$\begin{array}{1 1} \text{(a) (i) It is widely used in household products (ii) involve in conversion for precursors for plastics.} \\ \text{(b)(i) It is widely used in household products (ii) involve in conversion for precursors for plastics.}\\ \text{(c) i) In preserving biological specimens (ii) It is also used as an antiseptic in sterilising surgical instruments.} \\ \text{(d) None of the above} \end{array} $
