Hydrocarbons

An iodine value is a measurement used in analytical chemistry to determine the amount of unsaturation of oils and fats.

Ammoniacal is not used to distinguish ethane from ethene.

According to Saytzeff rule, in dehydrohalogenation reactions, the preferred product is that alkene which has the greater? number of 'alkyl groups attached to the doubly bonded carbon atoms. Thus, 2-bromoperttane gives pent-2-ene as the major product. .

The Wurtz reaction is a method used to couple two alkyl halides in the presence of sodium metal, forming alkanes. It works best with straight-chain alkyl groups. When branched alkyl groups are used, the reaction is less effective and often does not occur efficiently because the formation of a branched alkane requires more complex conditions. In this case, the compound in Option (B) with 8 carbon atoms is more branched and cannot be effectively synthesized through the Wurtz reaction. Thus, the correct answer is Option (B).