Question

The composition of phosphor bronze is _________

(a) 1% phosphorus, 10% tin and 89% copper

(b) 89% phosphorus, 10% tin and 1% copper

(c) 1% phosphorus, 89% tin and 10% copper

(d) 10% phosphorus, 1% tin and 89% copper

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

My query is from Non-Ferrous Metals and Alloys topic in chapter Steel, Timber, Mortar, Plastics, Non-Ferrous Metals and Alloys of Construction & Building Materials

Answer 1

Correct option is (c) 1% phosphorus, 89% tin and 10% copper

Easiest explanation: The composition of phosphor bronze is 1% phosphorus, 89% tin and 10% copper. Phosphor bronze is hard and strong and resists corrosion by sea water.