Chemistry PYQ 2023

Chemistry PYQ

Q. Which of the following statements is not correct about rusting of iron?

(jee mains 2023)

1. Coating of iron surface by tin prevents rusting, even if the tin coating is peeling off.

2. When pH lies above 9 or 10, rusting of iron does not take place.

3. Dissolved acidic oxides SO2, NO2 in water act as catalyst in the process of rusting.

4.Rusting of iron is envisaged as setting up of electrochemical cell on the surface of iron object.

(1) - As tin coating is peeled off, then iron is exposed to atmosphere.

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