Addition of __________ to steel does not help in improving its machinability.

A. Sulphur

B. Silicon

C. Lead

D. Phosphorous

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

You can do it
  1. An atom bomb works on the principle of
  2. __________ iron is produced by the annealing of white cast iron.
  3. Glass reacts with
  4. Holes for riveting purposes should be preferably made by
  5. Pick out the wrong statement.
  6. Screws are specified by their __________ diameters.
  7. Copper deposits are found in India at the following location:
  8. Which of the following is an example of cathodic protection of metals against corrosion?
  9. The atmospheric temperature during melting of ice/snow (in the atmosphere)
  10. Strain hardening effect in a metal subjected to cold working is due to the __________ mechanism.
  11. Pick out the wrong statement.
  12. Silicon percentage in silicon steel used for electrical equipments is about
  13. The most abundant metal present in the earth's crust is;
  14. Nitriding of a steel part does not increase its
  15. An ideal material for making cooking vessels should have
  16. Lap joints are preferred over butt joints in soldering/brazing, because these joints are
  17. Globular form of cementite is formed during the __________ process.
  18. Limestone addition in the blast furnace is done to flux __________ present in the raw materials.
  19. The life of a ball bearing is inversely proportional to
  20. Increase in temperature, in general results in the
  21. Silicon percentage in the silicon steel used for electrical appliances/equipments is
  22. __________ is the process used for setting up compressive stresses in the surface of a metal to improve…
  23. Powder metallurgy technique is used in the production of __________ tools.
  24. Pick out the wrong statement about coating/electroplating of metals.
  25. Limestone is added in the blast furnace (during pig iron manufacture) to
  26. Wave length of X-rays is about 1 angstrom; however it cannot pass through a sheet of
  27. The trace metal present in insulin is
  28. Presence of nickel & chromium in steel does not raise its
  29. Circular cross section machine parts which are symmetrical about the axis of rotation are made by hot
  30. Photographic plates are coated with