Class IX

Solutions that contain solid solutes in liquid solvents are called
  1. liquids in solids
  2. solids in liquids
  3. solids in solids
  4. solids in gas
Commercially concentrated HCl is
  1. 40%
  2. 50%
  3. 37%
  4. 80%
Colloids can
  1. scatter light
  2. not scatter light
  3. absorb heat
  4. evolve heat
In air nitrogen gas acts as
  1. solute
  2. solvent
  3. gaseous solute
  4. aqueous solute
colloid
  1. less than 103 nm
  2. 102 nm
  3. greater than 103
  4. 10 nm
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