Question

Alkali and Acid definition ​

Answer 1

Answer:

$\bold{Alkali-}$

➡Alkali is a base which neutralises hydrochloric acid in the body and avoids acidity.

$\bold{Acid-}$

➡ Acid is any substance that in water solution tastes sour and changes the colour of certain indicators.

Answer 2

Answer:

An acid is a substance that has a pH lower than 7. For example, hydrochloric acid, sulphuric acid, citric acid, ethanoic acid (vinegar). ... An alkali is a soluble substance with a pH higher than 7. For example, sodium hydroxide (used to make soap), potassium hydroxide, oven cleaner, toothpaste, shampoo.