MCQOPTIONS
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MCQOPTIONS
This section includes 607 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Polycaprolactum (Nylon - 6) is produced by the condensation polymerisation of caprolactum at 240-280°C in which the conversion of caprolactum is about __________ percent. |
| A. | 50 |
| B. | 75 |
| C. | 90 |
| D. | 99 |
| Answer» D. 99 | |
| 2. |
Softening point of high density polythene is about __________ °C. |
| A. | 85 |
| B. | 135 |
| C. | 165 |
| D. | 205 |
| Answer» C. 165 | |
| 3. |
as compared to has lower |
| A. | abrasion resistance. |
| B. | thermal stability. |
| C. | adhesion to rubber. |
| D. | hardness. |
| Answer» B. thermal stability. | |
| 4. |
Epoxy resin is a polymer containing two or more groups called epoxide group or ethoxyline group. It is a |
| A. | polyamide & an elastomer. |
| B. | good adhesive. |
| C. | surface coating agent. |
| D. | both (b) and (c). |
| Answer» E. | |
| 5. |
Cellulose acetate has very high film permeability among all the polymers of the order of 5000 gm/100 m. Which of the following polymers has the maximum film elongation (of the order of 100%) ? |
| A. | Water impermeable cellophane |
| B. | Polythene |
| C. | Cellulose acetate |
| D. | Teflon |
| Answer» C. Cellulose acetate | |
| 6. |
β - glucose is the monomer of |
| A. | cellulose |
| B. | starch |
| C. | protein |
| D. | none of these |
| Answer» B. starch | |
| 7. |
Polymerisation product of CF (carbon tetraflouride) is called P.T.F.E. (poly chloro tetra flouro ethylene). It is also called |
| A. | polyurethane |
| B. | silicone rubber |
| C. | teflon |
| D. | epoxy resin |
| Answer» D. epoxy resin | |
| 8. |
Zeigler - Natta catalyst (AlR - AlCl) is used in the polymerisation of |
| A. | vinyl acetate |
| B. | vinyl chloride |
| C. | propylene |
| D. | styrene |
| Answer» D. styrene | |
| 9. |
Which of the following low molecular weight (<10 ), soft & waxy polymer is used in ? |
| A. | Cellulose acetate |
| B. | Polyvinyl acetate |
| C. | Thiokol |
| D. | PVC |
| Answer» C. Thiokol | |
| 10. |
90% of the caprolactum is converted to nylon-6 on its condensation polymerisation in the reactor maintained at a temperature of __________ °C. |
| A. | -5 |
| B. | 10-30 |
| C. | 250-280 |
| D. | 500-600 |
| Answer» D. 500-600 | |
| 11. |
Molecular weight of a polymer is equal to the molecular weight of the repeat unit multiplied by the degree of polymerisation. What is the molecular weight of poly vinyl chloride (PVC), if its degree of polymerisation is 800? |
| A. | 0000 |
| B. | 1600 |
| C. | 9200 |
| D. | 0800 |
| Answer» B. 1600 | |
| 12. |
In a co-polymer, the repeating units contain two different monomers. Which of the following is a copolymer? |
| A. | TFE |
| B. | una-S |
| C. | MMA |
| D. | olycaprolactum |
| Answer» C. MMA | |
| 13. |
In a cross linked polymer, the monomeric units are linked together to constitute a three dimensional network. Which of the following is a cross-linked polymer? |
| A. | akelite (phenol formaldehyde) |
| B. | olyester |
| C. | olythene |
| D. | ylon-6 |
| Answer» B. olyester | |
| 14. |
Which of the following polymers are produced by employing all bulk polymerisation, solution polymerisation & suspension polymerisation technique of addition (chain) polymerisation? |
| A. | VC |
| B. | akelite |
| C. | TFE |
| D. | poxy resin |
| Answer» B. akelite | |
| 15. |
