Statement I ; Glycerol is purified by vacuum distillation
Statement II ; Naphthalene is purified by crystallization
Statements I and II are correct
Statement I is correct and statement II is incorrect
Statement I is incorrect and statement II is correct
Statements I and II are incorrect
Glycerol is purified by vacuum distillation, it decomposes much below its boiling point;
Naphthalene is purified by sublimation.