Class VI

Substance that cannot be further broken down into smaller pieces is known as
  1. mixture
  2. element
  3. atom
  4. molecule
Sublimation is a technique that helps chemists to
  1. break
  2. purify
  3. melt
  4. freeze
Except for one metal i.e. Mercury, rest of metals are solids at
  1. oven
  2. room temperature
  3. freezing point
  4. sunshine
Copper sulphate is white when anhydrous and blue when hydrated. This compound consists of copper, Sulphur and
  1. oxygen
  2. nitrogen
  3. helium
  4. hydrogen
Process used to obtain solute from a solution is known as
  1. sublimation
  2. distillation
  3. filtration
  4. evaporation
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