Question Detail

What is the hardest form of carbon ?

coke
graphite
charcoal
diamond

Answer: Option D

Similar Questions :

1. Which have maximum number of isotopes ?

Bromine
Aluminium
Polonium
Carbon

Answer: Option C

2. Acid rain is due to air pollution by ?

Carbon dioxide
Carbon monoxide
Methane
Nitrous oxide and Sulphur dioxide

Answer: Option D

3. What among following is used to produce artificial rain ?

copper oxide
carbon monoxide
silver iodide
silver nitrate

Answer: Option C

4. Acids taste

Sour
Sweet
May be both
None of both

Answer: Option A

5. The luster of a metal is due to :

high polishing
high density
chemical inertness
presence of free electrons

Answer: Option D

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