Question

10. Blue litmus paper is dipped in a solution. It remains blue. What is the
nature of the solution? Explain.
11. Consider the following statements:
(a) Both acids and bases change colour of all indicators.​

Answer 1

Answer:

When blue litmus paper is dipped in a solution and it remains blue it shows that the solution is either basic or neutral in nature.Both acids and bases change the colour of all indicators. (B) If an indicator gives a colour change with an acid, it does not give a change with a base. (C) If an indicator changes colour with a base, it does not change colour with an acid.

Answer 2

Answer:

10. When blue litmus paper is dipped in a solution and it remains blue it shows that the solution is either basic or neutral in nature.

11. Change of colour in an acid and a base depends on the type of the indicator.