Question

preferably face and why?
OR
Explain any 3 natural indicators.
alorar​

Answer 1

Answer:

a) Some flowers like hydrangeas can determine the acidity or basicity of the soil. These flowers become blue if the soil is acidic, purple if the soil is neutral and pink if the soil is basic.

b) Turmeric is yellow in acid and neutral substances, but turns bright red with bases.

c) China rose (Gudhal) petals is of pink colour. It will change into dark pink (magenta) in acidic solution and green in basic solution.