Question

Activity 4: (Page 49)
1. Take petals of blue colour flower and put them in a test tube filled with a small amount of acid.
What do you observe?

Answer 1

Answer:

It will turn red as acid turn blue litmus papers to red similarly it will turn red

Answer 2

Some flowers are indicators of acid and base. They change color when they come in contact with acid or base.

Since the color of the flower is blue, so the petals will also have blue color.

Now, when we mix these blue petals with acid, the petals will become more pinkish type in color.

And we mix the blue colored petals with base, the petals will show more blue color.