Chemical Engineering :: Chemical Process
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For the hydrogenation of oils __________ (A) __________ is commonly used as catalyst and __________ (B) __________ is a catalyst poison.
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Main constituents of natural rubber is
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Highly porous refractory bricks are
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Fumigant insecticides
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Which of the following is an endothermic reaction ?
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Fermentator temperature during production of alcohol from molasses is around __________ °C.
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Which of the following coals has the highest calorific value ?
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Which of the following is not an abrasive material ?
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Pick out the wrong statement.
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A.
Hard glass which is used for making laboratory glass wares is a mixture of sodium borosilicate and aluminium borosilicate.
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B.
Glass is decolorised during its manufac-ture by adding antimony oxide, mangnese dioxide or arsenic oxide.
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C.
Ordinary glass is represented chemically by Na2O . CaO . 6SiO2.
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D.
Red color is imparted to glass by addition of arsenic oxide.
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