General Organic Chemistry PYQs Set 13 (PDF)

Set 13 of 25 · Questions 361-390 of 724

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Mere Teacher · Previous Year Questions JEE Main Chemistry · General Organic Chemistry · Set 13 (Q361-390)
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361. $The chemical name of anisole is$ (1) $propanone$ (2) $acetone$ (3) $ethanoic acid$ (4) $methoxybenzene.$ 362. $Given below are two statements: Statement (I) : Aminobenzene and aniline are same organic compounds. Statement (II) : Aminobenzene and aniline are different organic compounds. In the light of the above statements, choose the most appropriate answer from the options given below:$ (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) $Both Statement I and Statement II are incorrect$ 363. $Which among the following is incorrect statement?$ (1) $Electromeric effect dominates over inductive effect$ (2) $The electromeric effect is, temporary effect$ (3) $Hydrogen ion (H^{+}) shows negative electromeric effect$ (4) $The organic compound shows electromeric effect in the presence of the reagent only.$ 364. $Which is the best reagent to convert cyclohexanol into cyclohexene.$ (1) $conc. HCl$ (2) $conc. HBr$ (3) $conc. H_{3} P O_{4}$ (4) $HCl + Z n C l_{2}$ 365. $The IUPAC name of the given compound is$ (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) $2-ethyl-5-hydroxy-3-methylhept-3-enal$ 366. $Example of vinylic halide is$ (1) (2) (3) (4) 367. (1) (2) (3) (4) 368. $Given below are two statements : Statement I : In 'Lassaigne's Test, when both nitrogen and sulphur are present in an organic compound, sodium thiocyanate is formed. Statement II : If both nitrogen and sulphur are present in an organic compound, then the excess of sodium used in sodium fusion will decompose the sodium thiocyanate formed to give NaCN and N a_{2} S. choose the most appropriate answer from the options given below:$ (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) $Statement I is incorrect but Statement II is correct.$ 369. $Given below are two statements: Statement I: IUPAC name of HO - CH_{2} - (CH_{2})_{3} - CH_{2} - COCH_{3} is 7-hydroxyheptan-2-one. Statement II: 2-oxoheptan-7-ol is the correct IUPAC name for above compound. In the light of the above statements. choose the most appropriate answer from the options given below:$ (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) $Statement I is incorrect but Statement II is correct.$ 370. $On mixing ethyl acetate with aqueous sodium chloride, the composition of the resultant solution is :$ (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) $C H_{3} COONa + C_{2} H_{5} OH$ 371. $In which of the following, homolytic bond fission takes place?$ (1) $Free radical chlorination of methane$ (2) $Alkaline hydrolysis of ethyl chloride$ (3) $Addition of HBr to double bond$ (4) $Nitration of Benzene$ 372. $The absolute configuration of is$ (1) $R, R$ (2) $R, S$ (3) $S, R$ (4) $S, S$ 373. $The IUPAC name for is$ (1) $3‐amino‐5‐heptenoic acid$ (2) $β - amin o - δ ‐heptenoic acid$ (3) $5‐amino‐2‐heptenoic acid$ (4) $5‐amino‐hex‐2‐enecarboxylic acid.$ 374. $Among the following compound which can be dehydrated very easily is :$ (1) (2) (3) (4) 375. $Which of these factors does not govern the stability of a conformation in acyclic compounds?$ (1) $Steric interactions$ (2) $Torsional strain$ (3) $Electrostatic forces of interaction$ (4) $Angle strain$ 376. $Among the following compounds which can be dehydrated very easily$ (1) (2) (3) (4) 377. $IUPAC name of is :$ (1) $3-Methyl cyclohexene$ (2) $1-Methyl cyclohex-2-ene.$ (3) $6-Methyl cyclohexene$ (4) $1-Methyl cyclohex-5-ene.$ 378. $The compound which shows metamerism is:$ (1) $C_{3} H_{8} O$ (2) $C_{3} H_{6} O$ (3) $C_{4} H_{10} O$ (4) $C_{5} H_{12}$ 379. $The incorrect statement regarding conformations of ethane is:$ (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) $The conformations of ethane are interconvertible to one-another.$ 380. $The interaction between π bond and lone pair of electrons present on an adjacent atom is responsible for$ (1) $Hyperconjugation$ (2) $Inductive effect$ (3) $Electromeric effect$ (4) $Resonance effect$ 381. $Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R): Assertion (A): A simple distillation can be used to separate a mixture of propanol and propanone. Reason (R) : Two liquids with a difference of more than 20\circC in their boiling points can be separated bysimple distillations. choose the answer from the options given below :$ (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) $Both (A) and (R) are correct and (R) is the correct explanation of (A).$ 382. $The incorrect IUPAC name is$ (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) $H_{3} C - C l C H - B r C H_{2} -3-bromo-2-chlorobutane$ 383. $The correct stability order of carbocations is$ (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) $C + H_{3} > C H_{3} - C + H_{2} > C H_{3} - C + H - C H_{3} > (C H_{3})_{3} C +$ 384. $Ionic reactions with organic compounds proceed through: (A) Homolytic bond cleavage(B) Heterolytic bond cleavage(C) Free radical formation(D) Primary free radical(E) Secondary free radical Choose the correct answer from the options given below:$ (1) $(A) only$ (2) $(C) only$ (3) $(B) only$ (4) $(D) and (E) only$ 385. $Staggered and eclipsed conformers of ethane are :$ (1) $Polymers$ (2) $Rotamers$ (3) $Enantiomers$ (4) $Mirror images$ 386. $The following reaction is described as$ (1) $S_{N} 2$ (2) $S_{N} 0$ (3) $S_{E} 2$ (4) $S_{N} 1$ 387. $A chemist has 4 samples of artificial sweetener A, B, C and D . To identify these samples, he performed certain experiments and noted the following observations: (i) A and D both form blue-violet colour with ninhydrin. (ii) Lassaigne extract of C gives positive AgN O_{3} test and negative F e_{4} [Fe (CN)_{6}]_{3} test. (iii) Lassaigne extract of B and D gives positive sodium nitroprusside test. Based on these observations which option is correct?$ (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) $A - Aspartame, B - Saccharine, C - Alitame, D- Sucralose$ 388. $Methoxy methane and ethanol are$ (1) $functional isomers$ (2) $optical isomers$ (3) $position isomers$ (4) $chain isomers.$ 389. $IUPAC name of the following molecule is$ (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) $4-Bromo-6-chloro-3,7-diethylnon-7-en-1-yn-5-one$ 390. $The IUPAC name of the following compound is$ (1) $3 - Bromo - 5 - methylcyclopentane carboxylic acid$ (2) $3 - Bromo - 5 - methylcyclopentanoic acid$ (3) $5 - Bromo-3-methylcyclopentanoic acid$ (4) $4 - Bromo - 2 - methylcyclopentane carboxylic acid$