CPS (Chapterwise Practice Sheet)
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1 CPS (Chapterwise Practice Sheet) C-CPS-1 General Organic Chemistry IUPAC Nomenclature (NCERT-CBSE) for NEET/AIIMS/JIPMER/JEE MULTIPLE CHOICE QUESTIONS (MCQs) both in English and Tamil 1. According to IUPAC, What is the systematic name of the following hydrocarbon? CH 3 a. 2- ethyl- 3 -isopropyol hexane b. 3- isopropyl -5 - methyl heptanes c. 3- ethyl -2,5- dimethyl heptanes d. 5- ethyl-3,6- dimethyl heptanes 2. The correct structure of compound 3, 6- diisopropyl-2, 6-dimethyl nonane is a. b. c. d. 3. According to IUPAC convention, what is the name of compound given below? C H 3 a. 1- ethyl-3- methyl-4- propyl cyclohexane b. 3- ethyl-1- methyl-2- propyl cyclohexane c. 5- ethyl-1- methyl-2- propyl cyclohexane d. 4- ethyl-2- methyl-1- propyl cyclohexane 4. A hydrocarbon has molar mass of 100 g with 4 methyl groups. Also, it has quaternary carbon atom. What is the identity of this hydrocarbon? a. 2,4-dimethyl pentane b. 2,2,3-trimethyl butane c. 2,2-dimethyl pentane d. 2,3-dimethyl pentane 5. According to IUPAC convention, the correct name of the following compound is
2 a. 1-(1,1,-dimethyl propyl) cyclobutane b. 1-cyclobutyl-1,1-dimethyl propane-i c. 2-cyclobutyl-2-methyl butane d. 1-(1-methylbutyl) cyclobutane-i 6. The correct structural formula of 1,2-diethyl-1,8-dimethyl-5-propyl cyclooctane is a) CH 3 b) H3C CH3 c) CH CH H C H C d) 7. According to IUPAC, what is the systematic name of the compound shown below? a. 2,5,6-triethyl-1,3,4-trimethyl cyclohexane b. 1,2,4-triethyl-3,5,6-trimethyl cyclohexane c. 1,3,4-triethyl-2,5,6--trimethyl cyclohexane d. 1,2,5-triethyl-3,4,6-trimethyl cyclohexane 8. What is the systematic IUPAC name of the following compound? a. 1-methyl bicyclo [3,2,1] octane b. 8-methyl bicyclo [3,2,1] octane c. 6-methyl bicyclo [3,2,1] octane d. 8-methyl tricyclo [3,2,1] octane
3 9. The correct structure of cyclobutylmethyl cyclopentane is a) b) 10. According to IUPAC convention, name of the following compound is c) d) a.3-ethyl-4-methylcyclopentyl cyclopentane b. 4-ethyl-3-methylcyclopentyl cyclopentane c. 1-cyclopentyl-3-ethyl-4-methyl cyclopentane d. 4-cyclopentyl-1-ethyl-2-methyl cyclopentane 11. What is IUPAC name of the compound shown below? a. 1-bromo-3,3-dichloro-4-methyl cyclohexane b. 3-bromo-1,1-dichloro-6-methyl cyclohexane c. 5-bromo-1,1-dichloro-2-methyl cyclohexane d. 4-bromo-2,2-dichloro-1-methyl cyclohexane 12. According to IUPAC convention, which of the following is an incorrect name of compound C 6 H 14? IUPAC C 6 H 14 a. 2-methylpentane b. 2,3-dimethyl butane c. 2,2-dimethyl butane d. 2-ethyl butane 13. The correct IUPAC name of the compound shown below is a. 1-bromo-2-(1,2-dichloropropyl) cyclopropane b. 2-bromo-1-(1,2-dichloropropyl) cyclopropane
4 c. 1-bromocyclopropyl-1,2-dichloro propane d. 1-(2-bromocyclopropyl)-1,2-dichloropropane 14. How many different IUPAC names (excluding stereochemical designation) can be written for C 3 H 6? C 3 H 6 a. 3 b.4 c. 5 d Assuming a hydrocarbon C 5 H 10 without any double bond, how many different structures exist that contain only one methyl group? C 5 H 10 a.1 b.2 c.3 d The correct IUPAC name of the compound shown below is a. spiro [4,3] octane b.cyclobutyl cyclopentane c. spiro [4,5] octane d. spiro [3,4] octane 17. What is the official name of the compound shown below? a. Tetrachloromethylmethane b. 2,2-bis(chloromethyl)-1,3-dichloropropane c. 1,3-dichloro-2,2-bis(chloromethyl)propane d. 1,2,2,3-tetrachloropropane 18. How many different names (without considering stereoisomers) can be written for C 3 H 5 3? C 3 H 5 3 a. 3 b. 4 c. 5 d According to IUPAC convention, the systematic name of the compound given below is F a. 1-(3- chlorocyclohexyl)-4-(4- bromocyclohexyl)-2- fluorocyclohexane
