A student tested the nature of four different solutions P, Q, R, and S using pH paper. He noted the following observations:

Question

	P	Q	R	S
Colour of the pH paper after testing	Blue	Green	Red	Violet

Which of the above solutions is neutral in nature?

Accepted Answer

Q Reason — On the pH scale, a neutral solution (pH 7) turns pH paper green. Red indicates an acidic solution, while blue and violet indicate basic (alkaline) solutions. Hence, solution Q (green) is neutral.

A student tested the nature of four different solutions P, Q, R, and S using pH paper. He noted the following observations:

More ICSE Class 10 Chemistry questions