85. Austenitic manganese steel used for making jaws of crushing machines contains about __________ percent manganese.
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86. 18-4-1 high speed steel contains 18%, 4% and 1% respectively of
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87. SO3 is absorbed using H2SO4 in a
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88. How many molecules per unit cell are there in a face centred cubic lettice?
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89. Percentage elongation of a material is a measure of its
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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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91. Acid proof stoneware
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