Title 10.HALOALKANES AND HALOARENES.pdf ✅

User Restrictions: Not authorized to transfer to any third party, Not authorized to go for any resale of this document without permission. Document is protected from being unauthorized use, for any help please contact Mr. SEKHAR , +919206306398. We are not responsible for lose of data while deprotecting the document without any permission from author. Use only for question paper preparation, worksheet preparation... 10.HALOALKANES AND HALOARENES Single Correct Answer Type 1. Tertiary alkyl halides are practically inert to substitution by SN2 mechanism because of a) Steric hindrance b) Inductive effect c) Instability d) Insolubility 2. Reaction of t-butyl bromide with sodium methoxide produces a) Isobutane b) Isobutylene c) Sodium t-butoxide d) t-butylmethyl ether 3. Which of the following will not give iodoform test? a) Isopropyl alcohol b) Ethanol c) Ethanal d) Benzyl alcohol 4. In the reaction sequence, C2H5Cl + KCN C2H5OH → X H3O⨁ → △ Y What is the molecular formula of Y? a) C3H6O2 b) C3H5N c) C2H4O2 d) C2H6O 5. The structure of the major product formed in the following reaction is a) b) c) d) 6. In the chemical reactions, The compounds ‘A’ and ‘B’ respectively are a) Nitrobenzene and fluorobenzene b) Phenol and benzene c) Benzene diazonium chloride and fluorobenzened) Nitrobenzene and chlorobenzene 7. Which one of the following chlorohydrocarbons readily undergoes solvolysis? a) CH2 = CHCl b)
User Restrictions: Not authorized to transfer to any third party, Not authorized to go for any resale of this document without permission. Document is protected from being unauthorized use, for any help please contact Mr. SEKHAR , +919206306398. We are not responsible for lose of data while deprotecting the document without any permission from author. Use only for question paper preparation, worksheet preparation... c) d) 8. Chlorination of toluene in presence of light and heat followed by treatment with aqueous NaOH gives a) o-cresol b) p-cresol c) mixture of o-cresol and p-cresol d) 1, 3, 5-trihydroxy toluene 9. The reaction of toluene with Cl2 in presence of FeCl3 gives predominantly a) Benzoyl chloride b) Benzyl chloride c) o-and p-chlorotoluene d) m-chlorotoluene 10. Chlorobenzene gives aniline with a) NH3/Cu20 b) NH3/H2SO4 c) NaNH2 d) None of the above 11. Which one of the isomers of cyclohexane hexachloride is strong pesticide? a) α b) β c) γ d) δ 12. Ethyl ortho formate is formed by heating ............ with sodium ethoxide. a) CHCl3 b) C2H5OH c) HCOOH d) CH3CHO 13. Best method of preparing alkyl chloride is a) ROH + SOCl2 ⟶ b) ROH + PCl5 ⟶ c) ROH + PCl3 ⟶ d) ROH + HCl Anhy.ZnCl2 → 14. Which of the following will not respond to iodoform test? a) Ethyl alcohol b) Propanol-2 c) Propanol-1 d) Ethanal 15. Maximum number of molecules of CH3I that can react with a molecule of CH3NH2 are a) 3 b) 4 c) 2 d) 1 16. Which of the compounds when brominated turns to meso 2, 3-dibromobutane? a) Cis-2-butene b) Iso-butane c) Butane d) Trans-2-butene 17. Which of the following statements about benzyl chloride is incorrect? a) It is less reactive than alkyl halides b) It can be oxidised to benzaldehyde by boiling with copper nitrate solution c) It is a lachrymatory liquid and answers Beilstein’s test d) It gives a white precipitate with alcoholic silver nitrate 18. The reaction in which phenol differs from alcohol is a) It undergoes esterification with carboxylic acid b) It reacts with ammonia c) It forms yellow crystals of iodoform d) It liberates H2 with Na metal 19. In the reaction, 2A + dry oxide ∆ → ether + 2AgX A is a/an a) Primary alcohol b) Acid c) Alkyl halide d) Alcohol 20. The alkyl halides that can be made by free radical halogenation of alkanes are a) RCl and RBr but not RF or RI b) RF, RCl and RBr but not RI c) RF, RCl, RBr, RI d) RF, RCI and RI but not RBr
