Chemical Industry Multiple Choice Questions on “Lead”.
1. Lead is used as a sheathing material on cables.
a) True
b) False
Answer: a
Clarification: Lead is used as a sheathing material on cables to prevent ingress of moisture. It is an important strategic material.
2. 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
Answer: c
Clarification: Lead compounds impart low surface tension and low viscosity over a wide temperature range which results in smoothness and adds lustre.