December 2021

Sodium carbonate is a basic salt because it is a salt of a

Rain is called acid rain when its:

What is the pH range of our body?

Nettle sting is a natural source of which acid?

Which of the following statements is correct about an aqueous solution of an acid and of a base?

Alkalis are

Chemical formula of washing soda is

How many water molecules does hydrated cal-cium sulphate contain?

Sodium hydroxide turns phenolphthalein solution

At what temperature is gypsum heated to form Plaster of Paris