A) Urea
B) Barium chloride
C) Potassium bromide
D) Aluminum sulphate
Correct Answer: A
Solution :
\[KBr={{K}^{+}}+B{{r}^{-}}=2\] ions \[BaC{{l}_{2}}=B{{a}^{2+}}+2C{{l}^{-}}=3\]inos \[A{{l}_{2}}{{(S{{O}_{4}})}_{3}}=2A{{l}^{3+}}+3SO_{4}^{2-}=5\]ions \ urea is not ionise hence it is shows highest freezing point.
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