1) The process of heating a liquid mixture to form vapours and then cooling the vapours to get pure component is called ____________ a) Crystallisation b) Distillation c) Chromatography d) Sublimation 2) Porcelain pieces are put into the distillation flask to avoid ____________ a) Overheating b) Uniform boiling c) Bumping of the solution d) None of the mentioned options 3) Distillation operation involves one of the following steps a) Vaporization b) Vaporisation and condensation c) Vaporisation, condensation and crystallization d) Vaporisation, condensation, crystallization and drying 4) The separation of liquid by distillation is based on one of the following principles a) Boiling point b) Miscibility c) Vapor pressure d) Viscosity 5) One of the following theories is not applicable to distillation a) Graham’s law of diffusion b) Law of conservation of energy c) Raoult’s law 6) Distillation does not involve in one of the following processes a) Evaporation b) Extraction c) Purification d) Separation 7) Raoult’s law is applicable to one of the following types of distillation processes a) Flash distillation b) Fractional distillation c) Molecular distillation d) Simple distillation 8) Which part in the distillation apparatus represents the heat exchanger? a) Adapter b) Condenser c) Receiver d) Still 9) Claisen flask for distillation consist of one of the following number of necks? a) Four b) Three c) One d) Two 10) Which type of distillation known as evaporative distillation? a) Simple distillation b) Flash distillation c) Molecular distillation d) Fractional distillation 11) Vacuum pump is attached to one of the following parts of distillation apparatus? a) Adopter b) Receiver c) Condensor d) Still 12) Water for injection is prepared using one of the following distillation methods? a) Flash distillation b) Simple distillation c) Fractional distillation d) steam distillation 13) Molecular distillation is used for the purification of one of the following substances. a) Carbohydrates b) Fat c) Volatile oils d) Proteins 14) steam distillation used for the separation of: a) Essential oils b) Mineral oils c) Fatty acids d) Petroleum fractions 15) Mean free path is associated with: a) Azeotropic distillation b) Steam distillation c) Molecular distillation d) Destructive distillation

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