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Which of the following gas has a minimum molecular mass?

A. Oxygen

B. Nitrogen

C. Hydrogen

D. Methane

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  1. One kg of ethylene (C2H4) requires 2 kg of oxygen and produces 22/7 kg of carbon dioxide and __________…
  2. The general law for the expansion or compression of gases, is
  3. The total energy of a molecule is shared equally by the various degrees of freedom possessed by it.…
  4. The absolute zero pressure can be attained at a temperature of
  5. The torsional rigidity of a shaft is expressed by the
  6. The heat supplied to the gas at constant volume is (where m = Mass of gas, cv = Specific heat at constant…
  7. A composite bar made up of steel and copper bars of equal lengths are heated through 100°C. The…
  8. When a thin cylindrical shell is subjected to an internal pressure, the volumetric strain is (where…
  9. A path 1-2-3 is given. A system absorbs 100 kJ as heat and does 60 kJ of work while along the path 1-4-3,…
  10. Kelvin-Planck's law deals with
  11. The area under the temperature-entropy curve (T - s curve) of any thermodynamic process represents
  12. The reading of the pressure gauge fitted on a vessel is 25 bar. The atmospheric pressure is 1.03 bar…
  13. The ratio of lateral strain to the linear strain within elastic limit is known as
  14. The percentage reduction in area of a cast iron specimen during tensile test would be of the order of
  15. Relation between cp and cv is given by (where cp = Specific heat at constant pressure, cv = Specific…
  16. In a steady flow process, the ratio of
  17. Coke is produced
  18. A series of operations, which takes place in a certain order and restore the initial conditions at the…
  19. The absolute zero pressure will be
  20. The atomic mass of oxygen is
  21. Euler's formula holds good only for
  22. Which of the following statement is correct?
  23. The absolute zero temperature is taken as
  24. Which of the following statement is correct?
  25. For a perfect gas, according to Boyle's law (where p = Absolute pressure, v = Volume, and T = Absolute…
  26. The thickness of a thin cylindrical shell with hemispherical ends is __________ that of spherical ends.
  27. Within elastic limit, stress is
  28. The air standard efficiency of an Otto cycle is given by (where r = Compression ratio, and γ =…
  29. When a body is subjected to three mutually perpendicular stresses, of equal intensity, the ratio of…
  30. The point of contraflexure is a point where