Home

Brass parts with high residual tensile stress at the surface are susceptible to season cracking (i.e. spontaneous cracking occuring on exposure to atmospheric corrosion), if its zinc percentage is more than

A. 5

B. 10

C. 20

D. 35

Related Questions

  1. Boiling point of water gets lowered at high altitudes (e.g., hills), because
  2. The malleability of a material is the property by virtue of which it can be rolled or hammered into…
  3. Plasma is
  4. Pick out the correct statement about the condensation.
  5. Hydro-cyclone is a
  6. Cold chisel & hammers are made of
  7. Alloying elements present in Haynes stellite, which has superior performance than high speed steel,…
  8. In condensers used in thermal power plants, steam is normally used in shell side and cooling water on…
  9. Titanium is produced by __________ of Ti Cl4.
  10. High speed steel tools retain their hardness upto a temperature of __________ °C.
  11. In Imperial Smelting Process for extraction of zinc, zinc vapour thus produced is quenched in the external…
  12. __________ iron is produced by the annealing of white cast iron.
  13. A compact estimate about the amount of materials handling between various work stations is obtained…
  14. Which of the following phenomenon will exhibit the minimum heat transfer?
  15. Stainless steel is welded with difficulty because of
  16. Which of the following is not a ferromagnetic material?
  17. In case of brasses, with decreasing zinc percentage and increasing copper percentage, its __________…
  18. The minimum carbon content in steel should be __________ percent for it to respond to a hardening treatment.
  19. Hardening of steel is not possible, unless it is heated __________ critical point.
  20. Pick out the correct combination about the role of various additives used in polymers.
  21. In the Bayer's process, bauxite is digested under pressure using
  22. Heating of ferromagnetic materials to a temperature above Curie temperature makes it
  23. Which of the following terminology is used for the temperature at which new grains are formed in a metal?
  24. Strain hardening effect in metals subjected to cold working is due to the __________ mechanism.
  25. Out of the following, the best material capable of withstanding shock & vibration without the danger…
  26. Nickel is a __________ material.
  27. Frother is added in the froth floatation cell used in ore beneficiation to stabilise the air bubbles…
  28. Which of the following is the largest quantum of pressure?
  29. Brittleness induced due to the presence of sulphur in steel can be reduced by adding
  30. Addition of silicon to cast iron

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