Question

What will be the outcome of putting litmus paper into milk?

A.red paper turns blue, blue paper turns red
B.red paper turns blue, blue paper does not change
C.red paper does not change, blue paper turns red
D.red paper does not change, blue paper does not change

Answer 1

A. Red paper turn blue , blue paper turns red

Answer 2

C

Step-by-step explanation:

The litmus paper have an reaction with the compound, if the compound is acid (pH lower than 7), the red paper will remain red and the blue paper will turn to red, and if the compound is bacis (pH higher than 7), the red paper will turn blue and the blue paper will remain blue.

As the milk has a pH lower than 7, we can affirm that the red paper will not change and the blue papper will turn red.