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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

Threshold limit value (TLV) of CO in air is _____________ ppm?
A 5
B 50
C 2000
D 5000
Correct Answer: 5
There are five concentric layers within the atmosphere which is differentiated on the basis of temperature. The atmospheric layer which lies close to the earth’s surface in which human being along with other organisms live is called troposphere. The rate at which air temperature in the troposphere gradually decreases with height is about _____________ °C/km?
A 0.05
B 1
C 6.5
D 15
Correct Answer: 6.5
Which of the following is the most widely used disinfectant in water treatment ?
A Chlorine
B Irradiation of water by ultraviolet light
C Cation exchanger
D Coagulation
Correct Answer: Chlorine
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
Which of the following is not a natural source of air pollution ?
A Volcanic eruptions and lightening discharges
B Biological decay of vegetable matter
C Photochemical oxidation of organic matter
D None of these
Correct Answer: None of these
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
Removal of ______________ results from the disinfection of water?
A Turbidity
B Odour
C Hardness
D Bacteria
Correct Answer: Bacteria
A standard test for determination of hardness in water is termed as ______________ test?
A EDTA
B Electometric
C Total count
D Presumptive
Correct Answer: EDTA
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