Question

State why ? (Use key words) (i) Copper is used as thin wires . (ii) Zinc prevents rusting. (iii) A suspension of rust turns moist red litmus blue. *​

Answer 1

Answer:

(i)Because it is a good conductor of electricity and more cheaper than silver.It is also a ductile metal

(ii)Zinc is less reactive than iron. Therefore it prevents rust and is used as a coating in galvanization of iron.

(iii) Metal Oxides are acidic in nature. Therefore rust or iron oxide makes moist red litmus blue as it is acidic in nature.