Name the technique to separate butter from curd

Asked by admin @ 24/08/2021 in Chemistry viewed by 356 People

Name the technique to separate

(i) butter from curd,
(ii) salt from sea-water,
(iii) camphor from salt.
NCERT Class IX
Sciences - Main Course Book
Chapter 2. Is Matter Around Us Pure

Answered by admin @ 24/08/2021

Centrifugation:

Centrifugation is done by using a machine called centrifuge.

Centrifugation is a method for separating the suspended particles of a substance from a liquid in which the mixture is rotated or spun at a high speed in a centrifuge.

Evaporation:

Evaporation is used to separate a solid substance that has dissolve in water or any other liquid.

The use of process of evaporation for separating a mixture is based on the fact that liquids vaporise easily whereas solids do not vaporise easily.

Sublimation:

The changing of a solid directly into vapours on heating and air vapour into solid on cooling is called sublimation.
The process of sublimation is used to separate those substances from a mixture with sublime on heating.

SOLUTION:

I) butter from curd- CENTRIFUGATION

ii) Salt from seawater-
EVAPORATION

iii) camphor from Salt-
SUBLIMATION

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Hope this will help you....

Name the technique to separate butter from curd

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