25.
೩6.
27.
29.
30.
81.
82.
38.
Which of the following material is used for making drills?
(A) णो) speed steel (B) carbide tipped
(0 carbon steel (D) any one of the above
The property of moulding sand due to which the sand grains stick together :
(A) cohesiveness (B) collapsibility
(C) permeability (D) ب٦272
Hack saw blade is specified by its :
{4} material (0) length<....
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