1099+ Important Chemistry MCQ Questions Answers

Q:

Which of the following is not an example of Allotrope?

A) Diamond	B) Graphite
C) Ozone	D) Steel

Answer & Explanation Answer: D) Steel

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Q:

Turquoise is an ore/mineral of

A) Copper	B) Manganese
C) Mercury	D) Tin

Answer & Explanation Answer: A) Copper

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Q:

How many atoms are present in a $(NH$ ₄)2SO4 molecule?

A) 15	B) 14
C) 13	D) 12

Answer & Explanation Answer: A) 15

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Q:

The common name of sulphur is

A) Freon	B) galena
C) lime	D) brimstone

Answer & Explanation Answer: D) brimstone

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Q:

Which of the following can be beaten and converted into thin sheets?

A) Zinc	B) Phosphorus
C) Sulphur	D) Oxygen

Answer & Explanation Answer: A) Zinc

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Q:

Atomic bomb is based on which of the following principle?

A) Nuclear fusion	B) Nuclear fission
C) Natural radioactivity	D) All options are correct

Answer & Explanation Answer: B) Nuclear fission

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Q:

What is an exothermic reaction?

A) Reaction in which heat is released.	B) Reaction in which heat is absorbed.
C) Reaction in which neither heat is released nor absorbed.	D) None

Answer & Explanation Answer: A) Reaction in which heat is released.

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Q:

Which among the following is an example of mixture?

A) Milk	B) Gasoline
C) Liquefied petroleum gas	D) All options are correct

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