Chemistry : General Knowledge Questions and Answers

Q61. An electrically charged atom or group of atoms is called

[A] A meson

[B] A electron

[C] An ion

[D] None of the above

Q62. Which of the following is called ‘the King of Chemicals’?

[A] Hydrochloric acid

[B] Silver nitrate

[C] Sulphuric acid

[D] Nitric acid

Q63. The main element used in the vulcanisation of rubber is

[A] copper

[B] sulphur

[C] graphite

[D] nickel

Q64. The freezing point of water at 760mm pressure is

[A] 273 K

[B] 273 C

[C] -273 C

[D] 0 K

750+ Chemistry Quiz Questions and Answers

Q65. The property of metals wherein they can be beaten into thin sheets is called:

[A] ductility

[B] conduction

[C] malleability

[D] expansion

Q66. ___________ are homogeneous mixtures of two or more components.

[A] Emulsions

[B] Enzymes

[C] Amalgams

[D] Solutions

Q67. __________is an alkali metal.

[A] Manganese

[B] Magnesium

[C] Sodium

[D] Aluminium

Q68. The fundamental particles present in equal numbers in neutral atoms are

[A] protons and neutrons

[B] protons and electrons

[C] protons and positrons

[D] neutrons and electrons

Q69. Electromagnetic radiation with maximum wavelength is

[A] infrared

[B] x-rays

[C] ultraviolet

[D] radio waves

Q70. The law of constant proportions was enunciated by

[A] Dalton

[B] Avogadro

[C] Proust

[D] Berthelot