Question

34. Name the method which can be used to separate :
(a) sand and water from their mixture.

(b) iron nails from saw-dust.
35. How do jewellers separate the pearls of different sizes?
36. How is the impurity of iron present in several substances removed in industries?
I Answer Type Questions​

Answer 1

Answer:

34 a) Sand and water are separated by sedimentation and decantation.

b) Iron nail and saw dust are separated by magnet

35) jewellery and pearls are separated by hand picking.

36 ) The impurity of iron present in several substances in the industries is removed using electromagnets

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Answer 2

Answer:

A ) Sedimentation and Decentation