25. The addition of a polar solvent to a solid electrolyte results in (a) Polarization (b) Association (c) Ionization (d) Electron transfer 26. The degree of dissociation of HCNM1.0 solution is 0.01%. Its ionisation constant would be [RPMT 1999] (a) 310 (b) 510 (c) 710 (d) 910 27. The hydrogen ion concentration in weak acid of dissociation constant aKand concentration c is nearly equal to [CBSE PMT 1989; RPMT 2000] (a) cKa/ (b) aKc/ (c) cKa (d) cKa 28. Degree of dissociation of COOHCHN31.0 is (Dissociation constant 5101) [MP PET 1997] (a) 510 (b) 410 (c) 310 (d) 210 29. Which of the following substance is an electrolyte [MADT Bihar 1980] (a) Chloroform (b) Benzene (c) Toluene (d) Magnesium chloride 30. In weak electrolytic solution, degree of ionization (a) Will be proportional to dilution (b) Will be proportional to concentration of electrolyte (c) Will be proportional to the square root of dilution (d) Will be reciprocal to the dilution 31. 0.2 molar solution of formic acid is ionized 3.2%. Its ionization constant is [MP PMT 1991] (a) 3106.9 (b) 4101.2 (c) 61025.1 (d) 5108.4 32. The best conductor of electricity is a 1.0 M solution of [NCERT 1973] (a) Boric acid (b) Acetic acid (c) Sulphuric acid (d) Phosphoric acid 33. The colour of an electrolyte solution depends on [DPMT 1985] (a) The nature of the anion (b) The nature of the cation (c) The nature of both the ions (d) The nature of the solvent 34. Ionisation depends upon [CPMT 2004] (a) Pressure (b) Volume (c) Dilution (d) None of these
Correct option is C) Polar solvent facilitates ionisation of strong electrolytes due to dipole-ion attraction.
