What is acids? Give any two examples.
Acids are those chemical substances that gives hydrogen ions when dissolved in water.
For example: HCl -----> H+ + Cl-
H2SO4 -----> 2H+ + SO4--
Write down the major uses of base.
The major uses of base are:
i. It is used to make soap, detergent, etc.
ii. It is used to make bleaching powder.
iii. It is used to remove grease and stain from clothes.
iv. It is used for softening hard water.
v. It is used for purification of sugar and production of cements.