1099+ Important Chemistry MCQ Questions Answers

Q:

Which of the following statements is Incorrect?

A) The particles of matter have spaces between them	B) The particles of matter are extremely small
C) The particles of matter attract each other	D) The particles of matter are in stationary state

Answer & Explanation Answer: D) The particles of matter are in stationary state

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Q:

What enables an electric current to flow in a circuit?

A) The motion of electrons	B) The motion of neutrons
C) The motion of positrons	D) The motion of protons

Answer & Explanation Answer: A) The motion of electrons

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Q:

Which of the following statements are CORRECT?

I. Melamine is a Thermo setting plastic.

II. It resists fire.

III It is a poor conductor of heat.

A) Only I and II	B) Only I and III
C) Only II and III	D) All I, II and III

Answer & Explanation Answer: D) All I, II and III

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Q:

Which of the following statement(s) is/are CORRECT?

I. Bases are soapy to touch.

II. Bases generate OH– ions.

III. Metal oxides dissolve in water to form Acidic solution.

A) Only I and II	B) Only I and II
C) Only II and III	D) All I, II and III

Answer & Explanation Answer: A) Only I and II

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Q:

Which species is a conjugate acid of OH- ?

A) H+	B) O2-
C) OH	D) H2O

Answer & Explanation Answer: D) H2O

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Q:

Match the following items of column A with column B.

A) I – 3, II – 1, III – 2	B) I – 2, II – 1, III – 3
C) I – 2, II – 3, III – 1	D) I – 1, II – 2, III – 3

Answer & Explanation Answer: B) I – 2, II – 1, III – 3

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Q:

Which of the following statements about the reaction below are INCORRECT?

$2 Pb + C \to 2 Pb + {CO}_{2}$

A. Carbon di-oxide is getting, oxidised
B. Lead is getting reduced
C. Carbon is oxidised
D. Lead oxide is getting reduced

A) A and C	B) A and B
C) B and C	D) A, B and C

Answer & Explanation Answer: B) A and B

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Q:

Which of the following is NOT a waste material removed from blood in the kidney?

A) Ammonia	B) Carbon dioxide
C) Urea	D) Uric acid

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