5 b. 5-(4- bromocyclohexyl)-2-(3- chlorocyclohexyl)-1- fluorocyclohexane c. 4-(4- bromocyclohexyl)-4-(3- chlorocyclohexyl)-3- fluorocyclohexane d. None 20. The correct IUPAC name of the following compound is a. 3- ethyl-3- isopropyl-4- tertiarybutyl hexane b. 3,3 4- triethyl-2, 5, 5- trimethyl hexane c. 3, 4- diethyl-4- isopropyl-2, 2- dimethyl hexane d. 3, 4, 4- triethyl-2, 2, 5- trimethyl hexane 21. One of the names given below violates an important IUPAC convention. IUPAC a. 2- cylclopropyl-2- methyl propane b. 2- bromo-4- chlorobutane c. Ethyl pentane d. 3- bromo-1, 1- dichlorocyclohexane 22. What is the IUPAC name of the compound shown below? a. Tetracyclopropyl cyclopropane b. pentacyclopropane c. 1, 2, 2, 3- tetracyclopropyl cyclopropane d. 1, 1, 2, 3- tetracyclopropyl cyclopropane 23. A hydrocarbon X has molar mass 84 but contain no double or triple bonds. Also X has no methyl locant. How many different IUPAC names can be assigned to X? X IUPAC a. 2 b. 3 c. 4 d Which of the following is an incorrect name according to IUPAC? IUPAC a. 2- cyclopropyl butane b. 1- bromo-2, 2- dichloro cyclobutane c. Cyclohexyl cyclohexane d. 1- cyclobutyl cyclobutane 25. A hydrocarbon X has the molecular formula C 5 H 8 and it does not has any sp 2 or sp hybridized carbons. How many different IUPAC names are possible for X? X C 5 H 8 sp 2 /sp IUPAC
6 a. 3 b. 4 c. 5 d A hydrocarbon X has molecular formula C 8 H 18. Substitution of hydrogen of X by bromine atom gives one single bromo alkane. Hence, compound X is. X C 8 H 18 a. 2, 5- dimethyl hexane b. diethyl pentane c. 2, 3, 4- trimethyl butane c. 2, 2, 3, 3- tetramethyl butane 27. A hydrocarbon X has molecular formula C 7 H 16.X can be obtained by hydrogenation of only one alkene with molecular formula C 7 H 14. What is the correct IUPAC name of X? X C 7 H 16 C 7 H 14 a. 2, 2-dimethyl pentane b. 2,3-dimethyl pentane c. 2, 2, 3-trimethyl butane d. Heptane 28. How many different alkenes, on adding one molecule of H 2, can give 3, 3, 4, 4-tetramethyl hexane? a. 1 b. 3 c. 5 d What is the correct IUPAC name of the compound shown below? C H 3 a. 4-butyl-2, 3, 6, 7-tetramethyl-5-propyl octane b. 4, 5-bis( 1, 2-dimethyl propyl) nonane c. 5-( 1, 2-dimethyl propyl)-2,3-dimethyl-4-propyl nonane d. Both b and c are correct 30. How many different IUPAC names can be assigned to the compounds with molecular formula C 5 H 11 (excluding stereoisomers)? C 5 H 11 a. 4 b. 6 c. 7 d A hydrocarbon X has molecular formula C 13 H 28. If X is subjected to chlorination, only two monochloro derivatives with molecular formula (C 13 H 27 ) are obtained (excluding stereoisomers),. What is the IUPAC name of X? X C 13 H 28 C 13 H 27 X a. 4, 4-dipropyl heptanes CH3
7 b. 3, 3-diethyl-2, 4-dimethyl pentane c. 3, 3-diisopropyl-2, 4-dimethyl pentane d. Both b and c satisfy the given condition 32. What is the correct IUPAC name of the compound? a. 4-bromo-2-chlorocyclohexence b. 3-bromo-1-chlorocyclohexene c. 5-bromo-1-chlorocyclohexene d. 1-bromo-3-chloro-3-cyclohexene 33. An alkene X has molecular formula C 6 H 12 with a quaternary carbon atom. Which is the correct IUPAC name possible for X? X C 6 H 12 IUPAC X a. 2, 3-dimethyl-1-butene b. 2, 3-dimethyl-2-butene c. 3, 3-dimethyl-1-butene d. 3, 3-dimethyl-2-butene 34. What is Wrong in the name 3, 3-dimethyl-3-heptene? a. Parent chain in wrongly numbered b. Locants