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.Management Sciences
Category: Chemical Process
Low temperature carbonisation of coal takes place at _______________ °C ?
0
A. 300
B. 1100
C. 700
D. 900
Calcareous & argillaceous materials are used in the manufacture of ___________________?
A. Lead
B. Cement
C. Carbon disulphide
D. None of these
Conversion of SO2 to SO3 in Monsanto 4-pass converter is about ____________________ percent?
A. 80
B. 90
C. 98
D. 100
Stereospecific agents are exemplified by________________?
A. Radiation
B. Supported metal oxide catalysts
C. Ziegler catalysts
D. All A , B. & C
Which of the following coals has the highest calorific value ?
A. Lignite
B. Sub-bituminous
C. Anthracite
D. Peat
______________________ of quicklime produces slaked lime ?
A. Hydration
B. Dehydration
C. Hydrogenation
D. None of these
Most commonly used rubber vulcanising agent is___________________?
A. Sulphur
B. Bromine
C. Platinum
D. Alumina
Nitrogen is an essential component of ____________________?
A. Mineral salts
B. Carbohydrates
C. Fats
D. Proteins
Pick out the wrong statement?
A. Dry process is used for the manufacture of cement, when the raw material is blast furnace slag
B. Portland cement is made employing wet process
C. Gypsum is added to Portland cement to lengthen its setting time
D. None of these
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