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Aldehydes Ketones and Carboxylic Acids

73 questions · Chemistry · JEE Advanced
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Aldehydes Ketones and Carboxylic Acids

73 questions · Chemistry · JEE Advanced

  1. Monocyclic compounds P,Q,R and S are the major products formed in the reaction sequences given below. The product having the highest number of unsaturated carbon atom(s) is : Includes diagram2025 · Shift 2 · Q3 · MCQ
  2. Complete reaction of acetaldehyde with excess formaldehyde, upon heating with conc. NaOH solution, gives P and Q. Compound P does not give Tollens' test, whereas Q on acidification…2024 · Shift 1 · Q10 · Numerical
  3. List-I contains various reaction sequences and List-II contains the possible products. Match each entry in List-I with the appropriate entry in List-II and choose the correct option. Includes table Includes diagram2024 · Shift 1 · Q16 · MCQ
  4. An organic compound P having molecular formula C6​H6​O3​ gives ferric chloride test and does not have intramolecular hydrogen bond. The compound P reacts with 3 equivalents of NH2​OH…2024 · Shift 2 · Q13 · Numerical
  5. An organic compound P with molecular formula C9​H18​O2​ decolorizes bromine water and also shows positive iodoform test. P on ozonolysis followed by treatment with H2​O2​…2024 · Shift 2 · Q14 · Numerical
  6. An organic compound P with molecular formula C9​H18​O2​ decolorizes bromine water and also shows positive iodoform test. P on ozonolysis followed by treatment with H2​O2​…2024 · Shift 2 · Q15 · Numerical
  7. In the following reaction sequence, the major product Q is Includes diagram2024 · Shift 2 · Q3 · MCQ
  8. The major products obtained from the reactions in List-II are the reactants for the named reactions mentioned in List-I. Match List-I with List-II and choose the correct option. Includes table2023 · Shift 1 · Q17 · MCQ
  9. In the following reactions, P,Q,R, and S are the major products. The correct statement(s) about P,Q,R, and S is(are) : Includes diagram2023 · Shift 1 · Q2 · Multiple correct
  10. In the following reactions, P,Q,R, and S are the major products. The correct statement(s) about P,Q,R, and S is(are) : Includes diagram2023 · Shift 2 · Q7 · Multiple correct
  11. Considering the reaction sequence given below, the correct statement(s) is(are) Includes diagram2022 · Shift 1 · Q13 · Multiple correct
  12. In the reaction given below, the total number of atoms having sp2 hybridization in the major product P is ​. Includes diagram2021 · Shift 1 · Q18 · Numerical
  13. In the following reaction, compound Q is obtained from compound P via an ionic intermediate What is the degree of unsaturation of Q? Includes diagram2020 · Shift 1 · Q18 · Numerical
  14. In the reaction scheme shown below Q, R and S are the major products. The correct structure of Includes diagram2020 · Shift 1 · Q9 · Multiple correct
  15. The correct order of acid strength of the following carboxylic acids is Includes diagram2019 · Shift 1 · Q1 · MCQ
  16. Choose the correct option(s) for the following reaction sequence Consider Q, R and S as major products. Includes diagram2019 · Shift 2 · Q1 · Multiple correct
  17. List-I includes starting materials and reagents of selected chemical reactions. List-II gives structures of compounds that may be formed as intermediate products and/or final products from the reactions of List-I. Which of the following… Includes diagram2019 · Shift 2 · Q17 · MCQ
  18. List-I includes starting materials and reagents of selected chemical reactions. List-II gives structures of compounds that may be formed as intermediate products and/or final products from the reactions of List-I. Which of the following… Includes diagram2019 · Shift 2 · Q18 · MCQ
  19. The reaction (s) leading to the formation of 1,3,5-trimethylbenzene is (are)2018 · Shift 1 · Q12 · Multiple correct
  20. An organic acid P (C11​H12​O2​) can easily be oxidized to a dibasic acid which reacts with ethylene glycol to produce a polymer dacron. Upon ozonolysis, P gives an aliphatic ketone as one of the products. P… Includes diagram2018 · Shift 1 · Q16 · MCQ
  21. An organic acid P (C11​H12​O2​) can easily be oxidized to a dibasic acid which reacts with ethylene glycol to produce a polymer dacron. Upon ozonolysis, P gives an aliphatic ketone as one of the products. P… Includes diagram2018 · Shift 1 · Q17 · MCQ
  22. Treatment of benzene with CO/HCl in the presence of anhydrous AlCl3​/CuCl followed by reaction with Ac2​O/NaOAc gives compound X as the major product. Compound X upon reaction with Br2​/Na2​CO3​, followed by heating…2018 · Shift 1 · Q18 · MCQ
  23. Treatment of benzene with CO/HCl in the presence of anhydrous AlCl3​/CuCl followed by reaction with Ac2​O/NaOAc gives compound X as the major product. Compound X upon reaction with Br2​/Na2​CO3​, followed by heating…2018 · Shift 1 · Q2 · MCQ
