What colour does methyl orange become in a basic solution?
Answer and explanation
Correct answer: Yellow
The governing concept is the colour change of an acid-base indicator. Methyl orange is red in an acidic medium and yellow in a neutral or basic medium. Therefore, when it is added to a basic solution, the observed colour is yellow. Pink and black are not the characteristic methyl-orange colours, and red indicates an acidic rather than a basic condition. Thus option B is the only correct answer.
Frequently asked questions
What is the correct answer to this question?
Yellow
Why is this the correct answer?
The governing concept is the colour change of an acid-base indicator. Methyl orange is red in an acidic medium and yellow in a neutral or basic medium. Therefore, when it is added to a basic solution, the observed colour is yellow. Pink and black are not the characteristic methyl-orange colours, and red indicates an acidic rather than a basic condition. Thus option B is the only correct answer.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
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