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IIT JEE Chemistry Of Hydrocarbons Part 2

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




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




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




4. A fuel having high octane number containing mainly




5. Propyne on reaction with aqueous chlorine gives




6. he number of litres of air needed to burn completely 8 litres of acetylene is 100 75 90 40




7. Which of the following is most acidic ?




8. Electrolysis of potassium ethanoate gives




9. .Which of the following is linear?




10. .Starting from benzene, toluene is prepared by




11. .The ozonolysis is used to locate the presence of




12. .Gas oil is the same as




13. Benzene reacts with excess of cholrine in sunlight to form Hexachlorobenzene




14. Which of the following can form metallic derivatives by replacement of H-atoms ?




15. When HCl is passed through propene in the presence of benzoyl peroxide, it gives




16. 2, 3-Dibromobutane, when heat with zinc dust, yields .




17. An example of conjugated diene is




18. .Which of the following compounds has the highest boiling point?




19. Allylic bromination of an olefin is




20. Addition of HCl to vinyl chloride gives 1, 1-dichlorocthane because of None of these.




21. Gasoline contains hydrocarbons in the rane C-7 to C-12




22. Which one of the following has the smallest heat of hydrogenation per mole? cis-2Butene




23. Propene + HBr gives




24. Which of the following is most acidic ? Methane Ethylene .




25. Which of the following derivatives of benzene would undergo nitration most readily?




26. Alkanes mainly show reactions having




27. .see-Butyl chloride on boiling with alc. KOH gives ......... as the main product.




28. .Isopropyl bromide on Wurtz reaction gives




29. The catalyst used in the manufacture of polyethene by Ziegler method is




30. Ozonolysis of p-xylene gives




31. Aqueous sulphuric acid reacts with 2-methyl-1-butene to give predominantly




32. When HBr adds to 1-butene in the presence of benzoyl peroxide, the product is




33. On chlorination, nitrobenzene gives ........ as the major product.




34. Towards electrophilic substitution the most reactive will be




35. Which of the following is least acidic ?




36. .Which of the following hydrocarbons would give a red precipitate on treatment with ammonical cuprous chloride solution ?




37. The addition of HBr to styrene gives ..... as the major product. 1-Bromo-1-phenylethane




38. Halogenation of alkanes is an example of .




39. To prepare a pure sample of n-hexane using sodium metal as one reactant, the other reactant will be




40. Sulphur monochloride reacts with .... to give mustard gas.




41. Mesitylene can be obtained by polymerization of Ethyne




42. Starting from which of the following compounds methane as well as ethane can be prepared in separate single steps ?




43. Starting from which of t efollowing compounds can methane be prepared in one step ? All of these.




44. Benzene on ozonolysis yields




45. Among the following, the compound that can be most readily sulphonated is




46. Ethyne can be prepared in a single step from




47. 1, 1-Dibromoethane when heated with zinc dust produces




48. Addition of HBr to iso-butylene mainly gives