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  1. Which of the following is a commonly used manometric liquid for low pressure range?
  2. Maximum permissible sulphur content in steel is __________ percent.
  3. Pick out the wrong statement.
  4. Which of the following is not an ore of copper?
  5. 'Ice point' is designated on Fahrenheit temperature scale by
  6. Heating of ferromagnetic materials to a temperature above Curie temperature makes it
  7. Diameter of the rivet to be provided on a 20 mm. thick boiler plate will be __________ mm.
  8. Which of the following low melting alloy containing bismuth and lead is used for electric fuse?
  9. Minimum safe distance between two liquid fuel storage tanks is equal to (where, H = height of the tank)
  10. In __________ process, there is an increase in entropy with no degradation of energy.
  11. The temperature at which ferromagnetic material can no longer be magnetised by the outside forces, is…
  12. Which of the following materials has the poorest electrical conductivity?
  13. Particle nature of cathode rays is proved due to the fact that they
  14. The cathode in an electrochemical cell always carries
  15. The product (s) of roasting of a sulphide ore is (are)
  16. __________ remains constant during the adiabatic cooling of moist air.
  17. Speisses is a mixture of the following:
  18. With increase in temperature, the surface tension of water
  19. Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air…
  20. Faraday's law of electrolysis is related to the
  21. Which of the following are made out of the carbon steel having carbon content of 0.9 to 1%?
  22. Percentage of argon (by volume) in dry atmospheric air is about
  23. Theoretical volume of oxygen required for complete combustion of 1Nm3 of acetylene, in oxyacetylene…
  24. The yield point phenomenon observed in annealed low carbon steel is due to the presence of the following…
  25. The refrigerant freon-12 is chemically
  26. Which of the following metals is the most prone to work hardening?
  27. To improve the machinability of steel, it is generally subjected to
  28. Pick out the wrong statement.
  29. Minimum thermal efficiency of a steam boiler may be around __________ percent
  30. At absolute zero temperature, for any reaction involving condensed phases