Question

4. Which amongst the following is not an alkali?
(a) NaOH
(b) KOH
(c) Mg(OH)2
(d) NH4OH​

Answer 1

Answer:

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As NaOH  ,  KOH  ,  Mg(OH)₂ are basic as these are metal oxides.

The formula NH₄OH is ammonium hydroxide. It is a solution that is made up of ammonia and water. The pH of NH₄OH is 11.6, so it is a base.

So answer is none of these.