Detergents are known to pollute rivers and waterways. However, detergents can be made biodegdable and pollution free by taking

Options

A. benzenoid hydrocarbons
B. hydrocarbon with more branhing
C. unbranched with more branching
D. shorter lydrocarbon chain

Answer

C

Explanation

There is a foaming problem associated with branched alkylbenzene sulphonate `(ABS)` detergents in streams and in pipes, tanks and pumps of sewages treatment plants, such detergent are not biodegradable, that is they can't be broken down by bacteria.
Currently used linear - chain alkylbenzene sulphonate `(LAS)` detergents are biodegradable and do not cause foaming.
Note that the two detergents shown have each a `C_(12) H_(25)` tail but the branched one is not biodegradable.

Currently used linear-chain alkylbenzene sulphonate `(LAS)` detergents are biodegradable and do not cause foaming.

Note that the two detergents shown have each a `C_(12)H_(25)` tail but the branched one is not biodegradable,