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Chemistry MCQ Questions with answers

Here Important Chemistry MCQ questions are added which are frequently asked in almost all the examinations. You can check the correct answer of any question on clicking the show answer button or on option itself. The Correct answer will be displayed below. You can share any question with your friends on whatsapp by tapping whatsapp button.

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Learn Chemistry MCQs [Page 1 ]

Q) Which of the following phenomenon is considered responsible for Global Warming?

(A) Greenhouse effect
(B) Fire in coal mines
(C) Dry farming
(D) Monsoon
Correct Answer - Option (A)

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

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Q) The nucleus of an atom consists of

(A) electrons and neutrons
(B) electrons and protons
(C) protons and neutrons
(D) All of the above
Correct Answer - Option (C)

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

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Q) The number of moles of solute present in 1 kg of a solvent is called its

(A) molality
(B) molarity
(C) normality
(D) formality
Correct Answer - Option (A)

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

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Q) The number of d-electrons in Fe2+ (Z = 26) is not equal to that of

(A) p-electrons in Ne(Z = 10)
(B) s-electrons in Mg(Z = 12)
(C) d-electrons in Fe(Z = 26)
(D) p-electrons in CI(Z = 17)
Correct Answer - Option (D)

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

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Q) The metallurgical process in which a metal is obtained in a fused state is called

(A) smelting
(B) roasting
(C) calcinations
(D) froth floatation
Correct Answer - Option (A)

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

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Q) The molecules of which gas have highest speed?

(A) H2 at -73oC
(B) CH4 at 300 K
(C) N2 at 1,027oC
(D) O2 at 0oC
Correct Answer - Option (A)

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

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Q) The oldest rocks in the earth's crust were once molten, and came from deep inside the earth. The molten rock, called magma, spewed out in volcanic eruptions during the earth's early life and solidified into hard rock's called

(A) granite
(B) basalt
(C) igneous rocks
(D) sedimentary rocks
Correct Answer - Option (C)

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

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Q) The law which states that the amount of gas dissolved in a liquid is proportional to its partial pressure is

(A) Dalton's law
(B) Gay Lussac's law
(C) Henry's law
(D) Raoult's law
Correct Answer - Option (C)

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

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