Question

how china rose is used as an indicator class 7​

Answer 1

Answer:

Soak some petals of china rose in warm water for a couple of hours. The red-coloured solution is used as an indicator for detecting an acid or a base solution. It turns into magenta in acidic medium and green in basic medium. Hence, it is a natural indicator.

Explanation:

Hope that helps you

Answer 2

Answer:

By soaking china rose petals into hot water for half an hour it creates a solution that can be used as an acid-base indicator and this is how we make china rose indicator. China rose indicator turns basic solution to green. an indicator determines the Acidic or Basic nature of substance by changing its colour.