Question

What do we observe on pouring acetic acid on red and blue litmus papers ? (A) Red litmus remains red and blue litmus turns red. (B) Red litmus turns blue and blue litmus remains blue. (C) Red litmus turns blue and blue litmus turns red. (D) Red litmus becomes colourless and blue litmus remains blue.

Answer 1

red litmus remains the same and blue litmus turns red

Answer 2

A) Red litmus remains red and blue litmus turns red
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as acetic acid is an acid it will show this property 

it is an weak acid