Name the sodium compound which is used to permanently remove the hardness of water.
A. Sodium hydroxide
B. Sodium chloride
C. Sodium hydrogen carbonate
D. Sodium carbonate
Answer: Option D
This Question Belongs to Chemistry GK Chapter Wise >> Metal And Its Compounds
Related Questions on Metal and Its Compounds
Which of the following metals cannot be easily cut by a knife?
A. aluminium
B. sodium
C. potassium
D. lithium
The chemical structure of the pearl is
A. Calcium Carbonate
B. Calcium Carbonate & Magnesium Carbonate
C. Calcium Chloride
D. Calcium Sulphate
Stainless steel does not rust because
A. chromium and nickel combine with iron
B. chromium forms an oxide layer and protects iron from rusting
C. nickel present in it, does not rust
D. iron forms a hard chemical compound with chromium present in it
Join The Discussion