Question

A and B are the two solutions with pH 1 and 13 respectively. The colour of the solutions when tested with pH paper respectively are

• A. red and violet
• B. violet and yellow
• C. red and green
• D. orange and violet

Answer 1

The correct option is A red and violet

A solution with a pH value less than 7 represents an acidic solution, while a solution with pH value greater than 7 represents a basic solution. Solution A with a pH value of 1 is very acidic and the colour of pH paper turns red when dipped in it. Solution B with a pH value of 13 is very basic and the colour of pH paper turns violet when dipped in it.

Hence, the correct answer is option (a).