Methyl orange indicator turns_____________________?
Correct answer: A. Orange yellow in alkaline medium
- A. Orange yellow in alkaline medium
- B. Orange yellow in acidic medium
- C. Colourless in acidic medium
- D. Colourless in basic medium
Explanation
Methyl orange is red in acidic solution and changes through orange to yellow as the solution becomes alkaline. Hence its alkaline-end colour is orange-yellow, while colourless is not its characteristic colour.
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