Thermoplastics are the polymers

Options

A. that can be moulded at room temperature of above but when heated more strongly become hard infusible dut ot formation of cross-links between the polymers chains.
B. that are hard at room temperature but on heating became soft and viscous, and can be moulded
C. that are amorphous and have elastic properties.
D. from which fibres used in textiles can be made

Answer

B

Explanation

The intemolecular forces of attraction in thermoplastic polymers are intermediate between elastomers and fibres. As a result, these can he easily mouled by heating.