1. State differences between acids and bases.
Differences between acids and bases are given below:
| Acids | Bases | |
| 1 | Turns blue litmus paper into red | Turns red litmus paper to blue |
| 2 | They are sour in the test | They are bitter on test |
| 3 | Acids do not change the colour of the turmeric indicator | They change the colour of the turmeric indicator |
| 4 | They are not soapy in touch | They are soapy in touch |
| 5 | Eg: - HCL | Eg:- NaOH |