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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.

All Topics  9594

Pick out the wrong statement ?
A Nitrogen is normally supplied in fertiliser either in Ammoniacal or the nitrate form, from
B Calcium present in the fertiliser helps in correcting the soil acidity
C Particle size range of a good granular fertiliser is 10-15 mesh and it contains less moisture as
D Ammonium nitrate fertiliser is obtained as a by-product in an integrated steel plant having byproduct
Correct Answer: Ammonium nitrate fertiliser is obtained as a by-product in an integrated steel plant having byproduct
Pick out the wrong statement ?
A ‘Green acid’ is the other name of phosphoric acid produced by the reaction of phosphate rock
B Chemically unreactive nature of red phosphorous is due to its polymeric structure
C Red phosphorous is the most reactive allotropic form of phosphorous
D Red phosphorous, which is used in the manufacture of safety matches, is converted into white
Correct Answer: Red phosphorous is the most reactive allotropic form of phosphorous
Pick out the correct statement?
A Reaction of NH3 with HNO3 to produce (NH4)2NO3 is endothermic
B With increase in NH3/CO2 ratio, urea yield decreases for a given temperature, pressure and
C Biuret (an intermediate during urea manufacture) is toxic to seeds and animals
D Both B. and C.
Correct Answer: With increase in NH3/CO2 ratio, urea yield decreases for a given temperature, pressure and
Pick out the wrong statement?
A All the nitrogenous fertilisers are not soluble in water
B A straight fertiliser contains only one nutrient
C Calcium cyanamide is used as weed killer in onion fields
D The phosphorous nutrient makes the plant stem stronger and increases its branches
Correct Answer: All the nitrogenous fertilisers are not soluble in water
Oxidation of ammonia is________________?
A Exothermic
B Endothermic
C Non-catalytic
D Autocatalytic
Correct Answer: Exothermic
In the manufacture of H3 PO4 (ortho); strong H2 SO4 leaching wet process as compared to electric furnace process___________________?
A Uses lower grade phosphate rock
B Requires lower capital investment in the plant
C Produces lower purity acid
D Is very costly
Correct Answer: Produces lower purity acid
Though liquid ammonia itself is a fertiliser (with 82% nitrogen content) yet it is commonly not used as such in a tropical country like India, because it___________________?
A Has a pungent smell
B Vaporises at normal temperature
C Is toxic and highly corrosive
D Is in short supply
Correct Answer: Vaporises at normal temperature
pH value of soil is maintained at ______________ by the addition of fertiliser for optimum growth and health of the plant?
A 4-5
B 7-8
C 9-10
D 12-13
Correct Answer: 7-8
Which of the following fertilisers contains the least percentage of nitrogen ?
A Liquid ammonia
B Urea
C Ammonium phosphate
D Ammonium sulphate
Correct Answer: Ammonium phosphate
Heating a mixture of phosphate rock, coke and sand in an electric furnace produces___________________?
A Phosphoric acid
B Ammonium phosphate
C Phosphorous
D Superphosphate
Correct Answer: Phosphorous
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