Which of the following is the salt formed from the neutralisation of potassium hydroxide solution and sulphuric acid?

The salt formed from the neutralisation of potassium hydroxide solution and sulphuric acid is potassium sulfate.

Here's the step by step process:

1. Identify the acid and base in the reaction. In this case, the acid is sulphuric acid (H2SO4) and the base is potassium hydroxide (KOH).

2. In a neutralisation reaction, the hydrogen ions (H+) from the acid react with the hydroxide ions (OH-) from the base to form water (H2O).

3. The remaining ions (K+ from KOH and SO4^2- from H2SO4) combine to form the salt.

4. Therefore, the salt formed is potassium sulfate (K2SO4).