GAT Subject
Engineering
Computer Science Civil Engineering Chemical Engineering Agricultural Engineering Mechanical Engineering Electronics and Communication
3. | 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 | |