General Organic Chemistry PYQs Set 11 (PDF)

Set 11 of 22 · Questions 301-330 of 650

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Mere Teacher · Previous Year Questions NEET Chemistry · General Organic Chemistry · Set 11 (Q301-330)
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301. $Tautomerism is exhibited by$ (1) $R_{3} C N O_{2}$ (2) $R C H_{2} N O_{2}$ (3) $(C H_{3})_{3} C N O$ (4) $(C H_{3})_{2} N H$ 302. $Geometrical isomers differ in$ (1) $position of functional group$ (2) $position of atoms$ (3) $spatial arrangement of atoms$ (4) $length of carbon chain.$ 303. $Paper chromatography is an example of :$ (1) $Partition chromatography$ (2) $Thin layer chromatography$ (3) $Column chromatography$ (4) $Adsorption chromatography$ 304. $Acetone and propanal are$ (1) $functional isomers$ (2) $position isomers$ (3) $geometrical isomers$ (4) $optical isomers.$ 305. $The homologue of ethyne is :$ (1) $C2H2$ (2) $C2H6$ (3) $C3H8$ (4) $C3H4$ 306. $Which is optically inactive ?$ (1) (2) (3) (4) $None of these$ 307. $'Adsorption' principle is used for which of the following purification method?$ (1) $Extraction$ (2) $Chromatography$ (3) $Distillation$ (4) $Sublimation$ 308. $Base strength of is in the order of$ (1) $(i) > (iii) > (ii)$ (2) $(i) > (ii) > (iii)$ (3) $(ii) >_{(} i_{)} >_{(} ii i_{)}$ (4) $(iii) >_{(} i i_{)} >_{(} i_{)}$ 309. $Which one of the following techniques is not used to spot components of a mixture separated on thin layer chromatographic plate?$ (1) $I_{2} (Solid)$ (2) $U.V. Light$ (3) $Visualisation agent as a component of mobile$ (4) $Spraying of an appropriate reagent$ 310. $Which among the following has highest boiling point?$ (1) $CH_{3} CH_{2} CH_{2} CH_{3}$ (2) $CH_{3} CH_{2} CH_{2} CH_{2} - OH$ (3) $CH_{3} CH_{2} CH_{2} CHO$ (4) $H_{5} C_{2} - O - C_{2} H_{5}$ 311. $Isomers of a substance must have the same$ (1) $structural formula$ (2) $physical properties$ (3) $chemical properties$ (4) $molecular formula.$ 312. $Which of the following statements is not correct for a nucleophile?$ (1) $Ammonia is a nucleophile.$ (2) $Nucleophiles attack low e^{-} density sites.$ (3) $Nucleophiles are not electron seeking.$ (4) $Nucleophile is a Lewis acid.$ 313. $Which one of the following is most reactive towards electrophilic reagent?$ (1) (2) (3) (4) 314. $Which of the following has the lowest dipole moment?$ (1) (2) $C H_{3} C \equiv C C H_{3}$ (3) $C H_{3} C H_{2} C \equiv C H$ (4) $C H_{2} = C H - C \equiv C H$ 315. $The formula of the purple colour formed in Laissaigne's test for sulphur using sodium nitroprusside is$ (1) $NaFe[Fe (C N)_{6}]$ (2) $Na[Cr (N H_{3})_{2} (N C S)_{4}]$ (3) $N a_{2} [Fe (C N)_{5} (NO)]$ (4) $N a_{4} [Fe (C N)_{5} (NOS)]$ 316. $Which one of the carbanions is the least stable?$ (1) $C ⊖ H_{2} - NO_{2}$ (2) $C ⊖ H_{2} - CHO$ (3) $C ⊖ H_{2} - CH_{3}$ (4) $C ⊖ H_{3}$ 317. $Order of increasing acidic strength$ (1) $I > II > III$ (2) $II > III > I$ (3) $I > III > II$ (4) $III > II > I$ 318. $The chemical name of anisole is$ (1) $propanone$ (2) $acetone$ (3) $ethanoic acid$ (4) $methoxybenzene.