Atoms Molecules and Ions Multiple Choice Questions and Answers 6 PDF Download

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MCQs on Atoms Molecules and Ions Worksheets 6 Quiz PDF Download

MCQ: Diameter of a 'nucleus' is

  1. 0.00001nm
  2. 1nm
  3. 0.1nm
  4. 0.01nm

A

MCQ: Total number of protons in atom of each element is called its

  1. atomic number
  2. atomic mass
  3. molecular mass
  4. atomic scale

A

MCQ: Smallest particle of an atom which exists, is called

  1. matter
  2. atom
  3. proton
  4. electron

B

MCQ: Nucleus in an atom consists of

  1. protons
  2. neutrons
  3. electrons
  4. both a and b

D

MCQ: Molecules which contain fixed number of same type of atoms are molecules or

  1. elements
  2. compounds
  3. mixtures
  4. all of them

A