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 14 ]

C

Chandan Das • 6.78K Points
Tutor III Chemistry

Q) Dry ice is the solid form of :

  • (A) Air
  • (B) Carbon dioxide
  • (C) Nitrogen
  • (D) Water
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Correct Answer - Option (B)

Explanation:

Dry ice, carbon dioxide in its solid form, a dense, snow like substance that sublimes (passes directly into the vapour without melting) at −78.5 °C (−109.3 °F), used as a refrigerant, especially during shipping of perishable products such as meats or ice cream.

C

Chandan Das • 6.78K Points
Tutor III Chemistry

Q) Diamond is harder than graphite because of :

  • (A) Difference in layers of atoms
  • (B) Tetrahedral structure of diamond
  • (C) Difference of crystalline structures
  • (D) None of these
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Correct Answer - Option (A)

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

C

Chandan Das • 6.78K Points
Tutor III Chemistry

Q) Hardest allotrope of carbon is

  • (A) Diamond
  • (B) Graphite
  • (C) Coke
  • (D) Lamp black
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Correct Answer - Option (A)

Explanation:

Diamond is a well known allotrope of carbon. The hardness and high dispersion of light of diamond make it useful for both industrial applications and jewelry. Diamond is the hardest known natural mineral.

M

Mr. Dubey • 100.64K Points
Coach Chemistry

Q) Some of the mineral elements required in extremely small quantities (traces) are called microelements. Group of such elements are

  • (A) copper, zinc, magnesium, iron and sulfur
  • (B) zinc, copper, manganese, molybdenum and boron
  • (C) molybdenum, boron, zinc, magnesium and calcium
  • (D) manganese, zinc, iron, boron and calcium
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Correct Answer - Option (B)

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

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