Question

An alkali which dissociates partially on passage of an electric current is:

• A. sodium hydroxide
• B. nickel metal
• C. ammonium hydroxide
• D. copper

Answer 1

Answer: (C)

ammonium hydroxide

We have,

Sodium chloride is an ionic compound which is already present in the ionic form and completely dissociated on the passage of electric current,

Nickel and copper metal have higher reduction potential so, reduction takes place on passage of electric current,

ammonium hydroxide is a weak base it is partially dissociated on the passage of electric current.