Scanned By Camera Scanner2 STRUCTURAL ISoMERISN: 13. Which isomer 2 ne OF Git has two isopropyl! Dy) 2) 3-Methylpent: e oe 4) 22.Dimethybutane Pe oe ‘structural alcoholic isomers oy Pe D3 a4 45 number of aromatic isomers possible for CH,O is D2 D3 a4 45 16. The number of isomeric amines possible for the formula C.H,N. n4 Q3 25 46 17. Identity the compound that exhibits tautomerism: 1) 2-pentanol 2) phenol 3) 2-butanone 4) lactic acid 18. How many dibromobenzenes are possible? DI D2 323 94 19. The number of all the possible isomers of chlorobutane is 2 24 26 45 ° 20. (A) CH, -CH, -CHO; ®) cr, -t-cH, Relation between (A) and (B) is 1) chain isomers _2) positional isomers 3) functional isomers 4) metamers 21. Which of the following pairs of structures does not represent isomers ? oC Janel oa mb OC 22, The number of ether metamers represented by the molecular formula C,H,)0 Is D1 22 33 44 23. A many positional isomers are possible for 1) chain isomers 3) metamers 1) chain isomers 3) metamers Compound with molecular formula C,H,0. show _[JEE MAIN 2021, 18" Mar: 1) positional isomerism 2) both positional isomerism and 3) metamerism 4) functional group isomerism Which one of the following pairs of an example of metamerism ? [JEE MAIN 2021, 20% of OH HC, and HG 2) CH,CH,CH,CH,CH, and H,C on 3 J and Hs cH, ee p> we > STRUCTURAL ISOMERISM: 29, The number of primary C\Hy0 Is 2 23 34 30, Primary, nC ‘Scanned By Camera Scannereh ofthe following compoundsis isomeric trimethyl amine ? 2) 2-Propanamine @Me&ée@) 4) 2-Butanamine ‘of the following classes of or; .ds show metamerism ? aad ) Ethers 2) Secondary amines ) Ketones 4) All of these type of isomerism found in urea molecule mich moun ) Chain 2) Position ) Tautomerism 4) Geometrical ong the following the pair that is not a pair metamers 1) CH,OCH,CH,CH, & CH,CH,OCH,CH, 2) CH,OCH,CH,CH, & CH,OCH(CH, ), 4) CH,NHCH,CH,CH, & CH,NHCH,CH, 14) CH,COCH,CH,CH, & CH,CH,COCH,CH, dentfythe compound that exhibits tautomerism: 2) Lactic acid 4) Phenol 1) 2Butene 3) 2Pentanone (&) CH,—-CH, ~CH, ~CO2H 5 @ CH-CH- CHL 5 A and (B) are CO,H 1) chain isomers 3) functional isomers 4) metamers OH 0 AH: @ A iad ae 2) functional isomers 4) positional isomers represent isomers? 2) positional isomers 1) chain isomers 3) metamers Which of the following pairs 1) CH,~CH, , CH,—CH, ~CH, 2) H,C=CH—OH , CH,-O~CH; 3) CH,~CH, ~CH, ~ CH, , CHy~ ck ~CH, CH, 4) All of these (A) CH, -CH, ~CH, -C=N3 ® cy, ~CH-CHy CN 40. (A) CH, -O-CH, ~CH, ~ CH, (B) CH, ~CH, ~O-CH, ~CHy Relation between (A) and (B) Is 1) chain isomers 2D) positional isomers 3) functional isomers 4) metamers 41. Which of the following compound will not show tautomerism ? OH OH oe OH OH ry: 42, The number of isomers of CcHiy 1S D4 25 36 43. If two compounds have the same. formula but different molecular. they must have 1) different percentage comp 2) different molecular weight 3) same velocity 4) same 44, An isomer of ethanol is 1) methanol 3) acetone » LEVEL-3 > =sTRUCTURAL ISOMERISM: 45. How many isomeric (excluding st acids are possible for C,H; ? 3 24 3)5 46. Minimum number of carbon at for an alkane to exhibit positio n4 25 36 47, How many secondary amines CHiN ? 04 2)5 26 Which compound Is not isoms methylpentane ? y/VWV- 48. aes between (A) and (B) is iain isomers 2) positional isomers 4) functional isomers 4) metamers ‘Scanned By Camera Scanner7 D 49. Which of the following is not an isomer of '35, Tautomerism will be exhibited by the fol ee oa See on 3) R,CNO, 4) RCH,NO, q Which among the following compounds n /\ a | content in sol 1) CH, -CH, -C~CH, 2) A give maximum eno} c lution? I} Il fe “H, ~C-CH, -C-CH. a. J + 4) CH, «CH-CH, -OH 1) CH, 5 oO 50. Maximum enolisation takes place in 1) CH,COCH, 2) CH,COCH,CHO 3) CH,COCH,COCH, 4) 0 3) CH, -C-CH, -CH, ~CH, 51. Tautomerism is not exhibited by 9 Il = ‘ 4) CH, ~C-CH, -COOCH, om mc a |. Which of the following compound has neglighle enol content ? qQ st ~ inc a x > e 4» (ro S 52. Which of the following is not an example of 0, o tautomeric equilibrium 7 ) { dD 1) CH, 7 ¢-0 ’. Order of stability of enol forms of the fol 4 Y keto forms is 2) N=N-NH = -NH-N=N- oO oO oF 3) >CA-N=0=>C=N-OH a cH,-l-cr, ») cx, -C-cx,-C 4) NH-C=O=-N=C-OH ° ° 53. Among the following compounds, the one © cu, -¢_cn, - which will not show keto-enol tautomerism is cnt cry--0-e1 Darboc 2 b>arc Db>cma A) a>b>e . Which of the following compounds will sho® the maximum ‘enol’ content ? [JEE MAIN 2019, 8% April Shift) 1) CH,COCH, 2) CH,COCH,COCH: 9) CH,COCH,COOC,H, 4) CH,COCH,CONHs Keto-enol tautomerism is observed in } The enolic form of acetone contains us is ° 1) 9 sigma bonds, 1 pi bond and 210 ne y : Bia ie 2) 8 sigma bonds, 2 pi bonds and 210 , 9) 10 sigma bonds, 1 pi bond and I 4) 9 sigma bonds, 2 pi bonds and 1 D op, - y C--Ob,