Method of Purification Multiple Choice Questions (MCQ) PDF Download

MCQ 1: Alternative techniques to crystallization involve

1. decanting only
2. centrifuging
3. filtration
4. decanting and centrifuging

MCQ 2: Vacuum distillation is used in

1. under high pressures
2. under low pressures
3. gentle heating
4. quick heating

MCQ 3: Which statement is true about when the hot molten liquid cools?

1. first crystals are the most pure
2. impure substances may also form the crystals
3. it turns into gas
4. it turns into aqueous solution

MCQ 4: Traces of water can be removed from the ethanol distillate

1. evaporation of water
2. decanting water
3. vacuum distillation
4. fraction distillation

MCQ 5: Dissolving, filtering and evaporating are the methods of

1. ice melting
2. purification
3. diffusion
4. change of state