In olden days people were using washing soda for washing clothes.
Can washing soda be useful to clean clothes in all types of water? Justify your answer.

In olden days people were using washing soda for washing clothes. What is washing soda?

We use soaps and detergents for washing clothes. But in olden days people were using washing soda for that purpose. Can washing soda be used to clean clothes in all types of water. Justify your answer.

In olden days people were using washing soda for washing clothes, i. What is washing soda?

In olden days people were using washing soda for washing clothes. Write the chemical formula.

Calcium oxide (CaO) is used as dry- ing agent in the preparation of Am- monia in laboratory. Can concen- trated H_2SO_4 be used as drying agent instead of CaO? Justify your answer.