Physical and Chemical Changes Multiple Choice Questions and Answers 24 PDF Book Download

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MCQ on Physical and Chemical Changes Worksheets 24 PDF Book Download

MCQ: When liquid is cooled down, it changes into solid, this process is known as

  1. melting
  2. freezing
  3. condensation
  4. sublimation

B

MCQ: To make high temperature for formation of ammonia, substance which is used, is

  1. steel
  2. iron
  3. aluminum
  4. copper

B

MCQ: One or more new substances are formed due to

  1. physical change
  2. chemical change
  3. biological change
  4. state variation

B

MCQ: First thing that happens during chemical reaction is that

  1. a new substance is formed
  2. a substance is reversed to its components
  3. energy is given out
  4. atoms remain same

A

MCQ: Density of liquids is

  1. lower than solids but higher than gases
  2. lower than solids and gases both
  3. higher than solids and gases both
  4. higher than solids but lower than gases

A