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IIT JEE Chemistry Of Hydrocarbons Part 1

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1. Olafins means




2. Which of the following has dipole moment?




3. In which of the following C-H bond will be smallest?




4. Alkynes when reduced with sodium in liquid ammonia gives




5. 12-butyne when reduced with palladised charcoal with poisons like quinoline gives




6. Vapours of ethyl alcohol when passed over phosphoric acid at 220 degreeCentigrade gives




7. Which of the following have maximum boiling point?




8. The reactivity of a hydrogen in an alkane depends on carbon atoms




9. The addition reaction of carbon-carbon double bonds are free radical addition None of the above




10. With the increase in branching the boiling point




11. Which of the following has minimum boiling point? isopentane both A and B




12. Which of the following will show maximum possible isomers?




13. Propane when treated with conc. Nitric acid at 723 K gives




14. Vapours of n-hexane when passed over special catalysts under high pressure and temperature given benzene This process is called




15. Which of the following can form metallic derivatives by the replacement of hydrogen atoms? Ethylene




16. Alkenes are isomeric with




17. The higher fraction of crude oil burn with pinkish flame




18. Which of the following alkanes will undergo oxidation readily?




19. A mixture of 1-chloropropane and 2-chloropropane is treated with alcoholic KOH. The resulting mixture will have




20. On ozonolysis and subsequent hydrolysis an alkene gave 2 molecules of formaldehyde and hydrogen peroxide. The alkene is




21. Wurtz reaction cannot be used for the preparation of




22. Ethylene when treated with bromine water gives




23. Bromination of isobutene gives as major product




24. Among the alkanes with an increase in mol wt??.




25. Alkyl halides gives alkenes when treated with




26. Tetraethyl lead is used as




27. isomers of butyl chloride which will undergo dehydrogenation more readily




28. The least substituted alkene is the major product in accordance with




29. Alcohholic solution of caustic potash is a specific reagent for




30. An example of conjugate diene is




31. Octane number of iso-octane is




32. In ethane each carbon atom is bonded to




33. When two alkenes may be formed by dehydrohalogenation of an alkyl halide the alkene which is more substituted is the major or preferred product. This generalisation is known as .




34. To increase the yield of gasoline from a given sample of crude oil the chemist carries out




35. Polythene is a polymer of




36. Dehydrohalogenation of alkyl dihalides gives




37. The formation of PVC from vinyl chloride is an example of




38. Cetane is




39. Iodoform can be prepared in the laboratory by the action of iodine on sodium hydroxide in the presence of




40. Crude oil is a complex mixture of




41. The number of isomeric pentanes is




42. During distillation of coal tar naphthalene is a constituent of




43. Alcoholic solution of caustic potash is a specific reagent for




44. Aromatisation is the conversion of




45. Sodium propionate on decarboxylation with soda-lime gives




46. Acetylene can be converted into methyl vinyl ether on reaction with




47. A mixture of sodium butanoate and 2-methyl sodium propanoate is heated with sodalime. The resulting compound will be




48. The minimum temp. at which oil gives sufficient vapours to form an explosive mixture with air is known as