CTET 2 Math and Science Sep 2014 Paper

Question : 70 of 120

Marks: +1, -0

A student 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 red and the red litmus paper turns blue
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 paper turns red
the blue litmus paper turns colourless and there is no change in the red litmus paper

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