MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Inorganic Chemistryp-Block (group 13 and 14)Previous Year Questions

Darkening of surface painted with white lead is due to (CPMT 2009)

A.H2S✓ Correct

B.CO2

C.Cu

D.O2

Explanation

Darkening of surface with white lead is mainly due to the reaction of hydrogen sulphide in presence of air to produce a black coloured lead sulphide. Hence, the correct option is (a).

Back to Question Bank

Practice More Like This

Take chapter-wise tests, track your progress, and master p-Block (group 13 and 14).

Start Free Practice →