Top 500 GK Questions 2023-24

General Knowledge

Q.451 Normal valency of nitrogen is

A. 2
 B. 3
 C. 4
 D. 5

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Q.452 The isotope atoms differ in

A. atomic number
 B. number of protons
 C. number of electrons
 D. atomic weight

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Q.453 Nucleus of an atom contains

A. electrons
 B. protons
 C. electrons and protons
 D. protons and neutrons

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Q.454 Which one of the following does not contain silver?

A. Horn silver
 B. Ruby silver
 C. German silver
 D. Lunar caustic

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Q.455 Nail polish remover contains

A. acetone
 B. benzene
 C. acetic acid
 D. petroleum ether

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Q.456 What is a mixture of potassium nitrate powdered charcoal and sulphur called?

A. paint
 B. glass
 C. gun powder
 D. cement

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Q.457 Which is the heaviest metal?

A. iron
 B. mercury
 C. nickel
 D. osmium

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Q.458 Bleaching action of chlorine is by

A. oxidation
 B. reduction
 C. decomposition
 D. hydrolysis

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Q.459 Radon is

A. germon radio
 B. inert gas
 C. artificial fibre
 D. an explosive

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Q.460 pH of water is

A. 4
 B. 7
 C. 12
 D. 18

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