This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Chemistry Part Ii > Class 12 Chemistry (Part Ii) Chapter 15 Polymers – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 15 Polymers Quiz 7 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Isaiah is conducting an experiment in his chemistry lab to create a new polymer using alkenes. He needs to choose a common initiator for the free radical polymerization process. Which of the following should he select? A) Ammonia. B) Hydrogen peroxide. C) Acetone. D) Sodium chloride. Show Answer Correct Answer: B) Hydrogen peroxide. 2. Oil fraction with the shortest molecules A) Diesel. B) Bitumen. C) Oil fuel. D) Refinery gases. Show Answer Correct Answer: D) Refinery gases. 3. In addition polymerization only one product is formed. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 4. A hydrolysis reaction A) Forms polymers. B) Breaks down polymers into monomers. C) All the above. D) None of the above. Show Answer Correct Answer: B) Breaks down polymers into monomers. 5. Terylene is also called A) Teflon. B) Dacron. C) Nylon. D) None of these. Show Answer Correct Answer: B) Dacron. 6. Starch is composed of what monomers? A) Amino acids. B) Glucose. C) Nucleic acids. D) None of the above. Show Answer Correct Answer: B) Glucose. 7. Thermosetting Plastics A) Can be reshaped using heat and pressure. B) Are lighter plastics. C) Can be recycled. D) Can not be reshaped using heat and pressure. Show Answer Correct Answer: D) Can not be reshaped using heat and pressure. 8. Under the right conditions, what can happen to the double bond in an alkene? A) It can form a quadruple bond. B) It can form a triple bond. C) It can break into a single bond. D) It can form a coordinate bond. Show Answer Correct Answer: C) It can break into a single bond. 9. Proteins are composed of what smaller subunits? A) Amino acids. B) Nucleic acids. C) Fatty acids. D) None of the above. Show Answer Correct Answer: A) Amino acids. 10. Saturated hydrocarbons have ..... bonds.Unsaturated. hydrocarbons have ..... bonds. A) Double, single. B) Single, double. C) All the above. D) None of the above. Show Answer Correct Answer: B) Single, double. 11. The characteristics of condensation polymerization are given below-I. only-C-C-linkages present in the polymer structureII. use of bifunctional or polyfunctional monomersIII. elimination of a small byproduct moleculeWhich of the following is true? A) I, II, III. B) II and III. C) I and II. D) Only III. Show Answer Correct Answer: B) II and III. 12. Which one is condensation polymer A) PAN. B) PVC. C) Polystyrene. D) Dacron. Show Answer Correct Answer: D) Dacron. 13. Which of the following polymers is known for its high tensile strength? A) Polystyrene. B) Polyvinyl chloride (PVC). C) Polyethylene. D) Nylon. Show Answer Correct Answer: D) Nylon. 14. The vulcanised rubber has A) Low water absorption, resistance to oxidation and good elasticity. B) High water absorption, resistant to oxidation and good elasticity. C) High water absorption, susceptible to oxidation and no elasticity. D) High water absorption, susceptible to oxidation and good elasticity. Show Answer Correct Answer: A) Low water absorption, resistance to oxidation and good elasticity. 15. What is a characteristic of condensation polymerization? A) Small molecules like water are eliminated. B) It requires high temperatures. C) It only occurs in natural polymers. D) No byproducts are formed. Show Answer Correct Answer: A) Small molecules like water are eliminated. 16. Which group of organic molecules speed up chemical reactions and serve as immune defense mechanisms? A) Proteins. B) Nucleic acids. C) Carbohydrates. D) Lipids. Show Answer Correct Answer: A) Proteins. 17. Current research deals with application of ..... to study of ESC phenomena A) Rupture mechanism. B) Creep failure. C) Fracture mechanism. D) None of the above. Show Answer Correct Answer: C) Fracture mechanism. 18. What is the name of the process in which a molecule called a free radical is introduced to create polymer chains? A) Polymer bonding. B) Chain reaction. C) Radical polymerisation. D) Cross linking. Show Answer Correct Answer: C) Radical polymerisation. 19. Type of reaction that breaks polymers to form monomers A) Hydrolysis. B) Condensation. C) Polymer. D) Monomer. Show Answer Correct Answer: A) Hydrolysis. 20. What type of a bond keeps polymer chains together? A) Ionic bond. B) Polar bond. C) James Bond. D) Covalent bond. Show Answer Correct Answer: D) Covalent bond. 21. Rigid and tough Polymer A) Thermoset. B) Branched. C) Linear. D) Cross-Linked. Show Answer Correct Answer: C) Linear. 