Q: 124 (IAS/1999)

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Which one of the following types of coal contains a higher percentage of carbon than the rest ?
question_subject: 
Geography
question_year: 
1999
question_exam: 
IAS
question_sub_subject: 
Physical Geography
question_topic: 
Lithosphere
stats: 
0,4568,1208,672,352,184,4568