General Organic Chemistry PYQs Set 12 (PDF)

Set 12 of 22 · Questions 331-360 of 650

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Mere Teacher · Previous Year Questions NEET Chemistry · General Organic Chemistry · Set 12 (Q331-360)
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331. $Among the following compound which can be dehydrated very easily is :$ (1) (2) (3) (4) 332. $Which of these factors does not govern the stability of a conformation in acyclic compounds?$ (1) $Steric interactions$ (2) $Torsional strain$ (3) $Electrostatic forces of interaction$ (4) $Angle strain$ 333. $Among the following compounds which can be dehydrated very easily$ (1) (2) (3) (4) 334. $IUPAC name of is :$ (1) $3-Methyl cyclohexene$ (2) $1-Methyl cyclohex-2-ene.$ (3) $6-Methyl cyclohexene$ (4) $1-Methyl cyclohex-5-ene.$ 335. $The compound which shows metamerism is:$ (1) $C_{3} H_{8} O$ (2) $C_{3} H_{6} O$ (3) $C_{4} H_{10} O$ (4) $C_{5} H_{12}$ 336. $The incorrect statement regarding conformations of ethane is:$ (1) $Ethane has infinite number of conformations$ (2) $The dihedral angle in staggered conformation is 60^{\circ}$ (3) $Eclipsed conformation is the most stable conformation.$ (4) $The conformations of ethane are interconvertible to one-another.$ 337. $The interaction between π bond and lone pair of electrons present on an adjacent atom is responsible for$ (1) $Hyperconjugation$ (2) $Inductive effect$ (3) $Electromeric effect$ (4) $Resonance effect$ 338. $Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R): Assertion (A): A simple distillation can be used to separate a mixture of propanol and propanone. Reason (R) : Two liquids with a difference of more than 20\circC in their boiling points can be separated bysimple distillations. choose the answer from the options given below :$ (1) $(A) is false but (R) is true.$ (2) $Both (A) and (R) are correct but (R) is not the correct explanation of (A).$ (3) $(A) is true but (R) is false.$ (4) $Both (A) and (R) are correct and (R) is the correct explanation of (A).$ 339. $The incorrect IUPAC name is$ (1) $H_{3} C - C (= O) - C H_{3} C H - C H_{3} -2-methyl-3-butanone$ (2) (3) $H_{3} C - C \equiv C - C H_{3} C C H_{3} - C H_{3} -4-methyl-2-pentyne$ (4) $H_{3} C - C l C H - B r C H_{2} -3-bromo-2-chlorobutane$ 340. $The correct stability order of carbocations is$ (1) $(CH_{3})_{3} C^{+} > CH_{3} - C + H_{2} > (CH_{3})_{2} C + H > C + H_{3}$ (2) $C + H_{3} > (CH_{3})_{2} C + H > CH_{3} - C + H_{2} > (CH_{3})_{3} C +$ (3) $(CH_{3})_{3} C + > (CH_{3})_{2} C + H > CH_{3} - C + H_{2} > C + H_{3}$ (4) $C + H_{3} > C H_{3} - C + H_{2} > C H_{3} - C + H - C H_{3} > (C H_{3})_{3} C +$ 341. $Ionic reactions with organic compounds proceed through: (A) Homolytic bond cleavage(B) Heterolytic bond cleavage(C) Free radical formation(D) Primary free radical(E) Secondary free radical Choose the correct answer from the options given below:$ (1) $(A) only$ (2) $(C) only$ (3) $(B) only$ (4) $(D) and (E) only$ 342. $Staggered and eclipsed conformers of ethane are :$ (1) $Polymers$ (2) $Rotamers$ (3) $Enantiomers$ (4) $Mirror images$ 343. $The following reaction is described as$ (1) $S_{N} 2$ (2) $S_{N} 0$ (3) $S_{E} 2$ (4) $S_{N} 1$ 344. $A chemist has 4 samples of artificial sweetener A, B, C and D . To identify these samples, he performed certain experiments and noted the following observations: (i) A and D both form blue-violet colour with ninhydrin. (ii) Lassaigne extract of C gives positive AgN O_{3} test and negative F e_{4} [Fe (CN)_{6}]_{3} test. (iii) Lassaigne extract of B and D gives positive sodium nitroprusside test. Based on these observations which option is correct?