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  1. A thin, flat & square plate measuring 2 m × 2 m is freely hanging in ambient air at 25°C.…
  2. In chemical dehumidification of air
  3. __________ is the process of coating the surface of steel with aluminium oxide, thereby imparting it…
  4. Addition of silicon to cast iron
  5. The minimum and the maximum number of members required to form a Private Limited Joint Stock Company…
  6. Steel rods are normally used for concrete reinforcement because concrete and steel have almost equal
  7. The condition of diffraction from a crystal is given by
  8. Hot extrusion process is not used for making
  9. The most prominent single cause of corrosion in boiler-tubes, drums, economisers and steam superheaters…
  10. The ability of tool steel to resist softening at high temperatures is termed as __________ hardness.
  11. One face of a furnace wall is at 1030°C and the other face is exposed to room temperature (30°C).…
  12. Volumetric composition of flue gas analysed with the Orsat apparatus is : CO2 = 12%, O2 = 8%, CO = nil,…
  13. Lap joints are preferred over butt joints in soldering/brazing, because these joints are
  14. Which of the following is not a principal alloying element for the structural steel?
  15. Pearlite comprises of
  16. Lead pencil contains
  17. __________ has the highest melting point out of the following.
  18. 'Cryogenics' is concerned with the generation & use of low temperature in the range of
  19. Starting friction is low in case of the __________ lubrication.
  20. For efficient performance of a blast furnace, the extent of reduction of Wustite (FeO) should be
  21. Limestone is added in the blast furnace (during pig iron manufacture) to
  22. __________ cannot increase the fatigue strength of a material.
  23. Material of construction of the electrode used in the electric resistance welding is
  24. The order of a chemical reaction
  25. Iron content in Indian iron ore is about __________ percent.
  26. Surface tension of a liquid
  27. L.D. (Linz-Donawitz) converter is used in the production of
  28. Common salt is produced from sea water in India generally by the __________ method.
  29. At the point of boundary layer separation in fluid flow, the
  30. High speed steel tools retain their hardness upto a temperature of __________ °C.