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Chemistry MCQ Questions with answers

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Learn Chemistry MCQs [Page 1 of Department 13]

1) Pure alcohol can be obtained from wine by the process of

(A) distillation
(B) oxidation
(C) cracking
(D) reduction
Correct Answer - Option (A)

No Explanation found. Add Explanation and get +2 points.

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2) The gas which, on heating at high temperature under high pressure, transforms into a waxy solid is

(A) hydrogen
(B) acetylene
(C) ethylene
(D) chlorine
Correct Answer - Option (C)

No Explanation found. Add Explanation and get +2 points.

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3) The substance present in abundant amount in sea water is

(A) sugar
(B) sand
(C) calcium carbonate
(D) common salt
Correct Answer - Option (D)

No Explanation found. Add Explanation and get +2 points.

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4) The atomic number of an element is equal to the

(A) relative atomic mass
(B) number of electrons in its outermost orbit
(C) number of protons in its nucleus
(D) number of neutrons in its nucleus
Correct Answer - Option (C)

No Explanation found. Add Explanation and get +2 points.

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5) The gas evolves during the fermentation of a sugar solution is

(A) sulphur dioxide
(B) carbon dioxide
(C) carbon monoxide
(D) methane
Correct Answer - Option (B)

No Explanation found. Add Explanation and get +2 points.

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6) The main compound formed during the fermentation of cane juice is

(A) common salt
(B) glucose
(C) ethyl alcohol
(D) chloroform
Correct Answer - Option (C)

No Explanation found. Add Explanation and get +2 points.

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7) The pH of an aqueous solution of acetic acid is 2. It would increase on the addition of

(A) aqueous ammonia
(B) cane sugar
(C) hydrochloric acid
(D) common salt
Correct Answer - Option (A)

No Explanation found. Add Explanation and get +2 points.

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8) Commercially the production of ammonia is important because it can be used in the

(A) preparation of soaps
(B) manufacture of artificial foods
(C) manufacture of proteins by polymerization
(D) production of fertilisers
Correct Answer - Option (D)

No Explanation found. Add Explanation and get +2 points.

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