Question

Consider the following statements:

(a) Both acids and bases change colour of all indicators.

(b) If an indicator gives a colour change with an acid, it does

not give a change with a base.

(c) If an indicator changes colour with a base, it does not

change colour with an acid.

(d) Change of colour in an acid and a base depends on the

type of the indicator.

Which of these statements are correct?

(i) All four

(ii) a and d

(iii) b, c and d

(iv) only d​

Answer 1

Answer:

ii a and d are the correct option