41. Self supporting arches for furnace roofs can be fabricated using silica bricks but not using magnesia bricks. Why?
42. Silicon carbides resist oxidation up to
43. Dissociation of dislocation occurs
44. Austenising of samples for TTT diagram is done
45. What are the operations of forging?
46. The continuity equation is based on
47. The burger vector for Face-centred cubic material is . . . . . . . .; Where ao is the lattice parameter.
48. Multispot welding process is
49. Mark the matter with least value of thermal conductivity
50. A fluid which is incompressible & having no viscosity is known as
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