Question

please tell correct answer

Answer 1

1st one is the answer i think

Answer 2

When the blue litmus turns red, it indicates that the solution is aqueous. Before the addition of sodium hydroxide, the chemical nature of the solution is acidic.
And after adding of sodium hydroxide the red litmus turn blue, indicating basic solution.
So, the chemical nature of of the solution before the addition of NaOH the solution is acidic and after adding it turn to basic solution.
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