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Assertion : PbS when heated with air und...

Assertion : PbS when heated with air undergoes self-reduction.
Reason : The PbO that is formed on heating PbS reacts further with PbS to yield Pb and `SO_2`

A

If both (A) and (R) are correct and (R) is the correct explanation of(A).

B

If both (A) and (R) are correct, but (R) is not the correct explanation of (A).

C

If (A) is correct, but (R) is incorrect.

D

If both (A) and (R) are incorrect.

Text Solution

Verified by Experts

The correct Answer is:
A
`2Pb + 3O_2 to 2PbO + 2SO_2`
`2PbO + PbS to 3Pb + SO_2`
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