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At same temperature, which pair of the following solutions are isotonic?

#### Options

0.2 M BaCl

_{2}and 0.2 M urea0.1 M glucose and 0.2 M urea

0.1 M NaCl and 0.1 M K

_{2}SO_{4}0.1 M Ba(NO

_{3})_{2}and 0.1 M Na_{2}SO_{4}

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#### Solution

**0.1 M Ba(NO _{3})_{2} and 0.1 M Na_{2}SO_{4}**

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