Question

Solution a is prepared by mixing 1 g of urea in 100g of water and solution b is obtained by mixing 1g of glucose in 100g of water.which will have higher boiling point

Answer 1

boiling point of a liquid(a solvent) will be higher when another compound is added, meaning that a solutionhas a higher boiling point than a pure solvent. This happens whenever a non-volatile solute, such as a salt, is added to a pure solvent, such as water.
molality of both solutions is same.
so answer will depend on vant hoff factor i.
i in 1st case will be more so 1st solution will have higher bp