Playing with litmus paper
Chemistry
Level
pending
A boy puts a drop of dilute solution of sodium hydroxide first on a blue litmus paper and then on a red litmus paper. He would observe that
the blue litmus paper turns colorless and there is no change in the red litmus paper.
there is no change in the blue litmus paper and the red litmus paper turns blue.
there is no change in the red litmus paper and the blue litmus turns red.
the blue litmus paper turns red and the red litmus paper turns blue.
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