AP EAPCET (Engineering) Polymers — practice questions
68 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice AP EAPCET (Engineering) Polymers in the app →The modern periodic law states that the physical and chemical properties of elements are periodic functions ofElements of the modern periodic table are classified into how many blocks based on the differentiating electroAcross a period from left to right, the atomic radius generally:Which element has the highest first ionization energy in period 2?Which of the following arrangements is in correct order of increasing electronegativity (Pauling scale)?The element with electronic configuration $1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^{10} 4p^3$ belongs to which group The repeating structural unit in a polymer is called:Natural rubber is a polymer of:PVC (polyvinyl chloride) is obtained from:Teflon is a polymer of:Buna-N is a copolymer of:A polymer that softens on heating and hardens on cooling reversibly is called:PMMA (Plexiglas / Lucite) is made from:According to VSEPR theory, the shape of a molecule is determined byThe hybridisation of carbon in methane (CH₄) isWhich molecule is non-polar despite having polar bonds?The bond order of the oxygen molecule O₂ (by molecular orbital theory) isA coordinate (dative) bond differs from a normal covalent bond in thatWhich species has sp hybridisation on the central atom?As bond order increases, bond lengthAn ionic bond forms byThe shape of NH₃ is pyramidal rather than planar becauseWhich has the highest dipole moment?Among the following, which is paramagnetic?Formal charge on an atom = Who proposed in 1920 that polymers are covalently bonded macromolecules?Which chemist coined the word polymer in 1833?Which of these materials is a natural polymer that has been used for centuries?Which natural polymer is the main constituent of wood and paper?The repeat unit of polyethylene is derived from which monomer?Silicones owe their name to a backbone containing which element besides oxygen?What is the process of joining many small monomer molecules into a covalently bonded chain or network called?Which pair of monomers gives the polyester PET?A polymer built from only one type of repeat unit is known as what?Ethylene-vinyl acetate has more than one variety of repeat unit. How is it classified?In a polymer chain, alternating placement of substituents on opposite sides is called what?What does an isotactic polymer have along its chain?A polymer warmed above its glass-transition temperature behaves in what way?Which of these is a first-order phase transition in polymers?Close-meshed cross-linking between polymer chains leads to which class of material?Branched and unbranched polymers are usually of which type?What does the degree of polymerisation of a chain measure?Highly branched polymers tend to have which kind of solid structure?Polystyrene is made by which kind of polymerisation, where monomers join the chain one at a time?Polyesters are typical products of which type of reaction?Most common addition polymers are made from monomers containing which feature?Which of these is an addition polymer formed from an unsaturated monomer?Saran wrap is an addition copolymer of vinyl chloride and which other monomer?Polyethylene glycol is formed by ring opening of which monomer?Why are addition polymers generally non-biodegradable?Which polymer was the first useful addition polymer, discovered by accident at ICI in 1933?Which term does IUPAC recommend in place of the deprecated addition polymerisation?Which plastic is the most commonly produced in the world?Polyethylene was first made by accident in 1898 by which German chemist?LDPE is created by which type of polymerisation?What density threshold defines HDPE?Which form of polyethylene is typically used for milk jugs and water pipes?Which synthetic polymer is third in world production after polyethylene and polypropylene?PVC is made by polymerising which monomer?About what share of PVC production uses suspension polymerisation?PVC belongs to which category of polymer?What do plasticizers do when added to PVC?Rigid PVC is commonly used in construction for which items?Which plastic was the first synthetic thermosetting plastic produced?Bakelite is made by heating phenol with which compound under a catalyst?Which property of Bakelite made it prized for electrical insulators?Polyamides arise from a carboxylic acid reacting with which kind of compound?Vulcanisation originally meant treating natural rubber with heat and which element?