51. Which of the following metals can not be hot worked at room temperature?
52. Improvement in mechanical properties of metals in its hot working is due to the grains
53. High __________ of cast iron makes it suitable for use in machine beds.
54. __________ test determines the yield strength, Young's modulus of elasticity, percentage reduction in area & percentage elongation of a material.
55. Duralumin is an alloy of aluminium and copper. Percentage of copper in duralumin is
56. Stainless steel is welded using
57. Pick out the wrong statement about the machinability of metals. Machinability of a metal
58. Steel rods are normally used for concrete reinforcement because concrete and steel have almost equal
59. Temper brittleness of a material can be fairly detected by the __________ test.
60. Hardening of steel is not possible, unless it is heated __________ critical point.
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- Chemical Engineering Basics - Section 1
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- Chemical Engineering Basics - Section 13