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JEE Main201911 Jan 2019Morning ShiftChemistryHydrogenActual

The correct statements among (a) to (d) regarding H ₂ as a fuel are : (i) It produces less pollutants than petrol. (ii) A cylinder of compressed dihydrogen weighs 30 times more than a petrol tank producing the same amount of energy. (iii) Dihydrogen is stored in tanks of metal alloys like NaNi ₅ (iv) On combustion, values of energy released per gram of liquid dihydrogen and LPG are 50 and 142 ~kJ , respectively.

Options

  1. A(ii) and (iv) only
  2. B(i) and (iii) only
  3. C(ii), (iii) and (iv) only
  4. D(i), (ii) and (iii) only

Correct answer

D. (i), (ii) and (iii) only

Step-by-step solution

option (i), (ii) and (iii) are correct.

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