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Some statement(s) is/are given below. ...

Some statement(s) is/are given below.
I. Rust is hydrated ferric oxide
II. Saline water slows down rusting
III. Pure metals undergo corrosion faster than impure metals
IV. Fe does not undergo corrosion when placed in vacuum
Among the above

A

I, II and III are true

B

I and III are false

C

I and IV are true

D

II and IV are false

Text Solution

Verified by Experts

The correct Answer is:
C
A-rust is `"Fe"_(3)"O"_(4)*"xH"_(2)"O"`
D-Fe undergoes corrosion in presence of `O_(2)` and `H_(2)O` present in air. If air is not present, i.e. in vacuum, it does not corrode.
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