91. An oil is converted into fat by its
92. Reaction of ethylene glycol and dimethyl terephthalate (DMT) produces
93. Portland cement consists mainly of
94. Pick out the wrong statement pertaining to the properties of glasses. Glasses generally have
95. The compressive strength of cement should not be less than about 110 Kg/cm2 after three days & not less than 170 Kg/cm2 after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about __________ cm2/gm.
96. Electrodeposition of metals i.e. electroplating is never done on
97. Viscosity index improver (like polystrene or polyisobutylene) is added to lubricant to
98. P.T.F.E. (Poly tetra fluoro ethylene) is commercially known as
99. Lindane is
100. Litharge is
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