen oxides (NO_x)

C. Carbon dioxide (CO₂) and Carbon monoxide (CO)

D. Oxides of carbon (CO_x) and Oxides of nitrogen (NO_x)

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40.
Which gas emitted by power stations causes acid rain?

A. Carbon dioxide

B. Sulphur dioxide

C. Helium

D. Nitrogen

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Practice MCQ Questions and answers on Chemistry-GK

31. Bleaching powder is used in drinking water as a/an

Answer & Solution

32. The process of removing calcium and magnesium from hard water is known as

Answer & Solution

33. Hard water and soft water can be distinguished by using

Answer & Solution

34. Which method will be employed to test the hardness of water?

Answer & Solution

35. The purest form of water is

Answer & Solution

36. Water cycle refers to

Answer & Solution

37. Permanent hardness of water may be removed by addition of

Answer & Solution

38. Acid rain is caused due to pollution of atmosphere by

Answer & Solution

39. What are the components responsible for acid rain?

Answer & Solution

40. Which gas emitted by power stations causes acid rain?

Answer & Solution

Read More Section(Chemistry)

31.
Bleaching powder is used in drinking water as a/an

32.
The process of removing calcium and magnesium from hard water is known as

33.
Hard water and soft water can be distinguished by using

34.
Which method will be employed to test the hardness of water?

35.
The purest form of water is

36.
Water cycle refers to

37.
Permanent hardness of water may be removed by addition of

38.
Acid rain is caused due to pollution of atmosphere by

39.
What are the components responsible for acid rain?

40.
Which gas emitted by power stations causes acid rain?