Q.
Colligative properties are observed when
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a
a non-volatile solid is dissolved in a volatile liquid
b
a non-volatile liquid is dissolved in another volatile liquid
c
a gas is dissolved in non-volatile liquid
d
a volatile liquid is dissolved in another volatile liquid
answer is A.
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Detailed Solution
When any one of the components of binary mixture either solvent or solute is non-volatile, it causes deviation in vapour pressure of solution which causes change in its colligative properties.
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