71. Which of the following material has maximum ductility?
72. The ability of a material to resist softening at high temperature is known as
73. The defect which takes place due to imperfect packing of atoms during crystallization is known as
74. The alloy used for making electrical resistances and heating elements is
75. The strength is the ability of a material to resist
76. The stiffness is the ability of a material to resist
77. Which of the following statement is wrong?
78. Delta iron occurs at temperature of
79. Which of the following elements does not impart hardness to steel?
80. The steel widely used for motor car crankshafts is
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