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If the crystals of a pure organic compou...

If the crystals of a pure organic compound do not appear even after cooling the hot solution after a long time, then it may be necessary to scratch the sides of the dish with glass rod or to treat the hot solution with a small crystal of the same susbstance. This provides tiny fragments of gl,ass or small particles of the inducing crystallization. This process of inducing cyrstallization by adding a crystal of the pure substance into its saturated solution is called

A

feeding

B

seeding

C

impfing

D

both (2) and (3)

Text Solution

Verified by Experts

The correct Answer is:
D
Seeding or impfing is the addition of fine particles to a solution to induce crystallization. Each particle (often a tiny crystal of the solute) acts as a nucleus upon which the new crystal grows.
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Knowledge Check

  • When a crystal of the solute is introduced into a super saturated solution of the solute

    A
    the solute dissolves
    B
    the excess solute crystallises out
    C
    the solution becomes unsaturated
    D
    the solution remains super saturated

  • When a crystal of a solute is introduced into a supersaturated solution of the solute :

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    the solute dissolves
    B
    the solution becomes unsaturated
    C
    the solution remains supersaturated
    D
    the excess of solute crystallises out

  • In the hot afternoon after a long walk, I rested under the shadow of a tree.

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    shelter
    B
    shade
    C
    cool
    D
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