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  1. Which of the following is an ore dressing operation?
  2. Increase in temperature, in general results in the
  3. In case of a, centrifugal pump, the ratio h1/h2 is termed as the __________ efficiency (where, h1 =…
  4. Magnetic permeability of iron is increased by its
  5. Basicity of the slag in Indian blast furnace is in the range of
  6. __________ test can be termed as the semidestructive test.
  7. The product (s) of roasting of a sulphide ore is (are)
  8. Dielectric
  9. Hydro-cyclone is a
  10. During decarburising of a plain carbon steel, the thickness of ferrite layer growth is proportional…
  11. Pick out the wrong statement.
  12. Air intake for an air compressor should be preferably taken from
  13. Rankine cycle comprises of two isothermal and two __________ processes.
  14. When an isolated thermodynamic system executes a process,
  15. Angular displacement can be measured suitably by a
  16. Eutectic reaction for iron-carbon system occurs at a temperature of __________ °C.
  17. One of the methods of purification of leach liquor is ion exchange, which involves
  18. The amount of water evaporated in kg per kg of fuel burnt in a boiler is called the __________ of a…
  19. 'Cryogenics' is concerned with the generation & use of low temperature in the range of
  20. Metal cutting by oxy-acetylene flame is accomplished by the __________ of the metal.
  21. Dephosphorization of molten pig iron is favoured by
  22. A steam pipe is intended to be insulated with two layers of insulating materials of different thermal…
  23. The main constituent of bones is
  24. The amount of different substances produced, when the same quantity of electricity is passed through…
  25. Which of the following fastening devices has its both ends threaded?
  26. Steel rods are normally used for concrete reinforcement because concrete and steel have almost equal
  27. Ganister contains maximum percentage of
  28. Which of the following processes follows the hardening process for reducing the hardening strains &…
  29. Laser welding is widely employed in the __________ industries.
  30. The material used for coating the welding electrode is termed as the