Question
Fill in the blanks with the correct words from the brackets:
Alkenes are the (i) ........... (analogous/homologous) series of (ii) ............ (saturated/unsaturated) hydrocarbons. They differ from alkanes due to the presence of (iii) ......... (double/single) bonds. Alkenes mainly undergo (iv) .......... (addition/substitution) reactions.