position is wrongly numbered c. Double bond has not been given preference in numbering d. One of the carbon is violating octet rule 35. Which of the following cannot be assigned as a unique IUPAC name to a compound? a. Dichloroethene b. Trichloroethene c. Tetrachloroethene d. chloroethene 36. Which of the following has an sp- hybridized carbon atom? sp a. Cyclopropene b. Bicyclobutane c. Propadiene d. 1,3-butadiene 37. A halogenated compound X has molecular formula C 3 l 3 and no cyclic structure. Also sum of the position of all three chlorine is 8. What is the correct IUPAC name of X? X C 3 l 3 IUPAC X a. 2, 3, 3-trichloro-2-propene b. 2, 3, 3-trichloro-1-propene c. 2, 2,4-trichloro-2-propene d. 2, 2, 4-trichloro-1-propene
8 38. What is the correct IUPAC name of the compound shown below? a. 5, 6-dibromo-6-chloro-1, 3-cyclohexadiene b. 2, 3-dibromo-2-chloro-1, 4-cyclohexadiene c. 1, 2-dibromo-1-chloro-3,5-cyclohexadiene d. 5,6-dibromo-5-chloro-1,3-cyclohexadiene 39. What is the correct IUPAC name of the compound shown below? a. 1,1,2-trichloro-4-cyclobutenyl cyclohexane b. 3-trichlorocyclohexyl cyclobutene c. 3-(3,4,4-trichlorocyclohexyl) cyclobutane d. 3,4,4-trichloro-1-cyclobutenyl cyclohexane 40. What is wrong in the name cyclobutadiene as per IUPAC convention? a. Position of two double bonds are not mentioned b. This name is not possible as it volatile bonding principles c.there cannot be two continuous double bonds in cyclobutyl ring d. There is nothing wrong in this name 41. If a hydrogen of 1,3-pentadiene is substituted by chlorine, how many different IUPAC names (excluding stereochemical designation) can be assigned to the chlorinated dienes? a. 2 b. 3 c. 4 d What is the correct IUPAC name of the following compound? H 2 C CH 2 C H 3 a. 4-( 1-propenyl)-1, 8-nonadiene b. 5-(2-propenyl)-3, 9-decadiene c. 6-(2-propenyl)-1, 7-decadiene d. 4-(1 butenyl)-1, 8-nonadiene 43. What is correct IUPAC name of the compound shown below?
9 a. Bis (cyclopentenyl) cyclobutadiene b. 1, 3-bis (3-cyclopentenyl) cyclobutadiene c. Dicyclopentene cyclobutadiene d. 4-(3-(3-cyclopentenyl)-1,3-cyclobutadienyl) cyclopentene 44. How many distinct terminal alkynes exist with molecular formula C 5 H 8? C 5 H 8 a. 1 b. 2 c. 3 d Which of the following alkyne has four of its carbon atom present on a straight line? a. 1-hexyne b. 3-methyl-1-pentyne c. 3, 3-dimethyl butyl d.2-hexyne END OF THE QUESTION PAPER Challenging problem?????? H 3 H 3 C C
10 INSPIRE NEET/JEE ACADEMY CPS (Chapterwise Practice Sheet) Name: CPS No :. ass & Section:.. Q Answer Q Answer Q Answer 1 A B C D 16 A B C D 31 A B C D 2 A B C D 17 A B C D 32 A B C D 3 A B C D 18 A B C D 33 A B C D 4 A B C D 19 A B C D 34 A B C D 5 A B C D 20 A B C D 35 A B C D 6 A B C D 21 A B C D 36 A B C D 7 A B C D 22 A B C D 37 A B C D 8 A B C D 23 A B C D 38 A B C D 9 A B C D 24 A B C D 39 A B C D 10 A B C D 25 A B C D 40 A B C D 11 A B C D 26 A B C D 41 A B C D 12 A B C D 27 A B C D 42 A B C D 13 A B C D 28 A B C D 43 A B C D 14 A B C D 29 A B C D 44 A B C D 15 A B C D 30 A B C D 45 A B C D Performance scale: Total: 45x4=180 marks Marks obtained Performance Make tick mark 180 out of 180 Exemplary learner 150 to 179 Fair learner 100 to 149 Average learner 10 to 99 Below average learner
11 Answers Q.No Answer Q.No Answer Q.No Answer 1 C 16 D 31 C 2 B 17 C 32 C 3 D 18 C 33 C 4 C 19 C 34 D 5 C 20 D 35 A 6 D 21 B 36 C 7 B 22 D 37 B 8 B 23 C 38 D 9 A 24 B 39 C 10 D 25 C 40 D 11 C 26 D 41 D 12 D 27 C 42 C 13 D 28 A 43 B 14 C 29 C 44 B 15 B 30 D 45 D For solutions
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