Which is not a monomer for a high molecular mass silicone polymer?

The polymer $\begin{array}{*{20}{c}} {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,CH_3\,\,\,\,\,\,\,\,\,\,\,\,\,CH_3} \\ {\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|} \\ {{( - CH_2 - C - CH_2 - C - )}_n} \\ {\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|} \\ {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,CH_3\,\,\,\,\,\,\,\,\,\,\,\,\,CH_3} \\ \end{array}$ is formed from which monomer unit?

Which of the following statements is incorrect?

Which polymer is used in orthopedic devices and in controlled drug-release capsules?

Match the following:

List-$I$ (Use)	List-$II$ (Substance)
$A$. Electrodes in batteries	$II$. Polyacetylene
$B$. Welding of metals	$III$. Oxyacetylene
$C$. Toys	$I$. Polypropylene

The correct answer is

The polymer containing five methylene groups in its repeating unit is