JEE Main 2019 Chemistry question
Not in JEE Main or NEET syllabus
The correct statements among (a) to (d) regarding H as a fuel are: (a) It produces less pollutants than petrol. (b) A cylinder of compressed dihydrogen weighs ~30 times more than a petrol tank producing the same amount of energy. (c) Dihydrogen is stored in tanks of metal alloys like NaNi. (d) On combustion, values of energy released per gram of liquid dihydrogen and LPG are 50 and 142 kJ, respectively.
Answer: (C)
Solution
(d) is wrong: liquid H gives 142 kJ g and LPG about 50 kJ
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