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  1. Material of construction of foundry crucible is
  2. Quartz is a __________ material.
  3. Which of the following properties of a solid is not dependent on crystal imperfection?
  4. Energy to be supplied to the radioactive nucleus for the emission of a neutron is __________ MeV.
  5. Which of the following is an ore dressing operation?
  6. Stellite is a __________ material.
  7. Use of flux during soldering is done to
  8. If Reynolds number is greater than 1, then the
  9. Which of the following is a boiler accessory i.e., not a boiler mounting?
  10. __________ is the most suitable lubricant for drawing mild steel wires?
  11. Galvanic corrosion cannot be prevented by
  12. Strain hardening effect in a metal subjected to cold working is due to the __________ mechanism.
  13. Moist climate is the most favourable factor in the site selection far a
  14. Depreciation of machines fails under the indirect expenses head. As per income tax regulations, it is…
  15. Internal energy of a gas obeying Van-Der- Waals equation of state, [p + (a/v2)] (V - b) = RT, depends…
  16. Dies for wire drawing are generally made of
  17. Out of the following, the most malleable material is
  18. __________ can replace tungsten in high speed steel.
  19. The wet bulb temperature is lower in dry air than in wet air at the same temperature. A dry bulb thermometer…
  20. Heating of ferromagnetic materials to a temperature above Curie temperature makes it
  21. Which of the following is not used as a bearing material?
  22. Preheating before welding is done to
  23. Current employed in resistance welding ranges from __________ kVA/.
  24. The concentration of (H+) ions is 4 x 10-5 in a solution. Then pH of the solution will be (Given log…
  25. Function of gear box is to
  26. Alloys having more than 80% copper are generally more
  27. Matte smelting is used in the extraction of
  28. Which of the following has the highest value of refractive index?
  29. Aluminium is extracted from
  30. Ultimate strength in tension as compared to that in shear for steel is