Question

A 0.6% solution of urea (mol. wt. 60) would be isotonic with

• A. 0.1 M glucose
• B. 0.1 M KCl
• C. 0.6% NaCl
• D. 0.6 glucose

Answer 1

The correct option is A 0.1 M glucose

$\text{0.6\% has molarity}=\frac{0.6}{60}\times \frac{1000}{100}=0.1$

$\text{After verifying with the given options,}$

$\text{As, KCl and NaCl is ionic it dissociates and}$

$\text{0.6\% glucose=0.3M}$

$\text{Hence, A. is correct option.}$