Chemistry MCQ Questions with answers

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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. The Correct answer will be displayed below. You can share any question with your friends on whatsapp by tapping Share button.

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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
💬 Discuss
✅ Correct Answer: (A) Greenhouse effect

Published by Yogesh ⭐ 7.67K Points at 12-Sep-2021 07:42 pm in Chemistry

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
💬 Discuss
✅ Correct Answer: (C) protons and neutrons

Published by Yogesh ⭐ 7.67K Points at 12-Sep-2021 07:42 pm in Chemistry

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
💬 Discuss
✅ Correct Answer: (A) molality

Published by Yogesh ⭐ 7.67K Points at 12-Sep-2021 07:43 pm in Chemistry

Q. The most electronegative element among the following is

  • (A) sodium
  • (B) bromine
  • (C) fluorine
  • (D) oxygen
💬 Discuss
✅ Correct Answer: (C) fluorine

Published by Yogesh ⭐ 7.67K Points at 12-Sep-2021 07:43 pm in Chemistry

Q. The metal used to recover copper from a solution of copper sulphate is

  • (A) Na
  • (B) Ag
  • (C) Hg
  • (D) Fe
💬 Discuss
✅ Correct Answer: (D) Fe

Published by Yogesh ⭐ 7.67K Points at 12-Sep-2021 07:45 pm in Chemistry

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)
💬 Discuss
✅ Correct Answer: (D) p-electrons in CI(Z = 17)

Published by Yogesh ⭐ 7.67K Points at 12-Sep-2021 07:46 pm in Chemistry

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
💬 Discuss
✅ Correct Answer: (A) smelting

Published by Yogesh ⭐ 7.67K Points at 12-Sep-2021 07:46 pm in Chemistry

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
💬 Discuss
✅ Correct Answer: (A) H2 at -73oC

Published by Yogesh ⭐ 7.67K Points at 12-Sep-2021 07:47 pm in Chemistry

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
💬 Discuss
✅ Correct Answer: (C) igneous rocks

Published by Yogesh ⭐ 7.67K Points at 12-Sep-2021 07:48 pm in Chemistry

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
💬 Discuss
✅ Correct Answer: (C) Henry's law

Published by Yogesh ⭐ 7.67K Points at 12-Sep-2021 07:48 pm in Chemistry

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