Question

1. Identify in the following reaction:

2PbO +C→2Pb +CO

a) the substance oxidised and

b) The substance reduced.

2. A shiny brown coloured element “x” on heating in air becomes black incolour .

Name the element “x” and the black coloured compound formed.​

Answer 1

1)PbO is Lead (II) Oxide that is reduced to Lead (Pb) and Carbon or C is oxidized to CO2 or Carbon dioxide.

2)Copper is the brown coloured element X which on heating in air becomes black coloured compound copper oxide.

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