  24. In the following reaction sequence, the amount of D(in g) formed from 10 moles of acetophenone is ​. (Atomic weights in gmol−1:H=1,C=12,N=14,O=16,Br=80.. The yield (%) corresponding to the… Includes diagram2018 · Shift 2 · Q10 · Numerical
  25. The desired product X can be prepared by reacting the major product of the reactions in LIST-I with one or more appropriate reagents in LIST-II (given, order of migratory aptitude: aryl > alkyl > hydrogen) The correct option is Includes diagram2018 · Shift 2 · Q16 · MCQ
  26. Columns 1, 2 and 3 contain starting materials, reaction conditions, and type of reactions, respectively. The only CORRECT combination in which the reaction proceeds through radical mechanism is : Includes table2017 · Shift 1 · Q14 · MCQ
  27. Columns 1, 2 and 3 contain starting materials, reaction conditions, and type of reactions, respectively. The only CORRECT combination that gives two different carboxylic acids is : Includes table2017 · Shift 1 · Q15 · MCQ
  28. Columns 1, 2 and 3 contain starting materials, reaction conditions, and type of reactions, respectively. For the synthesis of benzoic acid, the only CORRECT combination is Includes table2017 · Shift 1 · Q2 · MCQ
  29. The reaction of compound P with CH3​MgBr(excess) in (C2​H5​)2​O followed by addition of H2​O gives Q. The compound Q on treatment with H2​SO4​ at 0∘C gives R. The reaction of R… Includes diagram2017 · Shift 2 · Q18 · MCQ
  30. The reaction of compound P with CH3​MgBr(excess) in (C2​H5​)2​O followed by addition of H2​O gives Q. The compound Q on treatment with H2​SO4​ at 0∘C gives R. The reaction of R… Includes diagram2017 · Shift 2 · Q3 · MCQ
  31. Compounds P and R upon ozonolysis produce Q and S, respectively. The molecular formula of Q and S is C8​H8​O.Q undergoes Canninzzaro reaction but not haloform reaction, whereas S undergoes haloform reaction but not… Includes diagram2017 · Shift 2 · Q5 · Multiple correct
  32. The correct statements about of the following reaction sequence is (are) Cumene (C9​H{}_{12})(ii)H3​O+⟶(i)O2​​P⟶CHCl3​/NaOH​…2016 · Shift 1 · Q18 · Multiple correct
  33. Positive Tollen’s test is observed for2016 · Shift 1 · Q9 · Multiple correct
  34. The major product of the following reaction sequence is: Includes diagram2016 · Shift 2 · Q10 · MCQ
  35. Reagent(s) which can be used to bring about the following transformation is(are) Includes diagram2016 · Shift 2 · Q15 · Multiple correct
  36. The correct order of acidity for the following compounds is Includes diagram2016 · Shift 2 · Q9 · MCQ
  37. The major product of the following reaction is Includes diagram2015 · Shift 1 · Q14 · Multiple correct
  38. In the following reactions Compound X is Includes diagram2015 · Shift 2 · Q19 · Multiple correct
  39. In the following reactions The major compound Y is Includes diagram2015 · Shift 2 · Q20 · Multiple correct
  40. Among the following the number of reactions that produces benzaldehyde is ​. Includes diagram2015 · Shift 2 · Q8 · Numerical
  41. Consider all possible isomeric ketones including stereoisomers of MW = 100. All these isomers are independently reacted with NaBH4​ (Note : stereoisomers are also reacted separately). The total number of ketones that give a racemic…2014 · Shift 1 · Q20 · Numerical
  42. Different possible thermal decomposition pathways for peroxyesters are shown below. Match each pathway from List I with an appropriate structure from List II and select the correct answer using the code given below the lists. Includes diagram2014 · Shift 2 · Q19 · MCQ
  43. The major product in the following reaction is Includes diagram2014 · Shift 2 · Q8 · MCQ
  44. The total number of carboxylic acid groups is the product P is ​. Includes diagram2013 · Shift 1 · Q18 · Numerical
  45. P and Q are isomers of dicarboxylic acid C4​H4​O4​. Both decolorise Br2​/H2​O. On heating, P forms the cyclic anhydride. Upon treatment with dilute alkaline KMnO4​, P as well as Q could produce one or more than one from S, T and U.… Includes diagram2013 · Shift 2 · Q13 · MCQ
  46. P and Q are isomers of dicarboxylic acid C4​H4​O4​. Both decolorise Br2​/H2​O. On heating, P forms the cyclic anhydride. Upon treatment with dilute alkaline KMnO4​, P as well as Q could produce one or more than one from S, T and U.… Includes diagram2013 · Shift 2 · Q14 · MCQ
  47. After completion of the reactions (I and II), the organic compound(s) in the reaction mixtures is(are) Includes diagram2013 · Shift 2 · Q9 · Multiple correct
  48. The number of aldol reactions that occur in the given transformation are Includes diagram2012 · Shift 1 · Q12 · MCQ
  49. The number of optically active products obtained from the complete ozonolysis of the given compound is ​. Includes diagram2012 · Shift 1 · Q14 · MCQ
