Question

An aqueous solution turns blue litmus solution red Excess addition of which of the following
would reverse the change?
(a) Ammonium chloride solution
(b) Calcium sulphate solution
(c) Sodium hydroxide solution
(d) Zinc chloride solution​

Answer 1

Answer:

Since the aqueous solution turns blue litmus red, it is acidic in nature.

To reverse the change, i.e. to make red litmus blue again, we need to use a basic solution.

Of the four given solutions, only Sodium Hydroxide is a base, the rest are salts.

Hence, the answer is :                                                                                              (c) Sodium Hydroxide solution.

Answer 2

Answer:

C is the correct answer!!!!!!