1What is a saturated hydrocarbon? Why are saturated hydrocarbons called paraffins?
2What is an unsaturated hydrocarbon? Why is it more reactive than a saturated hydrocarbon?
3Write the general formulas of alkanes, alkenes and alkynes. Use them to write the molecular formula of each with 4 carbon atoms and name it.
4Write the condensed formulas of propene and propyne, and describe how their structural formulas differ.
5What is hydrogenation? Write the equation for the hydrogenation of ethene and explain how Vanaspati ghee is made.
6Give three differences between saturated and unsaturated hydrocarbons.
7Why is there no alkene or alkyne with only one carbon atom?
8Identify the family of each: \( \mathrm{C_5H_{12}} \), \( \mathrm{C_2H_2} \), \( \mathrm{C_3H_6} \).
9Why does an alkene have two hydrogen atoms fewer than the alkane with the same number of carbons?