  50. Identify the binary mixtures that can be separated into individual compounds, by differential extraction, as shown in the given scheme. Includes diagram2012 · Shift 1 · Q16 · Multiple correct
  51. The carboxyl functional group (− COOH) is present in2012 · Shift 1 · Q8 · MCQ
  52. In the following reaction sequence, the compound J is an intermediate. J(C9​H8​O2​) gives effervescence on treatment with NaHCO3​ and a positive Baeyer's test.The compound I is Includes diagram2012 · Shift 2 · Q11 · MCQ
  53. In the following reaction sequence, the compound J is an intermediate. J(C9​H8​O2​) gives effervescence on treatment with NaHCO3​ and a positive Baeyer's test.The compound K is Includes diagram2012 · Shift 2 · Q12 · MCQ
  54. With reference to the scheme given, which of the given statement(s) about T, U, V and W is(are) correct? Includes diagram2012 · Shift 2 · Q17 · Multiple correct
  55. The major product H of the given reaction sequence is CH3​−CH2​−CO−CH3​CN​GHeat⟶95%H2​SO4​​H2012 · Shift 2 · Q5 · MCQ
  56. The compound that undergoes decarboxylation most readily under mild condition is2012 · Shift 2 · Q9 · MCQ
  57. An acyclic hydrocarbon P, having molecular formula C6​H{}_{10}$, gave acetone as the only organic product through the following sequence of reactions, in which Q is an intermediate organic compound. The structure of compound P is Includes diagram2011 · Shift 1 · Q16 · MCQ
  58. An acyclic hydrocarbon P, having molecular formula C6H10​, gave acetone as the only organic product through the following sequence of reactions, in which Q is an intermediate organic compound. The structure of the compound Q is Includes diagram2011 · Shift 1 · Q17 · MCQ
  59. In the scheme given below, the total number of intra molecular aldol condensation products formed from Y is ​. Includes diagram2010 · Shift 1 · Q26 · Numerical
  60. Amongst the following, the total number of compounds soluble in aqueous NaOH is ​. Includes diagram2010 · Shift 1 · Q27 · Numerical
  61. Two aliphatic aldehydes P and Q react in the presence of aqueous K2​CO3​ to give compound R, which upon treatment with HCN provides compound S. On acidification and… Includes diagram2010 · Shift 2 · Q15 · MCQ
  62. Two aliphatic aldehydes P and Q react in the presence of aqueous K2​CO3​ to give compound R, which upon treatment with HCN provides compound S. On acidification and… Includes diagram2010 · Shift 2 · Q16 · MCQ
  63. Two aliphatic aldehydes P and Q react in the presence of aqueous K2​CO3​ to give compound R, which upon treatment with HCN provides compound S. On acidification and… Includes diagram2010 · Shift 2 · Q17 · MCQ
  64. A carbonyl compound P, which gives positive iodoform test, undergoes reaction with MeMgBr followed by dehydration to give an olefin Q. Ozonolysis of Q leads to a dicarbonyl compound R, which undergoes intramolecular aldol reaction to give… Includes diagram2009 · Shift 1 · Q16 · MCQ
  65. A carbonyl compound P, which gives positive iodoform test, undergoes reaction with MeMgBr followed by dehydration to give an olefin Q. Ozonolysis of Q leads to a dicarbonyl compound R, which undergoes intramolecular aldol reaction to… Includes diagram2009 · Shift 1 · Q17 · MCQ
  66. A carbonyl compound P, which gives positive iodoform test, undergoes reaction with MeMgBr followed by dehydration to give an olefin Q. Ozonolysis of Q leads to a dicarbonyl compound R, which undergoes intramolecular aldol reaction to… Includes diagram2009 · Shift 1 · Q18 · MCQ
  67. Match each of the compounds given in Column I with the reaction(s), that they can undergo, given in Column II. Includes table Includes diagram2009 · Shift 2 · Q11 · MCQ
  68. In the following reaction sequence, products I, J and L are formed. K represents a reagent. The structure of the product I is : Includes diagram2008 · Shift 1 · Q15 · MCQ
  69. In the following reaction sequence, products I, J and L are formed. K represents a reagent. The structure of compounds J and K, respectively, are: Includes diagram2008 · Shift 1 · Q16 · MCQ
  70. In the following reaction sequence, products I, J and L are formed. K represents a reagent. The structure of product L is : Includes diagram2008 · Shift 1 · Q17 · MCQ
  71. In the following reaction sequence, the correct structure of E, F and G are : Includes diagram2008 · Shift 2 · Q4 · MCQ
  72. Statement 1 : p-Hydroxybenzoic acid has a lower boiling point than o-hydroxybenzoic acid. Statement 2 : o-Hydroxybenzoic acid has intramolecular hydrogen bonding.2007 · Shift 1 · Q12 · MCQ
  73. Cyclohexene on ozonolysis followed by reaction with zinc dust and water gives compound E. Compound E on further treatment with aqueous KOH yields compound F. Compound F is :2007 · Shift 2 · Q6 · MCQ