Atoms Molecules Mixtures and Compounds Multiple Choice Questions and Answers 25 PDF Download

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MCQs on Atoms Molecules Mixtures and Compounds Worksheets 25 Quiz PDF Download

MCQ: Smallest part of a substance would be referred as a

  1. molecule
  2. electron
  3. metal
  4. compound

A

MCQ: Elements that make up most living organisms are

  1. hydrogen
  2. oxygen
  3. carbon
  4. all of them

D

MCQ: Element is a class that cannot be separated into further simple substances by

  1. scientific means
  2. physical means
  3. chemical means
  4. none of them

C

MCQ: Chemical formula for chalk is

  1. C2H5OH
  2. H2SO4
  3. CaCO3
  4. C2H3O2

C

MCQ: Sublimation is a process in which solid changes to gas without passing through the

  1. evaporation
  2. solid phase
  3. liquid phase
  4. crystal phase

C