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Which of the following statements are co...

Which of the following statements are correct?
(1) Muscular contraction is a very fast process.
(ii) Reaction between `BaCl_(2)` and `H_(2)SO_(4)` is a fast process.
(iii) Rusting of iron is a slow process.
(iv) Rust of iron is `Fe_(2)O_(3).xH_(2)O`

A

(i), (i) and (iii)

B

(ii), (iii) and (iv)

C

(i) and (iii)

D

All of these

Text Solution

Verified by Experts

The correct Answer is:
D
Muscular contraction is a very fast process. `BaCl_(2)` and `H_(2)SO_(4)` both produce lons In aqueous solution and lonic reactions are generally fast, so this reaction is also a fast process. Rusting of iron is a slow process and the formula of rust is `Fe_(2)O_(3) xH_(2)O` (hydrated ferric oxide). Thus, all the given statements are found true.
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