In which of the sols, the colloidal particles are with negative charge? (1) Hydrated Al2O3 (2) TiO2 (3) Haemoglobin (4) Starch
A liquid compound (x) can be purified by steam distillation only if it is (1) Not steam volatile, immiscible with water (2) Steam volatile, immiscible with water (3) Not steam volatile, miscible with water (4) Steam volatile, miscible with water
If 8 g of a non-electrolyte solute is dissolved in 114 g of n-octane to reduce its vapour pressure to 80%, the molar mass (in g mol–1) of the solute is [Given that molar mass of n-octane is 114 g mol–1] (1) 20 (2) 40 (3) 60 (4) 80
The size of a raw mango shrinks to a much smaller size when kept in a concentrated salt solution. Which one of the following process can explain this ? (1) Dialysis (2) Reverse osmosis (3) Osmosis (4) Diffusion
Which of the following is dependent on temperature? (a) Molarity (b) Mole fraction (c) Weight percentage (d) Molality
If molality of the dilute solution is doubled, the value of molal depression constant (Kf) will be (a) halved (b) tripled (c) unchanged (d) doubled.
20 mL of 0.1 MH2SO4 solution is added to 30 mL of 0.2 M NH4OH solution. The pH of the resulatant mixture is : [pkb of NH4OH = 4.7]. (1) 9.4 (2) 5.0 (3) 9.0 (4) 5.2
The increasing order of pKa of the following amino acids in aqueous solution is : Gly Asp Lys Arg (1) Asp < Gly < Arg < Lys (2) Arg < Lys < Gly < Asp (3) Gly < Asp < Arg < Lys (4) Asp < Gly < Lys < Arg
Which one of the following statements regarding Henry's law not correct ? (1) The value of KH increases with function of the nature of the gas (2) Higher the value of KH at a given pressure, higher is the solubility of the gas in the liquids. (3) The ...
Measuring Zeta potential is useful in determining which property of colloidal solution ? (1) Viscosity (2) Solubility (3) Stability of the colloidal particles (4) Size of the colloidal particles