1What is a base? Prepare a list of the bases used in daily life.
2Write the physical properties of base.
3What is a salt? Write its main kinds.
4Write the difference between an acid and a base.
5Write the difference between baking soda and common salt.
6Write the difference between lemon water and soap water.
7Soap is put where an ant has stung but vinegar where a wasp has stung. Explain both.
8Salts are said to be neutral, yet washing soda turns red litmus blue. How can both be true?
9Why is an antacid tablet a base, and how does it cure gastritis?
10Why does adding curd or lemon to baking soda make a dough rise faster?