Question

Coke is produced

a.

when coal is first dried and then crushed to a fine powder by pulverising machine

b.

from the finely ground coal by moulding under pressure with or without a binding material

c.

when coal is strongly heated continuously for 42 to 48 hours in the absence of air in a closed vessel

d.

by heating wood with a limited supply of air to a temperature not less than 280°C

Answer: (c).when coal is strongly heated continuously for 42 to 48 hours in the absence of air in a closed vessel

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Q. Coke is produced

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