11. __________ possesses viscoelastic properties.
12. Fatigue failure of a material results from __________ stress.
13. __________ is added in stainless steel to prevent inter crystal corrosion.
14. __________ is never shipped in glass carboys.
15. Neutraliser tank used for reacting nitric acid with ammonia for the production of ammonium nitrate is made of
16. Trough of an apron conveyor is made of
17. Presence of cobalt in steel improves its
18. Most suitable material of construction for the storage of concentrated nitric acid is
19. Which of the following pairs of elements may form an alloy?
20. The damage/deterioration of metals by the __________ action of fluids is called 'erosion'.
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