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Chemical Formulae of Molecular Element and Compound MCQs PDF Download – Prep Test

MCQ 1: Chemical symbol represents:

  1. chemical formula
  2. molecular formula
  3. structural formula
  4. atomic formula

MCQ 2: "O3" is a chemical formula of:

  1. oxygen
  2. oxides
  3. ozone
  4. acid rain

MCQ 3: Ammonia molecule contains one nitrogen atom and three atoms of:

  1. hydrogen
  2. helium
  3. nitrogen
  4. carbon

MCQ 4: In nucleus, mass of an atom is more than:

  1. 0.9994
  2. 0.9499
  3. 0.9949
  4. 0.4999

MCQ 5: The number and types of atoms a molecule contain, are shown by its:

  1. chemical formula
  2. molecular formula
  3. structural formula
  4. atomic formula

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