22. Which of the following requires the dehydration reaction of two amino acids? A) Amino group of first amino acid binds with amino group of second amino acid. B) Carboxyl group of first amino acid binds with amino group of second amino acid. C) Carboxyl group of first amino acid binds with carboxyl group of second amino acid. D) R group of first amino acid binds with R group of second amino acid. Show Answer Correct Answer: B) Carboxyl group of first amino acid binds with amino group of second amino acid. 23. A compound made from one of more long chains of amino acids. They are an essential part of living organisms. A) Amino acids. B) Protein. C) Cells. D) Atoms. Show Answer Correct Answer: B) Protein. 24. Select the thermoforming polymer. A) Polypropylene. B) Epoxy Resin. C) Polyester Resin. D) Urea Formaldehyde. Show Answer Correct Answer: A) Polypropylene. 25. The bonding present in polyethylene is A) Covalent in the polymer chain, and covalent in the crosslinks between chains. B) Due to the dipoles present in the monomers. C) Covalent in the polymer chain, with entanglement between neighboring chains. D) Covalent throughout because a polymer is a covalent network lattice. Show Answer Correct Answer: C) Covalent in the polymer chain, with entanglement between neighboring chains. 26. Identify the copolymer A) Teflon. B) Nylon 66. C) Nylon 6. D) Polythene. Show Answer Correct Answer: B) Nylon 66. 27. A type of synthetic rubber that is a polymer of chloroprene(2-chloro-1, 3-butadiene). A) Neoprene. B) Pvc. C) Latex. D) Styrofoam. Show Answer Correct Answer: A) Neoprene. 28. A polymer is made up of ..... A) Small molecules. B) Landfill. C) Forces. D) Monomers. Show Answer Correct Answer: D) Monomers. 29. The range of temperature at which the polymer changes itself from a glassy rigid state to a soft material is called A) Glass transition temperature. B) Decomposition temperature. C) Melting point. D) Heat distortion temperature. Show Answer Correct Answer: A) Glass transition temperature. 30. Someone who studies the ways in which the atomic and molecular structure of a material relates to its overall properties. A) Material scientist. B) Biologist. C) Chemist. D) Cashier. Show Answer Correct Answer: A) Material scientist. 31. What does a dehydration synthesis reaction do? A) Adds water to put polymers together. B) Removes water to break up polymers. C) Adds water to break up polymers. D) Removes water to put polymers together. Show Answer Correct Answer: D) Removes water to put polymers together. 32. Property which makes ionic solids easy to cleave A) Brittleness. B) Ductility. C) Electrical insulators. D) Malleability. Show Answer Correct Answer: A) Brittleness. 33. The properties of Polymer is determined by A) Monomer. B) Temperature. C) Pressure. D) All of above. Show Answer Correct Answer: D) All of above. 34. Which of these is an economic disadvantage of recycling? A) Contamination of the plastics means washing is required. B) Cheaper than new plastic. C) Reduces need for crude oil. D) Energy needed for processing (sorting, shredding, transporting). Show Answer Correct Answer: D) Energy needed for processing (sorting, shredding, transporting). 35. Which of the following options shows polysaccharides A) Amylose, amylopectin, cellulose. B) Amylose, amylopectin, polyester. C) Amylose, amylopectic, teflon. D) Amylose, amylopectin. Show Answer Correct Answer: A) Amylose, amylopectin, cellulose. 36. Which of these statement about polymers is not correct? A) Polyesters are condensation polymers. B) Alkenes and halogenoalkenes can form addition polymers. C) Addition polymers are always made up of two different types of monomer. D) None of the above. Show Answer Correct Answer: C) Addition polymers are always made up of two different types of monomer. 37. Advantages of Carbon fibre are ..... A) Mass production processes can be used to bring down costs. B) Low skilled workers to create complex shapes. C) Cheap to produce complex shapes. D) Complex shapes can be created that are extremely strong and lightweight. Show Answer Correct Answer: D) Complex shapes can be created that are extremely strong and lightweight. 38. Which is an example of a crosslinked polymer A) Microwaveable food container. B) Milk Container. C) Car Tires. D) None of the above. Show Answer Correct Answer: C) Car Tires. 39. Contributes to the flexibility of the polymer A) Straight chain. B) Rigidity. C) Atoms are relatively free to rotate around the C-C backbone. D) Hexagonal arrangement. Show Answer Correct Answer: C) Atoms are relatively free to rotate around the C-C backbone. 40. These plastics have a permanent shape after curing due to the crosslinks in the polymer structure. A) Thermoplastics. B) Thermoset Plastics. C) Recyclable Plastics. D) None of the above. Show Answer Correct Answer: B) Thermoset Plastics. 41. Which of these properties do ceramics possess? A) Strong hardness. B) Flexible. C) Very fragile. D) Light. Show Answer Correct Answer: A) Strong hardness. 