Question

uestions
1. How will you separate a mixture
containing kerosene and petrol
(difference in their boiling points
is more than 25°C), which are
miscible with each other?
2. Name the technique to separate
(i) butter from curd,
(ii) salt from sea-water,
(iii) camphor from salt.
3. What type of mixtures are
separated by the technique o
crystallisation?

Answer 1

Answer:

1.A mixture of two miscible liquids having a difference in their boiling points of more than 25 °C can be separated by simple distillation. The mixture of kerosene and petrol is taken in a distillation flask with a thermometer fitted in this method.

2.Centrifugation method is used to separate butter from curd.

ii) Crystallisation is used to separate salt from water.

iii) Sublimation technique is used to separate camphor from salt.

3.This method is used to separate a solid-liquid mixture. When a solid is dissolved in a liquid, it can be separated from the mixture by evaporating the mixture that leaves behind crystals of the solid.