A few materials are listed in the given box.

Select the incorrect statement regarding these materials.

Options

A. Materials (i) and (iv) are derived from natural sources and are completely biodegradable.
B. Materials (ii) and (v) contain linear polymer chains and become soft on heating.
C. Materials (iii) and (vi) have polymer chains with crosslinks which help them to change shape on heating.
D. None of these

Answer

C

Explanation

Bakelite and melamine have polymer chains with crosslinks which make them more resistant to heat and more thicker.