Statement A: Molecular mass of benzoic acid when determined by colligative properties is found high.Statement B: Dimerisation of benzoic acid.
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a
Both Statement A and Statement B are true
b
Both Statement A and Statement B are false
c
Statement A is true but Statement B is false.
d
Statement A is false but Statement B is true.
answer is A.
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Detailed Solution
Colligative properties are the properties of solutions containing nonvolatile solute. It is correct that molecular mass of benzoic acid when determined by colligative properties is found abnormally high. This is because dimerisation of benzoic acid takes place in solution resulting high molecular mass.