nature of matter and composition - Category wise Question and Answer Practice Test with Solutions

nature of matter and composition PRACTICE TEST [3 - EXERCISES]

set 1

set 2

set 3

Question : 16

The process used to separate oil and water is

a) separating funnel

b) distillation

c) sublimation

d) chromatography

Answer: (a)

Question : 17

Magnetism is most beneficial for separating

a) non-metallic solids and solids such as sulfur

b) magnetic solids and solids such as sulfur

c) gases and non-metallic liquids

d) non-magnetic solids from non-magnetic liquids

Answer: (b)

Magnetism is useful for separation of magnetic and nonmagnetic substances.

Question : 18

Which one of the following is not a mixture?

a) Baking soda

b) Tootpaste

c) Toilet soap

d) Vinegar

Answer: (a)

Question : 19 [NDA]

Which one of the following is not a mixture?

a) Milk

b) Air

c) Mercury

d) Cement

Answer: (c)

Question : 20

A mixture of common salt, sulphur, sand and iron filings is shaken with carbon disulphide and filtered through a filter paper. The filtrate is evaporated to dryness in a china dish. What will be left in the dish after evaporation?

a) Iron filings

b) Sulphur

c) Sand

d) Common salt

Answer: (b)

Sulphur will left behind. As in given mixture only sulphur gets dissolved in carbon disulphide.

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1672 nature of matter and composition based general science mcq set 1 question answer with explanation pdf
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