A) Urea
B) Glucose
C) Sucrose
D) NaCI
Correct Answer: D
Solution :
Urea, glucose and sucrose are covalent compounds and there is no ions in their aqueous solution. So, they are unable to conduct electricity. NaCI is an electrovalent compound. Its aqueous solution has \[\text{N}{{\text{a}}^{\text{+}}}\]and \[\text{C}{{\text{l}}^{-}}\]ions. Hence, it conducts electricity.
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