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General Chemistry MCQ Question with Answer

General Chemistry MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

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Question No : 1
Which of the following is not a chemical change?

Rusting of iron
Burning of magnesium
Sublimation of iodine
Electrolysis of water
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Question No : 2
Which of the following is not a physical change?

Distillation of water
Action of heat on potassium chlorate
Powdering of glass
Burning of an electric lamp
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Question No : 3
The atomic number of an element represents

number of neutrons in the nucleus
number of protons and neutrons in the nucleus
the valency of the element
number of protons in the nucleus
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Question No : 4
Which of the following statements regarding natural radioactivity is true?

It is spontaneous disintegration of atoms
It is induced by bombardment with projectiles
It is transmutation of atoms with projectiles
It is dependent on temperature
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Question No : 5
Gases have

a definite shape but not volume
a definite volume and shape
a definite volume but not shape
neither definite volume nor shape
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Question No : 6
The most abundant constituent in air is

hydrogen
nitrogen
oxygen
noble gases
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Question No : 7
Ethyl alcohol is

a deliquescent substance
an efflorescent substance
a hygroscopic substance
a dehydrating substance
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Exam Name No. Of Q Attempted Link
Chemistry set 1 30 3005 Start
Chemistry set 2 30 1678 Start
Chemistry set 3 30 1453 Start
Chemistry set 4 30 1518 Start
Chemistry set 5 30 1561 Start
Chemistry set 6 30 1350 Start
Chemistry set 7 30 1624 Start
Chemistry set 8 30 1430 Start
Chemistry set 9 30 1372 Start
Chemistry set 10 30 1611 Start
Chemistry set 11 30 1452 Start
Chemistry set 12 30 1570 Start

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