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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

Neoprene is rendered non-inflammable, because of_____________________?
A Its cross-linked structure
B Its linear chain structure
C The presence of chlorine atoms in its monomer
D The absence of chlorine atoms in its monomer
Correct Answer: The presence of chlorine atoms in its monomer
Thermosetting polymers as compared to thermoplastic polymers_____________________?
A Are formed by addition polymerisation
B Have three dimensional structure
C Have linear structure
D None of these
Correct Answer: Have three dimensional structure
Alkyd resin e.g., glyptal resin formed by Phthalic anhydride and glycerine is not used_______________?
A For surface coating of automobiles & air crafts
B For fibre making
C As plasticiser for PVC & nitrocellulose
D For film forming materials
Correct Answer: For fibre making
Orion is_________________?
A A copolymer
B A condensation polymer
C Obtained by polymerising vinyl cyanide
D All A., B. and C.
Correct Answer: Obtained by polymerising vinyl cyanide
Temperature and gage pressure maintained during the manufacture of cold SBR (styrene butadiene rubber) are__________________?
A 5°C and 1 kgf/cm2
B – 20°C and 1 kgf/cm2
C 0°C and 1 kgf/cm2
D 0°C and 3 kgf/cm2
Correct Answer: 5°C and 1 kgf/cm2
Which of the following is the most important rubber compounding ingredient which is used to improve wearing qualities of both natural rubber & SBR by imparting toughness ?
A Phosphorous
B Carbon black
C Pine oil
D Rosin
Correct Answer: Carbon black
Vulcanisation of rubber decreases its__________________?
A Tensile strength
B Resistance to organic solvents
C Tackiness
D Working temperature range
Correct Answer: Tackiness
Viscosity of a polymer solution or melt _________________?
A Decreases with increase in molecular weight
B Decreases with increase in temperature
C Increases with increase in temperature
D Does not vary with temperature rise
Correct Answer: Increases with increase in temperature
The rate controlling step in the manufacture of silicone rubber is the_________________?
A Polymer termination step
B Condensation of siloxane to silicone
C Initial hydrolysis of silicone monomer
D None of these
Correct Answer: Initial hydrolysis of silicone monomer
Phosphates (e.g., tricresyl, tributyl, tetrabutyl, triphenyl etc.) are added to polymers to act as __________________?
A Hardeners
B Anti-shrinkage agents
C Plasticisers
D Transparency improver
Correct Answer: Plasticisers
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