___ current is preferred for electrolysis.

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Solution

Direct current(DC) is preferred because, we will be getting smooth coating and the phase of current here is same at any point of time.

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Q.
___ current is preferred for electrolysis.

___ current is used for the electrolysis process.

Q. Give a reason for the following:
In the electrolysis of acidified water, dilute sulphuric acid is preferred to dilute nitric acid for acidification.

The methods for extracting metals from their ores are:

1. roasting a metal sulphide

2. chemical reduction of a metal oxide

3. electrolysis,

The preferred method depends on

E^{\circ}

value for the reducing half-reaction:

$M^{n +} (a q) + n e^{-} \to M (s)$

Which method is preferred for the metals with the most positive

E^{\circ}

values?

For the electrolysis of acidulated water, dilute sulphuric acid $d i l . H_{2} S O_{4}$ is preferred over dilute nitric acid $d i l . H N O_{3}$ for acidification.

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