Q.

In coal, Sulphur is usually present in the extent of                      

A. 0.5-3%
B. 90-95%
C. 70-75%
D. 80-85%
Answer» A. 0.5-3%
Explanation: sulphur is generally present in the extent of 0.5 to 3% and is usually derived from ores like gypsum, iron pyrites, etc. high percentage of sulphur in coal is undesirable to be used for making coke in the iron industry since it affects the quality and properties of steel.
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