The incorrect formula among the following is:

1.	\(\text X_{\text{mole fraction}}=\frac{\text n_{\text{solute}}}{\text n_{\text{solution}}}\)
2.	\(\text{Molarity}=\frac{\text{amount of solute (g)}}{\text{volume of solution (mL)}}\)
3.	\(\text{Molality}=\frac{\text{Number of mole of solute}}{\text{amount of solvent (kg)}}\)
4.	\(\text{Mass percentage}=\frac{\text{mass of the component in the solution}}{\text{Total mass of the solution}}\times100 \)

The density of 68 % nitric acid by mass in an aqueous solution is 1.504 g mL^–1. The molarity of the acid solution would be:
1. 15.24 M
2. 16.23 M
3. 14.52 M
4. 13.45 M

A solution of glucose (M.W = 180 g mol^–1) in water is 10 % w/w. The mole fraction of each component in the solution is:

An antifreeze solution is prepared from 222.6 g of ethylene glycol (C₂H₆O₂) and 200 g of water. The molality of the solution would be:

A drinking water sample was found to be contaminated with chloroform at a level of 15 ppm (by mass). What is the mass percent of chloroform in the sample?

1. $15\times {10}^{-4}$

2. $1.5\times {10}^{-4}$

3. $0.15\times {10}^{-4}$

4. $15\times {10}^{-5}$

The type of molecular interactions in a solution of alcohol and water is:

The graph representing Henry's law is given below:

The value of the slope will be

Points A and B in the below-mentioned graph represent, respectively:

The law represented by given graph is -

Which graph represents the positive deviation of vapor pressure?

1.		2.
3.		4.	None of the above