Permanent hardness of water is due to the presence of calcium & magnesium __________________?

Related Mcqs:

Which of the following is not present in bagasse fibre ?

A. Cellulose B. Lignin C. Pentogens D. None of these...

Celluloid is chemically___________________?

A. Cellulose acetate B. Regenerated cellulose C. Cellulose nitrate D. Cellulose acetate butyrate...

Digestion of wood-base materials (for manufacture of pulp) is done to __________________?

A. Remove lignin B. Produce long fibres C. Prevent deterioration on storage D. None of these...

Which of the following contains least amount of N2 ?

A. Coke oven gas B. Blast furnace gas C. Producer gas D. Water gas (blue gas)...

Which is the most suitable dye for synthetic fibres ?

A. Acid dye B. Azoic dye C. Pigment dye D. Mordant dye...