Chemical Engineering MCQs

Page No. 40

Both white phosphorous as well as red phosphorous_________________?


aAre soluble in CS2

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bBurns when heated in air

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cReacts with hot caustic soda solution to give Phosphine

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dAll A., B., and C.

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Which of the following fertilisers is required for the development of fibrous materials of the plants and of the sugar of vegetable & fruits ?


aNitrogenous fertilisers

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bPhosphatic fertilisers

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c Potassic fertiliser

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d None of these

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Prilling tower is found in the flowsheet for the manufacture of__________________?


aAmmonia

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bUrea

✓


cSuperphosphate

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dTriple superphosphate

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View Answer Urea

Heating of ortho-phosphoric acid to about 900°C, produces_________________?


aMeta-phosphoric acid

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bPyrophosphoric acid

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c No change in it

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dNone of these

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View Answer Meta-phosphoric acid

Ammonium nitrate (a fertiliser) is coated with limestone powder to ____________________?


aIncrease its nitrogen content

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bCut down its production cost

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cAvoid the risk of explosion

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d Add extra nutrient as fertiliser

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Main component of bone ash is _________________?


aCalcium sulphate

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bCalcium phosphate

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cCalcium carbonate

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dSodium phosphate

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View Answer Calcium phosphate

Which of the following solvents is used for the extraction of H3PO4 from CaCl2 solution during manufacture of ortho-phosphoric acid by wet process employing hydrochloric acid leaching ?


aIsopropyl alcohol

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bButyl alcohol

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cToluene

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d Hexane

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View Answer Butyl alcohol

Reaction of calcium Fluorapatite with sulphuric acid produces ___________________?


aOrtho-phosphoric acid

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bSimple superphosphate

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cTriple superphosphate

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dRed phosphorous

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View Answer Simple superphosphate

Low grade coal is ______________ to produce ammonia synthesis gas?


aHydrogenated

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bLiquefied

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cGasified

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dDehydrogenated

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View Answer Gasified

Main constituent of phosphate rock is_____________________?


aAmmonium phosphate

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bFlour apatite

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cCalcium fluoride

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dCalcium phosphate

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View Answer Flour apatite

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