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The casting method adopted for ornaments and toys of nonferrous alloys, is
This is used in applications for nonferrous construction:
The trade name of a nonferrous cast alloy composed of cobalt, chromium and tungsten is called
Which metal oxide is an amphoteric oxide?
Routers operate at layer _____. LAN switches operate at layer _____. Ethernet hubs operate at layer _____. Word processing operates at layer _____.
Which metal does not undergo corrosion due to the formation of oxide layer?
নিম্নের কোন oxide টিকে উভধর্মী oxide বলে?
The formation of oxide film on a metal due to atmospheric exposure reduces its
When the two elements of a pair have a surface contact when relative motion takes place and the surface of one element slides over the surface of the other, the pair formed is known as a
A semicircular disc rests on a horizontal surface with its top flat surface horizontal and circular portion touching down. The coefficient of friction between semi circular disc and horizontal surface is µ. This disc is to be pulled by a horizontal force applied at one edge and it always remains horizontal. When the disc is about to start moving, its top horizontal force will