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Question

Methyl orange gives red colour in

A
KOH solution
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B
HCl solution
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C
Na2CO3 solution
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D
NaCl solution
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Solution

The correct option is B HCl solution
In a solution becoming less acidic, methyl orange moves from red to orange and finally to yellow with the reverse occurring for a solution increasing in acidity. The entire colour change occurs in acidic conditions. Therefore with HCl, it gives red colour.

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