M C Q s D r i v e

Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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Chemical Engineering MCQs designed for job test and interview preparation, particularly for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover important topics such as the fundamentals of chemical engineering, chemical processes, chemical reactions, process control, and instrumentation, along with other key concepts in the field.

Heating of ortho-phosphoric acid to about 900°C, produces_________________?
A Meta-phosphoric acid
B Pyrophosphoric acid
C No change in it
D None of these
Correct Answer: Meta-phosphoric acid
Ammonium nitrate (a fertiliser) is coated with limestone powder to ____________________?
A Increase its nitrogen content
B Cut down its production cost
C Avoid the risk of explosion
D Add extra nutrient as fertiliser
Correct Answer: Avoid the risk of explosion
Main component of bone ash is _________________?
A Calcium sulphate
B Calcium phosphate
C Calcium carbonate
D Sodium phosphate
Correct 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 ?
A Isopropyl alcohol
B Butyl alcohol
C Toluene
D Hexane
Correct Answer: Butyl alcohol
Reaction of calcium Fluorapatite with sulphuric acid produces ___________________?
A Ortho-phosphoric acid
B Simple superphosphate
C Triple superphosphate
D Red phosphorous
Correct Answer: Simple superphosphate
Ammonia synthesis gas is produced from fuel oil by _________________?
A Steam reforming
B Hydro-cracking
C Partial oxidation
D Hydrogenation
Correct Answer: Partial oxidation
Threshold limit value (TLV) i.e., the maximum permissible safe limit of phosgene gas which Hitler used to use to kill his enemies in ‘gas chamber’ is about ______________ ppm?
A < 1
B 10-100
C 100-200
D 100-1000
Correct Answer: < 1
Pick out the wrong statement?
A Loamy soil is the best soil for vigorous plant growth, while the clayey soil is solid and hence
B Large excess use of nitrogenous fertiliser in land causes the problem of diarrhoea and cyanosis
C Application of large excess of Potassic fertiliser in soil increases the valuable carotene in
D Cereal crops grown on alkaline soil absorb higher amount of fluorides thereby spreading
Correct Answer: Application of large excess of Potassic fertiliser in soil increases the valuable carotene in
Pick out the wrong statement?
A Yellow phosphorous which is the most reactive allotropic form of phosphorous is transported
B Apatite is the principal material present in phosphate rock which is chemically Ca10 (PO4)6 (F,
C Urea is more hygroscopic than ammonium nitrate
D Nitrogen fixation means the process of bringing atmospheric nitrogen into combination i.e.
Correct Answer: Urea is more hygroscopic than ammonium nitrate
Pick out the wrong statement?
A Dehydration of ammonium carbamate to produce urea is endothermic
B Direct use of liquid ammonia as a fertiliser for a tropical country like India is suitable
C Gypsum (CaSO4. 2H2O) is obtained as a by-product in the wet process for manufacture of
D Phosphate rock when reacted with dilute H2SO4 produces superphosphate
Correct Answer: Direct use of liquid ammonia as a fertiliser for a tropical country like India is suitable