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Assertion : In an acid-base titration involving strong base and a weak acid, methyl orange can be used as an indicator.
Reason : Methyl orange changes its colour in $\mathrm{pH}$ range of 7 to 9 .
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Reason : Methyl orange changes its colour in $\mathrm{pH}$ range of 7 to 9 .
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The correct answer is:
If both assertion and reason are false.
In a titration of strong base and weak acid phenolphthalein is used as indicator.
Methyl orange changes its colour in $\mathrm{pH}$ of range 3 to 5.
Methyl orange changes its colour in $\mathrm{pH}$ of range 3 to 5.
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