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Multiple Choice Questions

Which one among the following statements regarding the properties of mixtures and compounds is not correct?

  • A mixture shows the properties of its constituents but the properties of a compound are entirely different from its constituents

  • A mixture may be homogeneous or heterogeneous but a compound is a homogeneous substance

  • The constituents of a mixture can be separated by physical methods but those of a compound can not be separated by physical method

  • Energy is either absorbed or evolved during the preparation of a mixture but not in the preparation of a compound


Iodized salt is a:

  • a mixture of potassium iodide and common salt

  • a mixture of molecular iodine and common salt

  • a compound formed by the combination of potassium iodide and common salt

  • a compound formed by the combination of molecular iodine and common salt


Which one among the following is a chemical process?

  • Distillation of sea (salty) water

  • Crystallization of impure salt (NaCl)

  • Production of iodine (I2) from sea-weeds

  • Sublimation of iodine (I2)


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