Engineering Questions with Answers - Multiple Choice Questions
Unit Processes MCQ’s – Technical Preparations
1 - Question
What is the formula of formaidehyde-bisulfite ?
a) HOCH2SO3Na
b) CH3SO3Na
c) HOCH2SO4
d) HOCH3SO2Na
View Answer
Explanation: formaidehyde-bisulfite also called as “sodium hydroxymethanesulfonate” also, has the following formula HOCH2SO3Na.
2 - Question
What is the use of Lauryl sulphate?
a) Foaming agent
b) Cleaning agent
c) Drying agent
d) Wetting agent
View Answer
Explanation: Lauryl sulphate is used in soap because of its excellent detergent quality and foaming properties.
3 - Question
What is the other name of Dodecylbenzene?
a) Alkyl benzene
b) Detergent alkylate
c) Benzoate alcohol
d) None of the mentioned
View Answer
Explanation: Detergent alkylate is also called Dodecylbenzene.
4 - Question
The quinone is sulfonated with 20 per cent oleum in the presence of which catalyst?
a) Mercury sulfate
b) Magnesium sulfate
c) Chlorine
d) Zinc sulphate
View Answer
Explanation: Anthraquinone-I-sulfonate (Potassium Salt), the quinone is sulfonated with 20 per cent oleum in the presence of mercury sulfate catalyst.
5 - Question
Acetanilide is reacted with chlorosulfonic acid to yield what?
a) Sulfonyl acetate
b) Sulfonyl anilide
c) Sulfonyl chloride
d) None of the mentioned
View Answer
Explanation: The Chlorosulfonation of Acetanilide, here Acetanilide is reacted with chlorosulfonic acid to yield the sulfonyl chloride, which is used as an intermediate for nearly all sulpha drugs.
6 - Question
Aniline sulfate is converted to sulfanilic acid by “baking”.
a) True
b) False
View Answer
Explanation: Sulfanilic Acid from Aniline, here Aniline sulfate is converted to sulfanilic acid by “baking”, the following reaction is : H2NC6H5-H2SO4 ——> H2NC6H5SO3H + H20.
7 - Question
Complete the following reaction: (CH3)2O + SO3 ——> _______ .
a) (CH3)2SO
b) (CH3)2SO2
c) (CH3)2SO3
d) (CH3)2SO4
View Answer
Explanation: The process is know as Sulfation of Dimethyl Ether with SO3, and the reaction is: (CH3)2O + SO3 ——> (CH3)2SO4.
8 - Question
The production of Ethanol from Ethylene is done in which type of process?
a) Batch process
b) Continuous process
c) Semi batch process
d) All of the mentioned
View Answer
Explanation: The process operates under fully continuously process.
9 - Question
The conversion of Ethylene to Ethanol is which type of reaction?
a) Exothermic
b) Endothermic
c) Neutral
d) None of the mentioned
View Answer
Explanation: The conversion of ethylene to ethanol is highly exothermic, therefore there is a need to use heat exchangers.