Kerala PSC Previous Years Question Paper & Answer
Page:15
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Lecturer in Polymer Technology (Polytechnics)' And exam conducted in the year 2023. And Question paper code was '120/2023/OL'. Medium of question paper was in Malayalam or English . Booklet Alphacode was ''. Answer keys are given at the bottom, but we suggest you to try answering the questions yourself and compare the key along wih to check your performance. Because we would like you to do and practice by yourself.
A:-Castor oil
B:-PEG
C:-Glycerol
D:-Soybean Polyol
Correct Answer:- Option-A
Question81:-Which of the following is amino plastic?
A:-PRFE
B:-PC
C:-UF
D:-PF
Correct Answer:- Option-C
Question82:-PPO can be used in steam autoclave because of its
A:-High hydrolytic stability
B:-Goof flame extinguishing character
C:-Less thermal expansion
D:-None of these
Correct Answer:- Option-A
Question83:-A major disadvantage of mill mixing as compared to internal mixer is
A:-It is time consuming and depends upon the skill of the operator
B:-It is difficult to prevent rapid rise of stock temperature
C:-It provides no shearing action
D:-None of the above
Correct Answer:- Option-A
Question84:-From the point of view of ingredients, the following physical changes
occur during a mixing cycle
A:-Entering, Contacting, flowing and dumping
B:-Incorporation, dispersion, distribution and plasticization
C:-Contacting, squeezing and moving
D:-None of the above
Correct Answer:- Option-B
Question85:-Increase in the rotor speed of an internal mixer will result in
A:-Increase in the temperature of cooling water
B:-Decrease in stock temperature
C:-Increase in the stock viscosity
D:-Decrease in the shear rate
Correct Answer:- Option-A