CIE iGCSE Co-Ordinated Science C12.4 Separation and purification Exam Style Questions Paper 2
Question
Which process is used to obtain water from a salt solution?
(A) chromatography
(B) crystallisation
(C) distillation
(D) filtration
▶️Answer/Explanation
Ans: C
Question
A sample of water contains two useful substances, insoluble chalk and a soluble salt.
Which two processes are used to individually separate the insoluble chalk from the soluble salt and from the water?
(A) distillation and chromatography
(B) distillation and crystallisation
(C) filtration and chromatography
(D)) filtration and crystallisation
▶️Answer/Explanation
Ans: D
Question
An aqueous salt solution contains an insoluble impurity.
Which processes are used to obtain pure salt crystals?
A distillation then crystallisation
B distillation then chromatography
C filtration then crystallisation
D filtration then chromatography
▶️Answer/Explanation
Ans : C
Question
Hexane and octane are liquid hydrocarbons that mix together.
Which apparatus is used to separate a mixture of these two liquids?
▶️Answer/Explanation
Ans : D