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P. 2

PTO

                                                         MCQs
             1.    Which of the following is the correct method for finding melting point of ice?



















             2.     For the accurate determination of the boiling point of water, we use
                      (a) tap water         (b) distilled water

                       (c) salt water       (d) sugar solution


                    Which of the following apparatus is required to determine the boiling point of water?
             3.       (a) Tripod stand, conical flask, thermometer, wire gauze, stand with clamp, pair of
                      tongs,
                      (b) Funnel, burner, clamp and stand, test tube, thermometer, wire gauge, stand with
                      clamp
                      (c) Boiling tube, beaker, thermometer, burner cork with one hole, stand with clamp,
                      wire                                                                              gauze
                      (d) Round bottom flask, burner, thermometer, wire gauze, stand with clamp, cork with
                      two holes, glass tube.


             4.    In the determination of boiling point of water, it is advised to put the bulb of the
                   thermometer above the water rather than in water, it is to:
                   (a) reduce the error due to atmospheric pressure
                   (b) make sure that boiling point is accurate even when water sample contains non-
                   volatile impurities dissolved
                   (c) reduce the error due to expansions of glass because of heat
                   (d) obtain the boiling point accurately even in a much short time.
















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