1201. Solution with same osmotic pressures are called :
A. Hypertonic
B. Hypotoinic
C. Isontonic *
D. Normal
1202. The osmotic pressure of 1 m solution at 27 degree centigrade is :
A. 2.466 atm
B. 24.6 atm *
C. 1.21 atm
D. 12.1 atm
1203. Which substances are mixed to form a buffer solution ?
A. A powerful acid and its salt from a powerful base
B. Solid corrosive and its salt of feeble base
C. Frail corrosive and its salt areas of strength for of *
D. The weak acid and its weak base salt
1204. Halfway strain of an answer part is straightforwardly corresponding to its mole division. This statement is referred to as:
A. Henry’s law
B. Raoult’s law *
C. Distribution law
D. Ostwald’s dilution law
1205 The temperature at which a liquid’s vapour pressure equals the pressure outside is:
A. Melting point
B. Sublimation point
C. Inversion point
D. Boiling point *
1206. The following factors directly correlate with the freezing point depression:
A. Mole fraction of the solution
B. Molarity of the solution
C. Molality of the solution *
D. Molarity of the solvent
1207. The solubility of a gas in water depends upon:
A. Nature of the gas
B. Temperature
C. Pressure of the gas
D. All of the above *
1208. The following expression is used when the solute is present in trace amounts:
A. Gram per million
B. Milligram percent
C. Microgram percent
D. Parts per million *
1209. The solvent has a vapour pressure of 0.8 atm and a mole fraction of 0.25 at room temperature. The subsequent decrease in vapour pressure is:
A. 0.75
B. 0.60
C. 0.20 *
D. 0.80
1210. If liquids A and B combine to form a perfect solution:
A. There is no mixing enthalpy *
B. The entropy of mixing is zero
C. There is no free energy in mixing.
D. Both the entropy of mixing and the free energy are zero.