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

Question : 21

Which of the following is a compound ?

a) Graphite

b) Bronze

c) Stainless steel

d) Hydrogen sulphide

Question : 22

Which of the following is an example of a heterogeneous substance?

a) Pieces of copper

b) Table salt

c) Bottled water

d) Candle

Question : 23

In which of the following the constituents are present in any ratio?

a) Solution

b) Compound

c) Mixture

d) Colloid

Question : 24 [NDA]

Which one of the following mixtures is homogeneous?

a) Graphite and charcoal

b) Starch and sugar

c) Methanol and water

d) Calcium carbonate and calcium bicarbonate

Question : 25

Normal solution is :

a) one litre containing one equivalent

b) acidic solution

c) inert solution

d) basic solution