2. The statement/s that is/are correct with respect to indicators –
i) Both acids and bases do not change colour of any indicators.
ii) If an indicator gives a colour change with an acid, it does not give a
change with a base.
iii) If an indicator changes colour with a base, it does not change colour with
an acid.
iv) Change of colour in an acid and a base depends on the type of the
indicator
a) All four b) i and iv c) ii and iii d) only iv