Friday, February 28, 2020

WBCS Polity and Constitution MCQs Prelims and Mains

Chemistry questions and answers For UPSC | SSC | Rail | RRB | State PSC | neet P14


Chemistry - 14

66. Milk is an example of
(A) emulsion
(B) gel
(C) suspension
(D) solution

Correct Answer: [A] emulsion.
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67. The resistance of which of the following decreases with the rise of temperature?
(A) Silicon
(B) Mercury
(C) Copper
(D) Iron

Correct Answer: [A] Silicon.
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68. Which of the following processes makes direct use of oxygen?
(A) Citric Acid Cycle
(B) Electron transport
(C) Glycolysis
(D) Fermentation

Correct Answer: [B] Electron transport.
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69. Which one of the following is in the mixture of sympathetic ink?
(A) Magnesium chloride and water
(B) None of the above
(C) Cobalt chloride and water
(D) Zinc chloride and water

Correct Answer: [C] Cobalt chloride and water.
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70. Normal saline is an aqueous solution of sodium chloride of strength
(A) 1.00 molar
(B) 1
(C) 0.84%
(D) 1.00 normal

Correct Answer: [C] 0.84%.
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