$ 319. $Given below are two statements: Statement (I) : Aminobenzene and aniline are same organic compounds. Statement (II) : Aminobenzene and aniline are different organic compounds. In the light of the above statements, choose the most appropriate answer from the options given below:$ (1) $Both Statement I and Statement II are correct$ (2) $Statement I is correct but Statement II is incorrect$ (3) $Statement I is incorrect but Statement II is correct$ (4) $Both Statement I and Statement II are incorrect$ 320. $Which among the following is incorrect statement?$ (1) $Electromeric effect dominates over inductive effect$ (2) $The electromeric effect is, temporary effect$ (3) $Hydrogen ion (H^{+}) shows negative electromeric effect$ (4) $The organic compound shows electromeric effect in the presence of the reagent only.$ 321. $Which is the best reagent to convert cyclohexanol into cyclohexene.$ (1) $conc. HCl$ (2) $conc. HBr$ (3) $conc. H_{3} P O_{4}$ (4) $HCl + Z n C l_{2}$ 322. $The IUPAC name of the given compound is$ (1) $6-formyl-3-hydroxy-5-methyloct-4-ene$ (2) $5-hydroxy-2-ethyl-3-methylhept-3-enal$ (3) $3-methyl-2-ethyl-5-hydroxy hept-3-enal$ (4) $2-ethyl-5-hydroxy-3-methylhept-3-enal$ 323. $Example of vinylic halide is$ (1) (2) (3) (4) 324. (1) (2) (3) (4) 325. $Given below are two statements : Statement I : In 'Lassaigne's Test, when both nitrogen and sulphur are present in an organic compound, sodium thiocyanate is formed. Statement II : If both nitrogen and sulphur are present in an organic compound, then the excess of sodium used in sodium fusion will decompose the sodium thiocyanate formed to give NaCN and N a_{2} S. choose the most appropriate answer from the options given below:$ (1) $Both Statement I and Statement II are correct$ (2) $Both Statement I and Statement II are incorrect.$ (3) $Statement I is correct but Statement II is incorrect.$ (4) $Statement I is incorrect but Statement II is correct.$ 326. $Given below are two statements: Statement I: IUPAC name of HO - CH_{2} - (CH_{2})_{3} - CH_{2} - COCH_{3} is 7-hydroxyheptan-2-one. Statement II: 2-oxoheptan-7-ol is the correct IUPAC name for above compound. In the light of the above statements. choose the most appropriate answer from the options given below:$ (1) $Statement I is correct but Statement II is incorrect.$ (2) $Both Statement I and Statement II are incorrect.$ (3) $Both Statement I and Statement II are correct.$ (4) $Statement I is incorrect but Statement II is correct.$ 327. $On mixing ethyl acetate with aqueous sodium chloride, the composition of the resultant solution is :$ (1) $C H_{3} C O O C_{2} H_{5} + NaCl$ (2) $C H_{3} Cl + C_{2} H_{5} COONa$ (3) $C H_{3} COCl + C_{2} H_{5} OH + NaOH$ (4) $C H_{3} COONa + C_{2} H_{5} OH$ 328. $In which of the following, homolytic bond fission takes place?$ (1) $Free radical chlorination of methane$ (2) $Alkaline hydrolysis of ethyl chloride$ (3) $Addition of HBr to double bond$ (4) $Nitration of Benzene$ 329. $The absolute configuration of is$ (1) $R, R$ (2) $R, S$ (3) $S, R$ (4) $S, S$ 330. $The IUPAC name for is$ (1) $3‐amino‐5‐heptenoic acid$ (2) $β - amin o - δ ‐heptenoic acid$ (3) $5‐amino‐2‐heptenoic acid$ (4) $5‐amino‐hex‐2‐enecarboxylic acid.$