Question

3. 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 the base.
c. If an indicator changes colour with the 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..
1 point
Which of the above statements are correct? *
All 4 statements
a &d
Ob&c
Only d​

Answer 1

Explanation:

a & d

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Answer 2

Answer:

only d is correct option.

Explanation:

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 (a).is incorrect. There are some indicators which changes colour with both acid and base, e.g. methyl orange, litmus, thus statement (b) and (c) are also incorrect. Statement (d) is the correct conclusion about indicators.

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