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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

______________are produced by reacting polybasic acid (e.g. Phthalic anhydride) with polyhydric alcohol (e.g., glycerol) ?
A Unsaturated polyester
B Alkyd resins
C Saturated polyester
D Amino resins
Correct Answer: Alkyd resins
Addition of stabiliser during PVC manufacture is done to________________?
A Improve its impact strength
B Improve its elasticity
C Reduce the melt viscosity & glass transition temperature
D Prevent its thermal degradation
Correct Answer: Prevent its thermal degradation
Amino resins are used in paper treatment to improve its__________________?
A Wet tear and bursting strength
B Folding endurance
C Wet rub resistance
D All A., B. & C.
Correct Answer: All A., B. & C.
Addition polymerisation is not involved in the manufacture of_______________?
A Low density polythene
B Poly vinyl chloride
C Polystyrene
D Polyhexamethylene adipamide
Correct Answer: Polyhexamethylene adipamide
Which of the following is not a thermoplastic material ?
A Epoxy polymer
B PVC
C Polystyrene
D Polythene
Correct Answer: Epoxy polymer
Nylon-6 as compared to nylon 66 has lower ?
A Abrasion resistance
B Thermal stability
C Adhesion to rubber
D Hardness
Correct Answer: Abrasion resistance
Identify the group in which all the polymers mentioned can be used to make fibres ?
A Butadiene copolymers, Polyamides, Urea-formaldehyde
B Cellulose derivatives, Polyisoprene, Polyethylene
C Cellulose derivatives, Polyamides, Polyurethane
D Polypropylene, Poly vinyl chloride, Silicon
Correct Answer: Cellulose derivatives, Polyisoprene, Polyethylene
Nylon-6 is manufactured from _______________?
A Caprolactam
B Adipic acid and Hexamethylenediamine
C Maleic anhydride and Hexamethylenediamine
D Sebacic acid and Hexamethylenediamine
Correct Answer: Caprolactam
Epoxy resins (i.e., epoxide polymers) ?
A Are made by addition polymerisation reaction only
B Contain an epoxy group (fig bellow) at the ends of the polymer
C Are cross-linked polymers only
D Use emulsion polymerisation methods
Correct Answer: Contain an epoxy group (fig bellow) at the ends of the polymer
Which of the following polymers belong to the class of formaldehyde resin ?
A Melamine resins
B Teflon
C Dacron
D None of these
Correct Answer: Melamine resins
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