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Question

The indicator used in the titration of a strong acid and a strong base is/are :

A
phenolphthalein
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B
methyl orange
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C
alizarin yellow
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D
red litmus
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Solution

The correct options are
A phenolphthalein
B methyl orange
Any indicator having pH range between 3.5 to 10 will identify the equivalence point. This means that any one of phenolphthalein, methyl orange or bromothylmol blue could be used as an indicator.

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