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The atomic mass of oxygen is

A. 12

B. 14

C. 16

D. 32

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  1. The __________ is obtained when carbonisation of coal is carried out at 500° to 700° C.
  2. The pull required to crush the rivet per pitch length is
  3. The deformation of a bar under its own weight compared to the deformation of same body subjected to…
  4. When a perfect gas is expanded through an aperture of minute dimensions, the process is known as
  5. The stress necessary to initiate yielding is
  6. The stress induced in a body, when suddenly loaded, is ________ the stress induced when the same load…
  7. When a beam is subjected to a bending moment, the strain in a layer is __________ the distance from…
  8. When the gas is cooled at constant pressure,
  9. The efficiency of Diesel cycle approaches to Otto cycle efficiency when
  10. In the below figure, the stress corresponding to point D is
  11. The value of 1 mm of Hg is equal to
  12. The efficiency of Diesel cycle with decrease in cut-off
  13. When a body is subjected to a direct tensile stress (σx) in one plane accompanied by a simple shear…
  14. The air standard efficiency of an Otto cycle is given by (where r = Compression ratio, and γ =…
  15. A column of length (l) with both ends fixed may be considered as equivalent to a column of length __________…
  16. Within elastic limit, stress is
  17. The atomic mass of sulphur is
  18. Percentage reduction in area performing tensile test on cast iron may be of the order of
  19. A process, in which the working substance neither receives nor gives out heat to its surroundings during…
  20. The distance between the centres of the rivets in adjacent rows of zigzag riveted joint is known as
  21. For a perfect gas, according to Boyle's law (where p = Absolute pressure, v = Volume, and T = Absolute…
  22. The fuel mostly used in cement industry and in metallurgical processes is
  23. The ultimate tensile stress of mild steel compared to ultimate compressive stress is
  24. When a body is subjected to biaxial stress i.e. direct stresses (σx) and (σy) in two mutually…
  25. The maximum diameter of the hole that can be punched from a plate of maximum shear stress 1/4th of its…
  26. The efficiency of the Carnot cycle is (where T1 and T2 = Highest and lowest temperature during the cycle)
  27. For riveting, the size of hole drilled in plates is __________ shank diameter of rivet.
  28. Modulus of rigidity is defined as the ratio of
  29. Which of the following is correct?
  30. A column is said to be a short column, when