Mercury is the only metal that remains liquid at 0°C. this is due to . . . . . . . .
A. Its low ionization capacity
B. Its high ionization energy and loose metallic bond
C. Its high vapour pressure
D. Its high molecular radius
Answer: Option B
A. Its low ionization capacity
B. Its high ionization energy and loose metallic bond
C. Its high vapour pressure
D. Its high molecular radius
Answer: Option B
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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