Start practice on polymer 1. Which of the following is not a natural polymer Cellulose Protein PVC Nucleic acid ans :c 2. Which of the following is not correct regarding terylene Step-growth polymer Synthetic fiber Thermosetting plastic It is also called Dacron ans :c 3. Which is not a polymer? Sucrose Enzyme Starch Teflon ans :a 4. Which one of the following in used to make "non-stick”cookware PVC Polystyrene Polyethylene terephthalate Polytetrafluoroethylene ans :d 5. The polymer used for making contact lenses for eyes is Poly methyl methacrylate Polyethylene Polyethylacrylate Nylon 6 ans :a 6. Characteristic property of Teflon is 2000 poise viscosity High surface tension Non-inflammable and resistant to heat Highly reactive ans :c 7. Which of the following is not a polymer ? Silk DNA DDT Starch an
Start practice on Isomerism 1. Structural Isomerism 1. The total number of possible isomeric trimethylbenzene is. 4 6 2 3 ans : d 2. C7H9N has how many isomeric forms that contain a benzene ring. 7 5 6 4 ans : b 3. C6H5CN and C6H5NC exhibt which type of isomerism Functional Dextro isomerism Position Metamerism ans : a 4. Find the pair of chain isomer CH3CHBr2 and CH2BrCH2Br 1-propanl and 2-propanol Neo-pentane and isopentane Diethyl ether and methyl-n-propyl ether ans : c 5. Functional isomerism is exhibited by the following pair of compounds Acetone, propionaldehyde Diethyl ether, methyl propyl ether Butane, isobutane 1-butene, 2-butene ans : a 6.The isomerism exhibited by alkyl cyanide and alkylisocyanide is Functional position Tautomerism Metamerism ans : a 7. n-propyl alcohol and isopropyl alcohol are examples of posit