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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

Cross linked polymers formed from bi-and trifunctional groups in which cross-linkage in three dimensions via few chemical bonding across linear chains occur imparts to the polymer ______________ properties?
A Thermoplastic
B Thermosetting
C Elastometric
D Brittleness
Correct Answer: Elastometric
Low pressure Zeigler process of polythene manufacture____________________?
A Employs a pressure of 30 kgf/cm2
B Achieves an yield of 95-98% based on ethylene
C Produces very low density polythene
D Does not use any catalyst for polymerisation
Correct Answer: Achieves an yield of 95-98% based on ethylene
_______________ practically possess no elasticity?
A Vulcanite or ebonite
B Spandex fibre
C Polysulphide rubber
D Epoxy resin
Correct Answer: Vulcanite or ebonite
Buna-S is a _______________ material?
A Fibrous
B Plastic
C Resinous
D Rubbery
Correct Answer: Rubbery
Which of the following natural bio polymers are formed as a result of polymerisation of amino-acids ?
A Starch
B Cellulose
C Proteins
D Nucleic acids
Correct Answer: Proteins
______________ resins are produced by the condensation polymerisation of formaldehyde with urea or melamine?
A Epoxy
B Amino
C Alkyd
D Phenolic
Correct Answer: Amino
Condensation polymerisation of _____________ produces Bakelite?
A Propylene
B Phenol & formaldehyde
C Phenol & acetaldehyde
D Urea & formaldehyde
Correct Answer: Phenol & formaldehyde
Polystyrene is a ____________ plastic at room temperature?
A Ductile
B Brittle
C Malleable
D None of these
Correct Answer: Brittle
Pick out the wrong statement ?
A For the manufacture of styrene, the major raw materials are benzene and ethylene
B One important copolymer of styrene is SBR, which is widely used in the manufacture of
C Manufacture of phenol by chloroben-zene-eaustic process involves. The chlorination of benzene, causticisation and hydrolysis
D Phenol manufacture by chlorobenzene-caustic process is competitive even when low cost chlorine is not available
Correct Answer: Phenol manufacture by chlorobenzene-caustic process is competitive even when low cost chlorine is not available
Pick out the wrong statement regarding the solubility characteristics of high polymers?
A Greater the degree of cross-linking in the polymer, lesser is its solubility
B Polymers having more aliphatic character are more soluble in aliphatic solvents, while those polymers having more aromatic character are more soluble in aromatic solvents
C Swelling tendency or solubility of polymers in a particular solvent decreases with increase in molecular weight of the solvent
D High molecular weight polymers on dissolving gives solution of very low viscosity
Correct Answer: High molecular weight polymers on dissolving gives solution of very low viscosity
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