1099+ Important Chemistry MCQ Questions Answers

Q:

Which of the following is not soluble in water?

A) Lead sulphate	B) Zinc sulphate
C) Potassium sulphate	D) Sodium sulphate

Answer & Explanation Answer: A) Lead sulphate

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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:

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:

The common name of sulphur is

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

Answer & Explanation Answer: D) brimstone

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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:

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:

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:

A change in which a substance undergoes a change in its physical properties is called _____________.

A) Chemical Properties	B) Physical Properties
C) Chemical Change	D) Physical Change

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