Answer: The correct answer is Option 4.
Explanation:
Methyl orange is an indicator use to indicate the acidity of the solution. It is used in the titarations of acids because it changes its color in the mid pH range of acids.
pH range for this indicator is 3.1 to 4.4
Below 3.1, this indicator has Red color and above 4.4, this indicator shows yellow color.
Therefore, at pH of 2, methyl orange will appear red.
Hence, the correct answer is option 4.