Which of the following is the most important rubber compounding ingradient which is used to improve wearing qualities of both natural rubber & SBR by imparting toughness? |
| A. | hosphorous |
| B. | arbon black |
| C. | ine oil |
| D. | osin |
| Answer» C. ine oil | |
| 16. |
Condensation polymerisation of caprolac-tum is carried out in the reactor maintained at a temperature of __________ °C for producing nylon-6. |
| A. | -20 to 25 |
| B. | 50 to 75 |
| C. | 100 to 150 |
| D. | 250-280 |
| Answer» E. | |
| 17. |
β - glucose is the monomer of |
| A. | Cellulose |
| B. | Starch |
| C. | Protein |
| D. | None of these |
| Answer» B. Starch | |
| 18. |
Softening point of high density polythene is about __________ °C. |
| A. | 85 |
| B. | 135 |
| C. | 165 |
| D. | 205 |
| Answer» C. 165 | |
| 19. |
Which of the following is an inorganic polymer? |
| A. | Teflon |
| B. | Perspex |
| C. | Silicones |
| D. | Bakelite |
| Answer» D. Bakelite | |
| 20. |
Nylon 6 as compared to nylon 6, 6 has lower |
| A. | Abrasion resistance |
| B. | Thermal stability |
| C. | Adhesion to rubber |
| D. | Hardness |
| Answer» B. Thermal stability | |
| 21. |
Which of the following polymers is used for making a non stick coating on frying pans? |
| A. | Bakelite |
| B. | Teflon |
| C. | Perspex |
| D. | PVC |
| Answer» C. Perspex | |
| 22. |
Which of the following is not a condensation polymer? |
| A. | Bakelite |
| B. | Melamine polymer |
| C. | Polymethylmethacrylate (PMMA) |
| D. | None of these |
| Answer» D. None of these | |
| 23. |
Zeigler - Natta catalyst (AlR₃ - AlCl₃) is used in the polymerisation of |
| A. | Vinyl acetate |
| B. | Vinyl chloride |
| C. | Propylene |
| D. | Styrene |
| Answer» D. Styrene | |
| 24. |
Which of the following is not a polymer of two monomers? |
| A. | Teflon |
| B. | Bakelite |
| C. | SBR |
| D. | None of these |
| Answer» B. Bakelite | |
| 25. |
Which of the following types of polymers has the strongest inter particle forces? |
| A. | Elastomers |
| B. | Fibres |
| C. | Thermoplastics |
| D. | Thermosetting polymers |
| Answer» E. | |
| 26. |
Most of the plastics are safe to be used upto a maximum temperature of __________ °C. |
| A. | 100 |
| B. | 150 |
| C. | 350 |
| D. | 450 |
| Answer» C. 350 | |
| 27. |
90% of the caprolactum is converted to nylon-6 on its condensation polymerisation in the reactor maintained at a temperature of __________ °C. |
| A. | -5 |
| B. | 10-30 |
| C. | 250-280 |
| D. | 500-600 |
| Answer» D. 500-600 | |
| 28. |
Which of the following is not a polyolefin? |
| A. | Polystyrene |
| B. | Polypropylene |
| C. | Neoprene |
| D. | None of these |
| Answer» D. None of these | |
| 29. |
Polymerisation product of C₂F₄ (carbon tetraflouride) is called P.T.F.E. (poly chloro tetra flouro ethylene). It is also called |
| A. | Polyurethane |
| B. | Silicone rubber |
| C. | Teflon |
| D. | Epoxy resin |
| Answer» D. Epoxy resin | |
| 30. |
Which of the following is generally not drawn into fibre? |
| A. | Polyamide |
| B. | Unsaturated polyesters |
| C. | Saturated polyesters |
| D. | Polyacrylonitrile |
| Answer» C. Saturated polyesters | |
| 31. |
Branched chair polymers as compared to linear polymers have |
| A. | Higher melting point |
| B. | Higher tensile strength |
| C. | Lower density |
| D. | None of these |
| Answer» D. None of these | |
| 32. |
Polycaprolactum (Nylon - 6) is produced by the condensation polymerisation of caprolactum at 240-280°C in which the conversion of caprolactum is about __________ percent. |
