Question

Classify the following as homogeneous mixture and heterogeneous mixture.
Sugar solution in water, air, soil, petrol, chalk and water mixture, sea water, biogas, coal.

Answer 1

Homogeneous
Water,petrol,water mixture,sea water
Heterogeneous
Air,soil,chalk,biogas,coal

Answer 2

ANSWER:

• Homogeneous mixture are water, water mixture, petrol, sugar solution in water, sea water.  

• Heterogeneous mixture are coal, biogas, chalk, soil, air.

EXPLANATION:

'Homogeneous mixture' is a type of mixture in which there are similar compounds present that can be similar in chemical composition, shape, physical appearance, nature, etc.

'Heterogeneous mixture' is a type of mixture in which there are different compounds present in a mixture which differ in chemical composition and physical appearance.

As we can see that bio-gas and coal are the mixture of many dead remains of different plants and animals which could have different physical and chemical compositions. Also in the case of air and soil, soil is the mixture of different organic and inorganic components, and the air is mixture of gases.