A. Liquid sodium is employed as a coolant in nuclear reactors
B. Calcium carbonate is an ingredient of toothpaste
C. Bordeaux mixture consists of sodium sulphate and lime
D. Zinc amalgams are used as a dental filling
Answer: Option B
This Question Belongs to Chemistry GK Chapter Wise >> 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
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