| A. | 50 |
| B. | 75 |
| C. | 90 |
| D. | 99 |
| Answer» D. 99 | |
| 33. |
Which of the following low molecular weight (<10⁴ ), soft & waxy polymer is used in chewing gum? |
| A. | Cellulose acetate |
| B. | Polyvinyl acetate |
| C. | Thiokol |
| D. | PVC |
| Answer» C. Thiokol | |
| 34. |
Which of the following is a polymer of hexamethylene diamine and adipic acid? |
| A. | Nylon-6 |
| B. | Nylon-66 |
| C. | Nylon-6, 10 |
| D. | Epoxy resin |
| Answer» C. Nylon-6, 10 | |
| 35. |
Which of the following is stretched into fibres? |
| A. | Saturated polyester |
| B. | Unsaturated polyester |
| C. | Isoprene |
| D. | Bakelite |
| Answer» B. Unsaturated polyester | |
| 36. |
Which of the following is not a natural polymer? |
| A. | Nucleic acids e.g. RNA and DNA |
| B. | Polysaccharides |
| C. | Polyisoprene |
| D. | Polyurethane |
| Answer» E. | |
| 37. |
Which of the following is an elastomer? |
| A. | Thiokol |
| B. | Phenol formaldehyde |
| C. | Urea formaldehyde |
| D. | Polystyrene |
| Answer» B. Phenol formaldehyde | |
| 38. |
Which of the following rubbers has the widest service temperature range (-75 to 275°C) ? |
| A. | Butyl rubber |
| B. | Silicon rubber |
| C. | Nitrile rubber |
| D. | Silicone rubber |
| Answer» E. | |
| 39. |
Acrylonitrile is mainly used in the __________ industry. |
| A. | Polymer |
| B. | Printing |
| C. | Dyeing |
| D. | Photographic |
| Answer» B. Printing | |
| 40. |
Which of the following has the weakest intermolecular forces? |
| A. | Polyisoprene |
| B. | Nylon-66 |
| C. | Polystyrene |
| D. | Bakelite |
| Answer» B. Nylon-66 | |
| 41. |
Temperature maintained in the emulsion polymerisation reactor for PVC manufacture is about __________ ° C. |
| A. | -20 |
| B. | 50 |
| C. | 250 |
| D. | 500 |
| Answer» C. 250 | |
| 42. |
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%) ? |
| A. | Water impermeable cellophane |
| B. | Polythene |
| C. | Cellulose acetate |
| D. | Teflon |
| Answer» C. Cellulose acetate | |
| 43. |
Which of the following is the lowest cost plastic commercially available? |
| A. | Polythene |
| B. | Teflon |
| C. | Bakelite |
| D. | PVC |
| Answer» B. Teflon | |
| 44. |
β - glucose is the monomer of%! |
| A. | Cellulose |
| B. | Starch |
| C. | Protein |
| D. | None of these |
| Answer» B. Starch | |
| 45. |
Zeigler process%! |
| A. | Produces high density polythene |
| B. | Uses no catalyst |
| C. | Produces low density polythene |
| D. | Employs very high pressure |
| Answer» B. Uses no catalyst | |
| 46. |
Softening point of high density polythene is about __________ °C.%! |
| A. | 85 |
| B. | 135 |
| C. | 165 |
| D. | 205 |
| Answer» C. 165 | |
| 47. |
Elastomers are%! |
| A. | Thermosetting material |
| B. | Exemplified by protein derivatives |
| C. | Having high flexural strength |
| D. | Having very high tensile strength and heat resistance |
| Answer» D. Having very high tensile strength and heat resistance | |
| 48. |
Molecular weights of plastics ranges from%! |
| A. | 1000 to 5000 |
| B. | 5000 to 1000 |
| C. | 20000 to 25000 |
| Answer» D. | |
| 49. |
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 |
| Answer» D. The absence of chlorine atoms in its monomer | |
| 50. |
Acrylonitrile is mainly used in the __________ industry.%! |
| A. | Polymer |
| B. | Printing |
| C. | Dyeing |
| D. | Photographic |
| Answer» B. Printing | |