Question

12.Consider the following statements, choose the correct one *
1 point
Both acids and bases change colour of all indicators.
If an indicator gives a colour change with an acid, it does not give a change with a base.
If an indicator changes colour with a base ,it does not change colour with an acid.
Change of colour in an acid and a base depends on the type of indicators.
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Answer 1

Answer:

D)

Step-by-step explanation:

Change of colour in an acid and a base depends on the type of indicators.

Answer 2

Answer:

All indicators do not change colour with acids as well as bases ,e.g. turmeric changes its colour to pink with base but it remains yellow with acid .

Therefore, statement 1 is incorrect. There are some indicators which changes colour with both acids and base , e.g. methyl orange, litmus , thus statement 2 and 3 are also incorrect .

Statement 4 is the correct conclusion about indicators.