1099+ Important Chemistry MCQ Questions Answers

Q:

Galvanization a process to prevent rusting involves use of ___ coating to steel or iron.

A) Nickel	B) Magnesium
C) Copper	D) Zinc

Answer & Explanation Answer: D) Zinc

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Q:

Identify a use of the isotope of uranium.

A) Fuel in nuclear reactors	B) Treatment of goitre
C) Treatment of cancer	D) Fuel in aeroplanes

Answer & Explanation Answer: A) Fuel in nuclear reactors

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Q:

Which of the following is a correct pair according to increasing atomic number from left to right?

A) He, H	B) Na, Ne
C) Be, B	D) Ca, Cl

Answer & Explanation Answer: C) Be, B

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Q:

___ is one of the states of matter obtained by cooling a gas of very low density to extremely low temperatures.

A) Gas	B) Plasma
C) Bose-Einstein Condensate (BEC)	D) Plasma Condensate

Answer & Explanation Answer: C) Bose-Einstein Condensate (BEC)

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Q:

___ is used in yellow lamp street lights.

A) Neon	B) Nitrogen
C) Phosphorous	D) Sodium

Answer & Explanation Answer: D) Sodium

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Q:

Which of the following statements is wrong with regard to strong acids?

A) Strong acids react very rapidly with other substances (such as metal carbonates and metal hydrogen carbonates)	B) Hydrochloric acid, Sulphuric acid and Nitric acid are strong acids
C) Acids are those chemical substances that have a salty taste	D) All minerals acids are strong acids

Answer & Explanation Answer: C) Acids are those chemical substances that have a salty taste

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Q:

___ is used as a stabilizer in ice cream.

A) Gelatin	B) Sugar
C) Milk	D) Strawberry

Answer & Explanation Answer: A) Gelatin

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Q:

If the electronic configuration of elements A and B are $1 S^{2}, 2 S^{2} 2 P^{6}, 3 S^{1} and 1 S^{2}, 2 S^{2} 2 P^{6}, 3 S^{2} 3 P^{4}$ respectively, then the formula of the compound formed by the combination of these elements will be:

A) AB3	B) AB2
C) A2B	D) AB

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