List of top Chemistry Questions on Molality and Molarity asked in JEE Main

What is the mole fraction of water in \(10%\) by weight (w/w) of aqueous urea solution? [Given: Molar mass of H, O, C and N are 1, 16, 12 and \(14 \text{ g mol}^{-1}\) respectively.]

Density of 3 M NaCl solution is 1.25 g/mL. The molality of the solution is:

The molarity of a 70%(mass/mass) aqueous solution of a monobasic acid (X) is:

Quantitative analysis of an organic compound (X) shows the following percentage composition.
C: 14.5%
Cl: 64.46%
H: 1.8%
Empirical formula mass of the compound (X) is: