Elements and Compounds Multiple Choice Questions and Answers 8 PDF Download

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MCQs on Elements and Compounds Worksheets 8 Quiz PDF Download

MCQ: Process which involves in breaking down element by passing electricity through it is called

  1. electrolysis
  2. hydrolysis
  3. photolysis
  4. photosynthesis

A

MCQ: Chinese thought that number of elements were

  1. 3
  2. 4
  3. 2
  4. 5

D

MCQ: Low densities, low melting, low boiling point and poor conductivity are found in

  1. metals
  2. non metals
  3. alkalis
  4. metalloids

B

MCQ: Air ships and balloons use gas called

  1. oxygen
  2. hydrogen
  3. helium
  4. neon

C

MCQ: A compound which yields in black solid, copper oxide and colorless gas carbon dioxide on heating, is

  1. copper carbonate
  2. iron sulfide
  3. sodium chloride
  4. copper chloride

A