Question

The percentage composition of copper and tin in speculum metal is _________

(a) 33% and 67%

(b) 67% and 33%

(c) 26% and 74%

(d) 74% and 26%

The question was asked by my school teacher while I was bunking the class.

This is a very interesting question from Non-Ferrous Metals and Alloys topic in portion Steel, Timber, Mortar, Plastics, Non-Ferrous Metals and Alloys of Construction & Building Materials

Answer 1

Right answer is (b) 67% and 33%

For explanation I would say: The percentage composition of copper and tin in speculum metal is 67% and 33% respectively. Speculum metal is silvery in colour and is used in making telescopes.