Select the correct option from the given choices. 1) The sum of mole fractions of all components in a binary system of solutions is a) 2 b) 1 c) 0 d) 3 2) If 0.1m solution of gluco... Select the correct option from the given choices. 1) The sum of mole fractions of all components in a binary system of solutions is a) 2 b) 1 c) 0 d) 3 2) If 0.1m solution of glucose freezes at -2.1°C, then 0.1m solution of NaCl freezes at a) 2.1°C b) -4.2°C c) -2.1°C d) -1.5°C 3) In the experiment of depression in the freezing point a) Vapour pressure of solution is less than that of solvent b) Vapour pressure of solution is more than that of solvent c) Vapour pressure of solution is equal to that of solvent d) Only solute particles solidify at the freezing point 4) The electrolyte showing Van't Hoff factor (i) less than unity is a) NaOH b) NH4OH c) KOH d) NaCl 5) The most suitable colligative property to measure the molecular mass of polymer is a) Relative lowering of vapour pressure b) Elevation of boiling point c) Osmotic pressure d) Depression in the freezing point 6) The degree of dissociation of weak electrolyte can be calculated by a) α = cm / a0m b) α = a0m / am c) α = (a0m + 1) / am d) α = (a0m - 1) / am 7) During electrolysis of brine solution which of the following ions prefer to undergo oxidation at anode a) H+ b) Cl- c) OH- d) Na+ 8) The quantity of charge required to obtain 1 mol of Aluminium from Al2O3 is a) 1F b) 6F c) 3F d) 2F 9) The E° of Fe, Zn and Sn are -0.44 V, -0.76 V and -0.14 V respectively. Which metal is/are act as reducing agent for iron? a) Both Zn and Sn b) Zn only c) Neither Zn nor Sn d) Sn only. Read more