Methods of Separation in Everyday Life Class 6 Short Question Answer

Methods of Separation in Everyday Life Class 6 Short Question Answer

Methods of Separation in Everyday Life Class 6 Short Question Answer

Question 1.

Name and describe briefly a method which can be helpful in separating a mixture of husk from grains. What is the principle of this method?

Answer:

Winnowing. This method is based on the principle that the lighter particles are carried away by the wind.

Question 2.

A mixture of iron nails, salt, oil and water is provided to you. Give stepwise methods to separate each component from this mixture?

Answer:

(a) Iron nails - hand picking/magnet

(b) Oil - decantation

(c) Salt, water-evaporation and condensation

Question 3.

What is evaporation?

Answer:

The process of conversion of a liquid into its vapour is called evaporation.

Question 4.

Both Sarika and Mohan were asked to make salt solution. Sarika was given a teaspoonful of salt and half a glass of water, whereas Mohan was given twenty teaspoons full of salt and half a glass of water.

(a) How would they make salt solutions?

(b) Who would be able to prepare saturated solution?

Answer:

(a) They will mix salt with water to make salt solution.

(b) Mohan’s solution would be saturated because in Mohan’s case some salt would remain undissolved and settle at the bottom of the glass.

Question 5.

Explain any three methods of separation of substances.

Answer:

1. Handpicking: Used to separate slightly larger sized impurities like pieces of dirt, stone from wheat, rice, etc.
2. Decantation: When the water (along with dust) is removed.
3. Sedimentation: When the heavier component in a.mixture settles down after water is added to it.