………….is necessary for human life.
a) NaCl
b) CaSO4
c) CaCO3
d) CuSO4
…………. is used for seasoning and preserving of food.
a) CaCO3
b) CuSO4
c) NaCl
d) CaSO4
In industry, NaCl is used as raw material for the extraction of………….material.
a) Ag
b) Na
c) K
d) Mg
NaCl is used in the preparation of caustic soda and………….
a) washing soda
b) soda Ash
c) baking soda
d) all of these
Major application of …………. is deicing of roadways in sub-freezing weather.
a) sodium chloride
b) sodium carbonate
c) sodium sulphate
d) sodium bicarbonate
………….is also known as washing soda
a) sodium carbonate
b) sodium carbonate
c) sodium sulphate
d) calcium sulphate
D is right.
by at 2025-03-28 04:09:56