What colour does methyl orange give in a basic solution?

Correct answer: Yellow

Methyl orange responds to the acidity of the medium by changing its molecular form and colour. It is red in acidic solution and becomes yellow in a basic solution. Consequently, option B is correct. The red option describes its acidic response, whereas black and white are not characteristic colours in the methyl-orange acid-base test. The colour change therefore helps distinguish acidic and basic conditions.