Class VII

Mixtures may comprise
  1. element
  2. compounds
  3. both a and b
  4. none of above
Minerals in water includes
  1. calcium
  2. magnesium
  3. potassium
  4. all of them
Substance which is made by mixing two elements without being chemically combined is called a
  1. element
  2. compound
  3. mixture
  4. solution
Raw water is passed for purification though
  1. sand
  2. colander
  3. watch glass
  4. strainer
A separation technique which is used to obtain liquid from a solution by heating until boils off from solution is called
  1. Fractional distillation
  2. filtration
  3. evaporation
  4. distillation
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