Question

A, B and care 3 test tubes contains water, ald
and base respectively If you
have given only
red litmus paper. How will you identify the contents?
​

Answer 1

Answer:

Red litmus turns blue when the given sol. is base.

Red litmus doesn't change the color when dipped into water since it's neutral sol.

Now, take the litmus paper that was dipped into the base( i.e. the now blue litmus paper). This litmus will change it's color back to red when dipped into the acid.

Hope the answer helped. Have a Great Day ^ ^