Question

1. Match the items of Column 1 to those of Column 2.

Column 1
1. Melting
2. Vaporisation
3. Liquefaction
4. Freezing
5. Sublimation

Column 2
A. Water to steam
B. Cooling the molten iron
C. Camphor solid > Camphor vapour
D. Dry air > Liquid air
E. Solid sodium > Molten sodium​

Answer 1

Answer:

Explanation:

Recrystallisation • Recrystallisation: It is a method used to purify an organic solid. A small amount of the solvent is added to a flask containing an impure solid. The contents of the flask are heated until the solid dissolves. Then the solution is cooled.

Answer 2

Answer:

melting- solid sodium to molten sodium

vapourisation- water to steam

liquefaction- dry air to liquid air

freezing- cooling the moten iron

sublimation- camphor solid to camphor vapour

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