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:
1. | Mole fraction of glucose - 0.44; mole fraction of water - 0.56 |
2. | Mole fraction of glucose - 0.056; mole fraction of water - 0.944 |
3. | Mole fraction of glucose - 0.011; mole fraction of water - 0.99 |
4. | Mole fraction of glucose - 0.36; mole fraction of water - 0.64 |
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:
1. | 6.9 m | 2. | 17.9 m |
3. | 29.9 m | 4. | 21.9 m |
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.
2.
3.
4.
The type of molecular interactions in a solution of alcohol and water is:
1. | Electrostatic interaction | 2. | London dispersion forces |
3. | Hydrogen bonding | 4. | Ion-dipole interaction |
The graph representing Henry's law is given below:
The value of the slope will be
1. | \(4\times10^{-4}~\mathrm{torr}\) | 2. | \(5\times10^{-4}~\mathrm{torr}\) |
3. | \(4\times10^{4}~\mathrm{torr}\) | 4. | \(5\times10^{4}~\mathrm{torr}\) |
Points A and B in the below-mentioned graph represent, respectively:
1. | Partial pressures of first and second components |
2. | Vapour pressures of the pure second and first components |
3. | Partial pressures of second and first components |
4. | Vapour pressures of the pure first and second components |
The law represented by given graph is -
1. | Henry's law | 2. | Raoult's law |
3. | Boyle's law | 4. | Charle's law |
Which graph represents the positive deviation of vapor pressure?
1. | 2. | ||
3. | 4. | None of the above |
Which graph represents the elevation in boiling point?
1. | |
2. | |
3. | |
4. | None of the above. |
The following solutions were prepared by dissolving 10 g of glucose (C6H12O6) in 250 ml of water (P1), 10 g of urea (CH4N2O) in 250 ml of water (P2) and 10 g of sucrose (C12H22O11) in 250 ml of water (P3). The decreasing order of osmotic the pressure of these solutions is:
1. | P2 > P3 > P1 | 2. | P3 > P1 > P2 |
3. | P2 > P1 > P3 | 4. | P1 > P2 > P3 |