Page No. 692
Glycerine can be obtained from ________________ ?
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Permanent hardness of water is due to the presence of calcium & magnesium __________________?
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Deaeration of water in its treatment is necessary, as it___________________?
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Use of water having dissolved oxygen in boilers promotes___________________?
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Reaction of ethylene glycol and dimethyl terephthalate (DMT) produces ________________?
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Sudden temperature fluctuation does not affect pyrex glass, because of its __________________?
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Which of the following is a constituent of coffee ?
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Dacron (or Terylene) fibres as compared to nylon fibres have__________________?
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Common salt is generally not produced commonly by ________________ method from brine ?
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Flash point of most vegetable oils is about _______________ °C ?
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