CSAT Prelims Chemistry - General Knowledge Questions and Answers for UPSC Exam | Page-5
Questions
42
Which one of the following non-metals is not a poor conductor of electricity ?
Answer: Option [A]
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44
The water pollution in river is measured by the dissolved amount of
Answer: Option [A]
45
With reference to the usefulness of the by-products of sugar industry, which of the following is/are correct ?
I. Bagasse can be used as biomass fuel for the generation of energy.
II. Molasses can be used as one of the feedstocks for the production of synthetic chemical fertilizers.
III. Molasses can be used for the production of ethanol.
Select correct answer using the codes given below.
Answer: Option [C]
46
The alpha particle carries two positive charge. Its mass is very nearly equal to that of
Answer: Option [B]
47
Consider the following statements: Hard water is not suitable for
I. drinking
II. washing clothes with soap
III. used in boilers
IV. irrigating crops
Which of these statements are correct ?
Answer: Option [D]
48
Which one of the following types of glass can cut off ultraviolet rays ?
Answer: Option [A]
49
Consider the following statements: Chlorofluorocarbons, known as ozone-depleting substance, are used
I. in the production of plastic foams
II. in the production of tubeless tyres
III. in cleaning certain electronic components
IV. as pressurizing agents in aerosol cans
Which of the statements given above is/are correct ?
Answer: Option [C]
50
Which one of the following materials is very hard and ductile ?
Answer: Option [B]
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