Which of the following is/are liquefied petroleum gas?
A) methane
B) butane and propane
C) ammonia
D) nitrogen oxide
Correct Answer:
Verified
Q16: Which of the following best describes net
Q17: Which statement characterizes petrochemicals?
A) They are impurities that
Q18: What is the net energy ratio of
Q19: What has the highest net energy ratio
Q20: What is net energy?
A) It is the total
Q22: How does natural gas compare to coal?
A) Natural
Q23: What is characteristic of both oil shale
Q24: What percentage of the world's electricity is
Q25: In how many years will global coal
Q26: Which of the following is NOT contained
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