1) The melting point of pure water is  a) 0° b) 78° c) 100° d) -210° 2) Purity of a substance can be estimated by a) Sublimation only b) Evaporation only c) Melting point and boiling point d) Melting point only 3) All of the following are career choice related to the study of chemistry except... a) Medical school b) Medical doctor c) Pharmacist d) Histologist 4) All off the following are the importance of chemistry except.. a) To cause pollution b) To make medicine c) To study infection and diseases d) To produce detergents 5) Which of the following is the basic unit of matter a) Atom b) Proton c) Compound d) Element 6) Name the branch of chemistry that deals with the study of the physical principles that underline the structure of matter and chemical transformations.. a) Analytical chemistry b) Biochemistry c) Organic chemistry d) Physical chemistry 7) What do we call the reaction were heat energy is given out from the system to the surrounding.. a) Condensation reaction b) Endothermic reaction c) Exothermic reaction d) Decomposition reaction 8) What do we call the mixture were the components are not evenly distributed? a) Immiscible mixture b) Homogeneous mixture c) Miscible mixture d) Pure mixture 9) Among the following factors, which one can affect the rate of diffusion? a) Rate of reaction b) Low temperature c) Pressure d) High pressure 10) Name a clear liquid obtained from fractional distillation a) Distillate b) Filtrate c) Sublimate d) Fraction

2.Introduction to chemistry-Classify the branches of chemistry

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