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One molecule of oxygen is __________ times heavier than the hydrogen atom.

A. 12

B. 14

C. 16

D. 32

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  1. The assumption made in Euler's column theory is that
  2. When coal is first dried and then crushed to a fine powder by pulverising machine, the resulting fuel…
  3. Reversed joule cycle is called
  4. The energy absorbed in a body, when it is strained within the elastic limits, is known as
  5. Two closely coiled helical springs 'A' and 'B' are equal in all respects but the number of turns of…
  6. A riveted joint in which every rivet of a row is opposite to other rivet of the outer row, is known…
  7. Which of the following statement is correct?
  8. In a reversible adiabatic process, the ratio of T1/T2 is equal to
  9. The ultimate tensile stress of mild steel compared to ultimate compressive stress is
  10. The compression ratio for petrol engines is
  11. For the same compression ratio, the efficiency of Diesel cycle is __________ Otto cycle.
  12. A double strap butt joint with equal straps is
  13. When a body is subjected to a direct tensile stress (σ) in one plane, then maximum normal stress…
  14. Which of the following materials is most elastic?
  15. If Th is the torque resisting capacity of a hollow shaft and Ts is that of a solid shaft, of the same…
  16. The pressure exerted by an ideal gas is ________ of the kinetic energy of all the molecules contained…
  17. If percentage reduction in area of a certain specimen made of material 'A' under tensile test is 60%…
  18. The gas constant (R) is equal to the __________ of two specific heats.
  19. When the gas is heated at constant volume, the heat supplied
  20. The efficiency of Diesel cycle increases with
  21. Which of the following gas has the highest calorific value?
  22. A column of length (l) with both ends fixed may be considered as equivalent to a column of length __________…
  23. One Joule (J) is equal to
  24. The radius of the Mohrs circle in the given figure is equal to
  25. The change of entropy, when heat is absorbed by the gas, is
  26. When shear force at a point is zero, then bending moment is _________ at that point.
  27. Stirling and Ericsson cycles are
  28. When the gas is cooled at constant pressure,
  29. The smallest quantity of a substance, which can exist by itself in a chemically recognizable form is…
  30. The percentage reduction in area of a cast iron specimen during tensile test would be of the order of