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MCQs

Total Questions : 1113 | Page 110 of 112 pages
Question 1091. The physical state in which polymers exist is___________________?
  1.    Melts & rubber like state
  2.    Amorphous glassy state
  3.    Partially crystalline state
  4.    All A., B. and C.
 Discuss Question
Answer: Option D. -> All A., B. and C.
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1092. Cellulose acetate has very high film permeability among all the polymers of the order of 5000 gm/100 m2. Which of the following polymers has the maximum film elongation (of the order of 100%) ?
  1.    Water impermeable cellophane
  2.    Polythene
  3.    Cellulose acetate
  4.    Teflon
 Discuss Question
Answer: Option B. -> Polythene
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1093. Alkyd resin is a/an___________________?
  1.    Polyamide
  2.    Polyester
  3.    Polyolefin
  4.    Addition polymer
 Discuss Question
Answer: Option B. -> Polyester
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1094. Polycaprolactam (Nylon – 6) is produced by the condensation polymerisation of caprolactam at 240-280°C in which the conversion of caprolactam is about ______________ percent?
  1.    50
  2.    75
  3.    90
  4.    99
 Discuss Question
Answer: Option C. -> 90
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1095. Plastic tubes & pipes are generally made by ______________ moulding?
  1.    Injection
  2.    Transfer
  3.    Extrusion
  4.    Compression
 Discuss Question
Answer: Option C. -> Extrusion
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1096. Plastic articles are normally produced by _____________ moulding?
  1.    Green sand
  2.    Injection
  3.    Shell
  4.    Dry sand
 Discuss Question
Answer: Option B. -> Injection
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1097. Diphenylamine is added to rubber to_________________?
  1.    Vulcanise it
  2.    Protect it from deterioration on exposure to air
  3.    Make it non-inflammable
  4.    Make it thermosetting
 Discuss Question
Answer: Option B. -> Protect it from deterioration on exposure to air
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1098. Temperature maintained in the emulsion polymerisation reactor for PVC manufacture is about ______________ ° C?
  1.    -20
  2.    50
  3.    50
  4.    500
 Discuss Question
Answer: Option B. -> 50
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1099. Low pressure Zeigler process for the manufacture of polythene uses a catalyst which is_______________________?
  1.    Ni
  2.    V2O5
  3.    Fe
  4.    Aluminium triethyl combined with titanium tetrachloride
 Discuss Question
Answer: Option D. -> Aluminium triethyl combined with titanium tetrachloride
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1100. Which of the following is an elastomer ?
  1.    Thiokol
  2.    Phenol formaldehyde
  3.    Urea formaldehyde
  4.    Polystyrene
 Discuss Question
Answer: Option A. -> Thiokol
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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