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Chemical Process MCQs

Chemical Engineering Objective Questions

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113. Which form of sulphur is the most stable at room temperature?
A. Plastic
B. Monoclinic
C. Rhombic
D. Flowers of sulphur
Discussion
114. The function of gypsum addition during cement making is to
A. Increase the density of cement
B. Decrease the cement setting rate
C. Both A and B
D. Neither A nor B
Discussion
115. Commercial production of soda ash by Solvay process requires limestone, __________ as raw materials.
A. Coke and sand
B. Brine and coal
C. Coke and caustic soda
D. None of these
Discussion
116. Cellulose content of bamboo and ideal fibrous raw material for the manufacture of paper is __________ percent.
A. 10
B. 50
C. 80
D. 95
Discussion
117. Flash point of most vegetable oils is about __________ °C.
A. 50
B. 100
C. 200
D. 300
Discussion
118. In the Solvay process, the product from the calciner is
A. Light soda ash
B. Dense soda ash
C. Sodium bicarbonate
D. Dehydrated soda ash
Discussion
119. Low temperature carbonisation of coal takes place at __________ °C.
A. 300
B. 1100
C. 700
D. 900
Discussion

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