Question

Objective Questions
Choose the correct option
1. Which of the following is an element?
(a) Hydrogen
(b) Salt
(c) Water
(d) Glucose
2. Ammonium chloride can be separated from sand by
(a) decantation
(b) fractional distillation
(c) sublimation
(d) chromatography
3. Common salt can be separated from sand by
(a) distillation
(b) fractional distillation
(c) using water as a solvent
(d) using a separating funnel
4. For separating the components of which of the following mixtures can a separating funnel be used?
(a) Water + sodium chloride
(b) Chalk + water
(c) Alcohol + water
(d) Oil+ water
5. The dyes of an ink are best separated by
(b) using a separating funnel
(d) chromatography
(c) fractional distillation
(a) filtration

Answer 1

(1). Hydrogen

(2). Sublimation

(3). Using a separating funnel

(4). Chalk and Water

(5). Chromatography

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Answer 2

Answer:

The answers are :

1. (a) Hydrogen
2. (c) sublimation
3. (d) using a separating funnel.
4. (a) Chalk + water
5. (c) Fractional distillation.