81. Zinc is highly __________ at room temperature.
82. Brine solution is stored/treated in __________ lined vessels/pipes.
83. High speed cutting tool steels contain about __________ percent of tungsten.
84. Fermenter used in the production of pen-cillin by deep fermentation proces is a __________ lined steel vessel
85. Austenitic manganese steel used for making jaws of crushing machines contains about __________ percent manganese.
86. 18-4-1 high speed steel contains 18%, 4% and 1% respectively of
87. SO3 is absorbed using H2SO4 in a
88. How many molecules per unit cell are there in a face centred cubic lettice?
89. Percentage elongation of a material is a measure of its
90. Failure of a material is termed as fatigue failure, if it fails below the yield point. The resistance to fatigue failure of a material is measured by the
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