$ (1) $A - Saccharine, B - Aspartame, C - Sucralose, D - Alitame$ (2) $A - Aspartame, B - Saccharine, C - Sucralose, D - Alitame$ (3) $A - Saccharine, B - Aspartame, C - Alitame, D - Sucralose$ (4) $A - Aspartame, B - Saccharine, C - Alitame, D- Sucralose$ 345. $Methoxy methane and ethanol are$ (1) $functional isomers$ (2) $optical isomers$ (3) $position isomers$ (4) $chain isomers.$ 346. $IUPAC name of the following molecule is$ (1) $6-Bromo-4-chloro-3,7-diethyl-5-oxo-8-yne-2nonene$ (2) $6-Chloro-4-bromo-3,7-diethyl-5-keto-7-ene-1nonene$ (3) $4-Chloro-6-bromo-3,7-diethyl-5-keto-8-yn-2nonene$ (4) $4-Bromo-6-chloro-3,7-diethylnon-7-en-1-yn-5-one$ 347. $The IUPAC name of the following compound is$ (1) $3 - Bromo - 5 - methylcyclopentane carboxylic acid$ (2) $3 - Bromo - 5 - methylcyclopentanoic acid$ (3) $5 - Bromo-3-methylcyclopentanoic acid$ (4) $4 - Bromo - 2 - methylcyclopentane carboxylic acid$ 348. $In 3,3-dimethylhex-1-en-4-yne, there are sp^{3}, sp^{2} and sp hybridized carbon atoms respectively.$ (1) $4, 2, 2$ (2) $2, 4, 2$ (3) $3, 3, 2$ (4) $2, 2, 4$ 349. $Which of the following has highly acidic hydrogen?$ (1) (2) (3) (4) 350. $The total number of π ‐bond electrons in the following structure is$ (1) $12$ (2) $16$ (3) $4$ (4) $8$ 351. $The major product of the following reaction is :$ (1) $C H_{3} CH=C= C H_{2}$ (2) $C H_{3} CH= C H C H_{2} N H_{2}$ (3) $CH3CH2C\equivCH$ (4) $C H_{3} C H_{2} C H (N H_{2}) - C H_{2} N H_{2}$ 352. $The correct IUPAC name of the following compound is:$ (1) $5 -chloro- 4 -methyl- 1 -nitrobenzene$ (2) $2 -chloro- 1 -methyl- 4 -nitrobenzene$ (3) $3 -chloro- 4 -methyl- 1 -nitrobenzene$ (4) $2 -methyl- 5 -nitro- 1 -chlorobenzene$ 353. $In the following halogenated organic compounds the one with maximum number of chlorine atoms in its structure is :$ (1) $Chloral$ (2) $Gammaxene$ (3) $Chloropicrin$ (4) $Freon-12$ 354. $Which one of the following compounds is non-aromatic ?$ (1) (2) (3) (4) 355. $Amongst the following compounds, the optically acitve alkane having lowest molecular mass is$ (1) $C H_{3} - C H_{2} - C H_{2} - C H_{3}$ (2) $C H_{3} - C H_{2} - C H (C H_{3}) - C H_{3}$ (3) (4) $CH3-CH2-C\equivCH$ 356. $The reaction : (C H_{3})_{3} C-Br H_{2} O (C H_{3})_{3} C-OH is an example of -$ (1) $elimination reaction.$ (2) $substitution reaction.$ (3) $free radical reaction.$ (4) $rearrangement reaction.$ 357. $The IUPAC name of ethylidene chloride is :-$ (1) $1-Chloroethene$ (2) $1-Chloroethyne$ (3) $1,2-Dichloroethane$ (4) $1,1-Dichloroethane$ 358. $Out of the following, the alkene that exhibits optical isomerism is.$ (1) $3-methyl-2pentene$ (2) $4-methyl-1-pentene$ (3) $3-methyl-1-pentene$ (4) $2-methyl-2-pentene$ 359. $The correct order of acid character of the following compounds is:$ (1) $II > III > IV > I$ (2) $III > II > I > IV$ (3) $IV > III > II > I$ (4) $I > II > III > IV$ 360. $The ascending acidity order of the following H atoms is$ (1) $C < D < B < A$ (2) $A < B < C < D$ (3) $A < B < D < C$ (4) $D < C < B < A$