Question
How is bakelite prepared?

Answer

In the third stage, various articles are shaped from novolac by putting it in appropriate moulds and heating at high temperature $\left(138^{\circ} C\right.$ to $\left.176^{\circ} C \right)$ and at high pressure forms rigid polymeric material called bakelite. Bakelite is insoluble and infusible and has high tensile strength.

Image
Bakelite is used in making articles like telephone instrument, kitchenware, electric insulators frying pans, etc.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free