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Structure of Matter and Particles

Covers atoms, elements, compounds, and particle behavior in matter including diffusion and Brownian motion

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

The number of atoms present in a molecule of an element is known as its

  1. valency
  2. atomicity
  3. chemical formula
  4. symbol
Question 2 Multiple Choice (Single Answer)

2N represents two

  1. molecules of nitrogen
  2. atoms of nitrogen
  3. compounds of nitrogen
  4. ions of nitrogen
Question 3 Multiple Choice (Single Answer)

The symbol of Tin is

  1. Sn
  2. Pb
  3. An
  4. Br
Question 4 Multiple Choice (Single Answer)

Compounds may be formed by

  1. decomposition of other compounds
  2. combination of elements
  3. combination of compounds
  4. all of the above methods
Question 5 Multiple Choice (Single Answer)

2AlCl3 represents

  1. two atoms of Aluminium Chloride
  2. two molecules of Aluminium Chloride
  3. three atoms of Chlorine
  4. two atoms of Aluminium
Question 6 Multiple Choice (Single Answer)

Which of the following do not show the properties of the constituents?

  1. Water
  2. Air
  3. Sugar solution
  4. None of these
Question 7 Multiple Choice (Single Answer)

Which of the following is not a physical property of an element?

  1. Specific heat
  2. Melting point
  3. Reaction with other elements or compounds
  4. Freezing point
Question 8 Multiple Choice (Single Answer)

What is the name given to a pure substance with only one kind of atoms?

  1. Element
  2. Compound
  3. Mixture
  4. Suspension
Question 9 Multiple Choice (Single Answer)

In how many forms did the earlier Indian philosophers classify matter?

  1. 2
  2. 6
  3. 7
  4. 5
Question 10 Multiple Choice (Single Answer)

‘All matter is composed of very small particles called anu’, was first suggested by

  1. John Dalton
  2. J.J.Thomson
  3. Kanada
  4. William J.Crooke
Question 11 Multiple Choice (Single Answer)

Water is

  1. a mixture
  2. a compound
  3. an element
  4. a colloid
Question 12 Multiple Choice (Single Answer)

If we open a bottle of perfume, its fragrance spreads in the entire room within a short time due to the process of

  1. evaporation
  2. sublimation
  3. diffusion
  4. decantation
Question 13 Multiple Choice (Single Answer)

What is the scattering of light by colloidal particles is known as?

  1. Tyndall effect
  2. Brownian motion
  3. Reflection
  4. Rectilinear propagation
Question 14 Multiple Choice (Single Answer)

Random Movement of particles was discovered by

  1. Robert Brown
  2. E. Goldstein
  3. James Chadwick
  4. Wilheln Weins
Question 15 Multiple Choice (Single Answer)

The formula of quicklime is

  1. Ca(OH)2
  2. CaCl2
  3. CaO
  4. CaSO4
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