IGCSE O Level Chemistry MCQs - Chapter 9

Methods of purification Multiple Choice Questions (MCQ) PDF - 4

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Methods of purification Questions & Answers PDF Download: MCQ Quiz 4

MCQ 16: What is true about pure substances?

they have fixed and exact boiling point
they have fixed and exact melting points
they form only one post on chromatogram
all of above

MCQ 17: Oil and water is an example of

miscible
impure substances may also form the crystals
filtrate
suspension

MCQ 18: Dissolving, filtering and evaporating are the methods of

ice melting
purification
diffusion
change of state

MCQ 19: Crystallization of microchips does not involve

a solute
a crystal
a solvent
a soluble

MCQ 20: Fresh seawater is referred to as impure water because it contains

oxygen
aquatic animals
aquatic plants
dissolved salts

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