Question

Give solution for this question
A blue Litmus Paper was first dipped in dilute HCl and then in dilute NaOH solution. The colour of Litmus Paper will be

(a)Changed first to red and then to Blue

(b)Changed first to blue and then colourless

(c)Remains blue in both times

(d)Changed to red

Answer 1

(a) changed first to red and then to blue

Answer 2

In the given question, first the blue litmus paper was dipped in hydrochloric acid solution. Thus, the litmus would turn red. Further, when dipped in sodium hydroxide solution, it changes back to blue. Thus, the correct answer is D.

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