42. Which of the following is NOT a property of thermoplastics? A) They can be recycled. B) They can be remolded and reshaped. C) They cannot be melted. D) They are used in making bottles and containers. Show Answer Correct Answer: C) They cannot be melted. 43. What is the classification of polymer based on monomers A) Homomer, co-polymer. B) Thermosetting, thermoplastic. C) Elastomers, fibres. D) Addition, condensation. Show Answer Correct Answer: A) Homomer, co-polymer. 44. Which one is polyamide A) Terylene. B) Teflon. C) Nylon 66. D) Bakelite. Show Answer Correct Answer: C) Nylon 66. 45. What plastic is commonly used in 3D printing and made plant starch, like corn and sugarcane? A) PLA. B) Polypropylene. C) ABS. D) TPU. Show Answer Correct Answer: A) PLA. 46. Of what range Elastomers can stretch and return to their original lengths without any trouble? A) 500%-1000%. B) 80%-100%. C) 800%-1000%. D) 50%-100%. Show Answer Correct Answer: A) 500%-1000%. 47. Which one of this is Not True about Compression Molding? A) A widely used molding process for thermosetting plastics. B) Used for rubber tires and polymer matrix composite parts. C) Molding compound available in several forms:powders or pellets, liquid, or preform. D) Amount of charge must be precisely controlled to obtain repeatable consistency in the molded product. E) None of the above. Show Answer Correct Answer: E) None of the above. 48. What do we call the small molecules that make up polymers A) Monomers. B) Homopolymers. C) Ions. D) Electrons. Show Answer Correct Answer: A) Monomers. 49. What is a modern challenge in polymer innovation? A) Developing materials that harm the environment. B) Balancing human needs with environmental sustainability. C) Increasing the cost of production. D) Creating polymers that are non-functional. Show Answer Correct Answer: B) Balancing human needs with environmental sustainability. 50. Polymers are derived from what raw materials? A) Natural gas. B) Wood pulp. C) Crude oil. D) Metallic oxides. Show Answer Correct Answer: C) Crude oil. 51. Why cannot heavy structure be made by polymer? A) The structural rigidity is very less. B) The structural rigidity is very strong. C) The structural rigidity is common. D) All are wrong. Show Answer Correct Answer: A) The structural rigidity is very less. 52. Which compound can polymerise by reaction with itself? A) HOOCCH$_{2}$COOH. B) NH$_{2}$CH$_{2}$COCl. C) CH$_{3}$CH$_{2}$CONH$_{2}$. D) NH$_{2}$CH$_{2}$CH$_{2}$NH$_{2}$. Show Answer Correct Answer: B) NH$_{2}$CH$_{2}$COCl. 53. How should the bonds of the repeating unit be drawn in the equation? A) Facing up and down. B) Facing left and right. C) Facing out at angles. D) Facing towards the center. Show Answer Correct Answer: B) Facing left and right. 54. A composite material is made of A) A single material. B) Two or more separate materials. C) Two or more chemically combined materials. D) None of these. Show Answer Correct Answer: B) Two or more separate materials. 55. Simple molecules that occur naturally in plant and animal tissues and that are basic building blocks of proteins. A) Cellulose. B) Carbohydrates. C) DNA. D) Amino acids. Show Answer Correct Answer: D) Amino acids. 56. Type of polymers made in a laboratory A) Synthetic. B) Inorganic. C) Monomer. D) Organic. Show Answer Correct Answer: A) Synthetic. 57. Which monomer makes up RNA? A) Fatty acid and glycerol. B) Glucose. C) Nucleotides. D) Amino acids. Show Answer Correct Answer: C) Nucleotides. 58. The reactions in which polymers are created are called ..... reactions. A) Combustion. B) Hydration. C) Addition of halogens. D) Polymerization. Show Answer Correct Answer: D) Polymerization. 59. Which of the following are the properties of LDPE A) Low density, highly branched, high pressure and catalyst used. B) High density, stronger, less flexible, small amount of branching, mild pressure and catalyst used. C) High density, highly branched, high melting point. D) Low density, low branching, low melting point. Show Answer Correct Answer: A) Low density, highly branched, high pressure and catalyst used. 60. Which compound can form a polymer without needing another reagent? A) HOCH$_{2}$CH$_{2}$COCl. B) HOOCCH$_{2}$CH$_{2}$COOH. C) ClCH$_{2}$CH$_{2}$COOH. D) HOCH$_{2}$CH$_{2}$OH. Show Answer Correct Answer: A) HOCH$_{2}$CH$_{2}$COCl. ← PreviousNext →Related QuizzesScience QuizzesClass 12 QuizzesClass 12 Chemistry (Part Ii) Chapter 15 Polymers Quiz 1Class 12 Chemistry (Part Ii) Chapter 15 Polymers Quiz 2Class 12 Chemistry (Part Ii) Chapter 15 Polymers Quiz 3Class 12 Chemistry (Part Ii) Chapter 15 Polymers Quiz 4Class 12 Chemistry (Part Ii) Chapter 15 Polymers Quiz 5Class 12 Chemistry (Part Ii) Chapter 15 Polymers Quiz 6Class 12 Chemistry (Part Ii) Chapter 15 Polymers Quiz 8Class 12 Chemistry (Part Ii) Chapter 15 Polymers Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books