User Restrictions: Not authorized to transfer to any third party, Not authorized to go for any resale of this document without permission. Document is protected from being unauthorized use, for any help please contact Mr. SEKHAR , +919206306398. We are not responsible for lose of data while deprotecting the document without any permission from author. Use only for question paper preparation, worksheet preparation... 21. X compound reacts with Na to give CH3 CH2 CH2 CH3 , then compound X is a) CH3 CH2OH b) CH3 CH2 − Cl c) CH3 − CH3 d) CH3CH2CH2CH2 OH 22. p-nitrobromobenzene can be converted to p-nitroaniline by using NaNH2. The reaction proceeds through the intermediate named a) Carbocation b) Carbanion c) Benzyne d) Dianion 23. Elimination of bromine from 2-bromobutane results in the formation of a) Predominantly 2-butyne b) Predominantly 1-butene c) Predominantly 2-butene d) Equimolar mixture of 1 and 2-butene 24. What happens if CCl4 is treated with AgNO3? a) A white ppt. of AgCl will form b) NO2 will be evolved c) CCl4 will dissolve in AgNO3 d) Nothing will happen 25. The organic chloro compound, which shows complete stereochemical inversion during an SN2 reaction is a) (C2H5 )2 CHCl b) (CH3 )3CCl c) (CH3 )2 CHCl d) CH3Cl 26. Identify X and Y in the following sequence C2H5Br X → product Y → C3H7NH2 a) X = KCN, Y = LiAlH4 b) X = KCN, Y = H3O + c) X = CH3 Cl, Y = AlCl3/HCl d) X = CH3 NH2, Y = HNO2 27. 1-chlorobutane on reaction with alcoholic potash gives a) but-1-ene b) butan-1-ol c) but-2-ene d) butan-2-ol 28. Which of the following applies in the reaction, CH3CHBrCH2CH3 Alc.KOH → (i)CH3CH = CHCH3 (major product) (ii) CH2 = CHCH2CH3 (minor product) a) Markownikoff’s rule b) Saytzeff’s rule c) Kharasch effect d) Hofmann’s rule 29. CH3Br + KCN(alc. ) → X Reduction → Na+C2H5OH Y What is Y in the series? a) CH3CN b) C2H5CN c) C2H5NH2 d) CH3NH2 30. Which of the following does not answer iodoform test? a) n-butyl alcohol b) Acetophenone c) Acetaldehyde d) Ethylmethyl ketone 31. Number of monochloro derivatives obtained when neo −pentane is chlorinated, is a) One b) Two c) Three d) Four 32. Which one of the following does not give iodoform? a) b) CH3OH
User Restrictions: Not authorized to transfer to any third party, Not authorized to go for any resale of this document without permission. Document is protected from being unauthorized use, for any help please contact Mr. SEKHAR , +919206306398. We are not responsible for lose of data while deprotecting the document without any permission from author. Use only for question paper preparation, worksheet preparation... c) CH3 CH2OH d) 33. t-butyl chloride preferably undergo hydrolysis by a) SN1 mechanism b) SN2 mechanism c) Any of (a) and (b) d) None of the above 34. How many structures of F is possible? a) 2 b) 5 c) 6 d) 3 35. Reaction of alkyl halides with aromatic compounds in presence of anhy. AlCl3 is known as a) Friedel-Craft’s reaction b) Hofmann degradation c) Kolbe’s synthesis d) Beckmann rearrangement 36. Identify A and B in the following reaction C2H5Cl A → C2H5OH B ← C2H5Cl a) A= aqueous KOH; B= AgOH b) A= alcoholic KOH/ ∆; B=aqueous NaOH c) A= aqueous NaOH; B= AgNO2 d) A = AgNO2; B = KNO2 37. The catalyst used in the preparation of an alkyl chloride by the action of dry HCl on an alcohol is a) anhy. AlCl3 b) FeCl3 c) anhy. ZnCl2 d) Cu 38. When CHCl3 is boiled with NaOH, it gives a) Formic acid b) Trihydroxy methane c) Acetylene d) Sodium formate 39. The order of reactivities of methyl halides in the formation of Grignard reagent is a) CH3I > CH3Br > CH3Cl b) CH3Cl > CH3Br > CH3I c) CH3Br > CH3Cl > CH3I d) CH3Br > CH3I > CH3Cl 40. Iodoform test is not given by a) HCHO b) CH3CHO c) CH3COCH3 d) C2H5OH 41. The product of vinyl chloride and HCl is a a) gem chloride b) Ethylidene chloride c) 1, 1 dichloroethane d) All of the above are correct 42. Identify A and B in the following reactions A Aq.NaOH → ∆ C2H5OH AgOH ← B a) A = C2H2, B = C2H6 b) A = C2H5Cl, B = C2H4 c) A = C2H4, B = C2H5Cl d) A = C2H5Cl, B = C2H5Cl 43. Which of the following will not form a yellow precipitate on heating with an alkaline solution of iodine? a) CH3 CH(OH)CH3 b) CH3 CH2CH(OH)CH3 c) CH3OH d) CH3 CH2OH 44. The best method for the conversion of an alcohol into an alkyl chloride is by treating the alcohol with a) PCl3 b) PCl5 c) SOCl2in presence of pyridine d) dry HCl in the presence of anhydrous ZnCl2 45. Of the isomeric hexanes, the isomers that give the minimum and maximum number of monochloro