Q2 of 23 Page 4

Write the molecular formula of the 2nd and the 3rd member of the homologous series whose first member is methane. (CBSE 2017)

The second member is ethane and formula is C2H6 and third member is propane C3H8. They belong to alkane group.

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1

Name the functional group of organic compounds that can be hydrogented.
(CBSE 2013, 2012)

 3

Write the name and structure of an alcohol with three carbon atoms in its molecule. (CBSE 2016)

 4

A compound ‘X’ has a formula C3H6. It decolourises bromine water. Write the chemical name of ‘X’. (CBSE 2009)

 5

State the reason why covalent compounds are generally poor conductors of electricity. (CBSE 2007)