Question

Which of the following phenomenon occur when a small amount of acid is added to water?
(i) Ionisation
(ii) Dilution
(iii) Neutralisation
(iv) Salt formation

Answer 1

ionisation occur when a small amount of acid is added to water

Answer 2

The question given above seems to be incomplete,

The complete question is,

Which of the following phenomenon occur when a small amount of acid is added to water?

(i) Ionisation

(ii) Dilution

(iii) Neutralisation

(iv) Salt formation

   (a) (i) and (ii)

   (b) (i) and (iii)

   (c) (ii) and (iii)

   (d) (ii) and (iv)

The correct answer is  (i) and (iii).

Ionisation and Neutralisation.