1099+ Important Chemistry MCQ Questions Answers

Q:

______________ is a multibranched polysaccharide of glucose that serves as a form of energy storage in animals and fungi.

A)	B) Glycogen
C) Pectin	D) Chitin

Answer & Explanation Answer: B) Glycogen

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Q:

Which of the following elements has the lowest melting point?

A) Titanium	B) Sulphur
C) Argon	D) Zinc

Answer & Explanation Answer: C) Argon

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Q:

Manganite is an ore/mineral of

A) Beryllium	B) Chromium
C) Manganese	D) Copper

Answer & Explanation Answer: C) Manganese

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Q:

Which of the following is a greenhouse gas or a gas which can deplete the ozone layer?

A) Ar	B) HN3
C) CO2	D) C4H6

Answer & Explanation Answer: C) CO2

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Q:

Safety matches contain

A) Sulphur	B) Phosphorus
C) Magnesium	D) Potassium

Answer & Explanation Answer: B) Phosphorus

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Q:

What is the chemical formula for Sodium Chloride (Salt)?

A) NaCl2	B) NaCl
C) Na2Cl	D) Na2C

Answer & Explanation Answer: B) NaCl

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Q:

Which among the following metal is used for galvanization?

A) Zinc	B) Copper
C) Iron	D) Silver

Answer & Explanation Answer: A) Zinc

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Q:

What are Aldehydes ?

A) Mild oxidising agents	B) Strong oxidising agents
C) Strong reducing agents	D) Mild reducing agents

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