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Carbon supply in pack carburising process is in the form of

A. Charcoal

B. Calcium carbide

C. Hydrocarbon oil

D. Graphite

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  1. __________ the exhaust gas is an indication of the incomplete combustion of fuel.
  2. The difference between gross & net calorific values of fuel is due to the
  3. The yield point phenomenon observed in annealed low carbon steel is due to the presence of the following…
  4. Consumable electrodes are used in the __________ welding.
  5. A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure…
  6. Fog is an example of colloidal system of
  7. A material being tested for endurance strength is subjected to the __________ load.
  8. With increase in compression ratio, the volumetric efficiency of air compressor
  9. Which of the following is used to produce draught in the locomotive boilers?
  10. at 1173E; at equilibrium, what will be the number of moles of CO gas required to reduce one mole of…
  11. Basicity of the slag in Indian blast furnace is in the range of
  12. Which of the following metals is not subjected to electrolytic refining/purification?
  13. Removal of non-condensable from steam or other vapour is termed as the __________ process.
  14. A psychrometer does not measure the __________ temperature of moist air.
  15. The critical pressure at which the latent heat of vaporisation of steam becomes zero is __________ Kg/cm2.
  16. __________ number determines whether the fluid flow in an open channel is supercritical, critical or…
  17. With increase in impurities in metals, their corrosion resistances
  18. Lead is poured into the joint between two- __________ pipes.
  19. Out of the following, maximum temperature drop for a given heat flow & for the same thickness will be…
  20. Which of the following is an ore dressing operation?
  21. Window panes of aeroplanes are normally made of
  22. Blasting of tri-nitro-toluene (TNT) is done by mixing it with ammonium
  23. __________ can replace tungsten in high speed steel.
  24. Oxyacetylene reducing flame is used while carrying out welding on
  25. The 'laughing gas' is
  26. Suitability of steel for its use in cable is judged by its strength in
  27. Which of the following heat treatment processes is usually applied to castings?
  28. Strain hardening effect in metals subjected to cold working is due to the __________ mechanism.
  29. Identify the correct statement with reference to the extractive metallurgy of aluminium.
  30. Absolute zero pressure can be attained at a temperature of