Question

10. 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 and c
(iv) only d

Answer 1

Answer:

10.(a)both acid and bases change colour of all indicator

(i)all four

Explanation:

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Answer 2

Answer: (iv) Only (d) is correct

These indicators are a different colour in a basic environment than in an acidic environment. Since indicators are chemical compounds that change colour according to the pH of the solution they are put in. Examples: Litmus paper and Methyl orange.

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