Question

Given below are the results of solutions tested with universal paper indicator.
Sulphuric acid Red
Metal polish Dark Blue
Washing up liquid Yellow
Milk of Magnesia Light Blue
Oven cleaner Purple
car battery acid Pink
Arrange the solutions with increasing pH values.​

Answer 1

Explanation:

Sulphuric acid < car battery acid < washing up liquid < milk of magnesia < metal polish < oven cleaner since:

Red : pH = 1

Pink : pH = 3-4

Yellow: pH = 5-6

Light blue : pH = 9

Dark blue : pH = 10

Purple: pH = 11