Which one of the following types of coal contains a higher percentage of carbon than the rest ?

examrobotsa's picture
Q: 124 (IAS/1999)
Which one of the following types of coal contains a higher percentage of carbon than the rest ?

question_subject: 

Geography

question_exam: 

IAS

stats: 

0,215,59,29,18,12,215

keywords: 

{'bituminous coal': [0, 1, 0, 0], 'coal': [0, 1, 2, 0], 'lignite': [3, 0, 0, 0], 'carbon': [1, 0, 4, 5], 'peat': [2, 1, 2, 2], 'anthracite': [2, 1, 2, 1], 'types': [11, 3, 20, 23], 'higher percentage': [0, 1, 1, 0]}