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Method of Purification MCQ (Multiple Choice Questions) PDF Download
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Method of Purification MCQs: Questions and Answers PDF Download
Alternative techniques to crystallization involve
- decanting only
- centrifuging
- filtration
- decanting and centrifuging
Vacuum distillation is used in
- under high pressures
- under low pressures
- gentle heating
- quick heating
Which statement is true about when the hot molten liquid cools?
- first crystals are the most pure
- impure substances may also form the crystals
- it turns into gas
- it turns into aqueous solution
Traces of water can be removed from the ethanol distillate
- evaporation of water
- decanting water
- vacuum distillation
- fraction distillation
Dissolving, filtering and evaporating are the methods of
- ice melting
- purification
- diffusion
- change of state
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