Question

Tiadiazole and triazole derivatives are used for __________

(a) Aluminium alloy corrosion

(b) Silver corrosion

(c) Copper corrosion

(d) Manganese corrosion

This question was addressed to me by my school teacher while I was bunking the class.

The question is from Types of Additives in section Lubricants of Applied Chemistry

Answer 1

Correct choice is (c) Copper corrosion

For explanation: The tiadiazole and triazole derivatives are used to protect the non ferrous metals from corrosion. They also protect the copper derivatives from corrosion. Organic phosphates and sodium and sodium and calcium sulphonates are used as the rust inhibitors in machinery.