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Question

Fill in the blanks :  [5 MARKS]
(i) Members of the alkene series containing ....... to ....... number of carbon atoms are liquids.
(ii) Among isomers, the one with more branched chain has a ...... boiling point.
(iii) The term ....... is used when one carbon atom is attached to four other carbon atoms.
(iv) The molecular mass of any two homologues differs by ....... amu.
(v) The melting point of alkanes increases with ....... in molecular weight.


Solution

Each Part: 1 Mark

(i) Members of the alkene series containing 5 to 15 number of carbon atoms are liquids.
(ii) Among isomers, the one with more branched chain has a lower boiling point.     
(iii) The term neo is used when one carbon atom is attached to four other carbon atoms.
(iv) The molecular mass of any two homologues differs by 14  amu.         
(v) The melting point of alkanes increases with increase in molecular weight.  

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