'Softening of lead' means :

CHEMISTRY · Single correct · CBSE · Chemistry · Metals and Non-metals · Metals and Non-metals

Problem

'Softening of lead' means : (1) conversion of lead to

\text{PbO}

(2) conversion of lead to

\text{Pb}_3\text{O}_4

(3) removal of impurities (metallic) from lead (4) washing lead with

\text{HNO}_3

followed by alkali solution