Question

(a) Turmeric
(c) Blue litmus
Give three examples of everyday materials which contain (a) an acid, and (b) a base?
Give the colour changes, if any, of the following indicators with acids and bases
(b) China rose
(d) Red litmus
What is neutralisation? How is neutralisation helpful in the treatment of indigestion?
Why is it wise to neutralise the factory wastes before disposing off them into rivers or lakes?
What are salts? What are their uses? Name some salts commonly used in a laboratory.
Why does the pain caused due to an ant's sting get relieved by rubbing baking soda solution at the
place of sting?​

Answer 1

Answer:

Acid - lemon

Base- soap

China rose with acid - bright pink

China rose with base- green

Red litmus in base turns blue

And

Red litmus in acid stays red

Turmeric colour :

Yellow in acid and bright red in base

Blue litmus:

In acid - turns red

In base - stays blue