Question

Why is lead used in ceramic industry?

(a) To increase strength

(b) To increase water resistance

(c) To increase lustre

(d) To increase electrical conductivity

I had been asked this question in unit test.

This is a very interesting question from Lead in chapter Metallurgical Industries of Chemical Technology

Answer 1

The correct option is (c) To increase lustre

To explain I would say: Lead compounds impart low surface tension and low viscosity over a wide temperature range which results in smoothness and adds lustre.