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Aldehydes Ketones and Carboxylic Acids

94 questions · Chemistry · NEET
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Aldehydes Ketones and Carboxylic Acids

94 questions · Chemistry · NEET

  1. Identify the suitable reagent for the following conversion. Includes diagram2025 · Q91 · MCQ
  2. The correct order of decreasing acidity of the following aliphatic acids is2025 · Q92 · MCQ
  3. Identify the correct reagents that would bring about the following transformation. Includes diagram2024 · Q127 · MCQ
  4. Match List I with List II. Choose the correct answer from the options given below: Includes table Includes diagram2024 · Q134 · MCQ
  5. For the given reaction: 'P' is Includes diagram2024 · Q139 · MCQ
  6. Select the incorrect reaction among the following :2024 · Q117 · MCQ
  7. Reagents which can be used to convert alcohols to carboxylic acids, are (A) CrO3​−H2​SO4​ (B) K2​Cr2​O7​+H2​SO4​ (C) KMnO4​+KOH/H3​O+…2023 · Q107 · MCQ
  8. The major product formed in the following conversion is ___________. Includes diagram2023 · Q125 · MCQ
  9. Consider the given reaction: CH3​COCH3​⟶ dil Ba(OH)2​​ ”X"  The functional groups present in compound "X" are:2023 · Q92 · MCQ
  10. Identify 'X' in above reactions Includes diagram2023 · Q97 · MCQ
  11. The following conversion is known as: Includes diagram2023 · Q99 · MCQ
  12. Complete the following reaction: [C] is _______. Includes diagram2023 · Q111 · MCQ
  13. Identify the major product obtained in the following reaction: Includes diagram2023 · Q118 · MCQ
  14. Identify the final product [D] obtained in the following sequence of reactions. Includes diagram2023 · Q123 · MCQ
  15. Which of the following reactions is not an example for nucleophilic addition-elimination reaction?2022 · Q113 · MCQ
  16. The product formed from the following reaction sequence is Includes diagram2022 · Q114 · MCQ
  17. Match List-I with List-II : Choose the correct answer from the options given below : Includes table2022 · Q121 · MCQ
  18. The incorrect method to synthesize benzaldehyde is2022 · Q136 · MCQ
  19. RMgX + CO2 ether⟶dry​ Y H3​O+​ RCOOH What is Y in the above reaction?2022 · Q110 · MCQ
  20. Match List-I with List-II. Choose the correct answer from the options given below Includes table2022 · Q114 · MCQ
  21. Compound X on reaction with O3 followed by Zn/H2O gives formaldehyde and 2-methyl propanal as products. The compound X is2022 · Q123 · MCQ
  22. Which one of the following is not formed when acetone reacts with 2-pentanone in the presence of dilute NaOH followed by heating?2022 · Q125 · MCQ
  23. Given below are two statements : Statement I : The boiling points of aldehydes and ketones are higher than hydrocarbons of comparable molecular masses because of weak molecular association in aldehydes and ketones due to dipole - dipole…2022 · Q99 · MCQ
  24. What is the IUPAC name of the organic compound formed in the following chemical reaction? Includes diagram2021 · Q113 · MCQ
  25. Consider the above reaction and identify the missing reagent/chemical. Includes diagram2021 · Q115 · MCQ
  26. Match List-I with List-II Choose the correct answer from the options given below. Includes diagram2021 · Q117 · MCQ
  27. The intermediate compound 'X' in the following chemical reaction is : Includes diagram2021 · Q118 · MCQ
  28. The product formed in the following chemical reaction is : Includes diagram2021 · Q119 · MCQ
  29. Identify compound X in the following sequence of reactions : Includes diagram2020 · Q111 · MCQ
  30. Reaction between benzaldehyde and acetophenone in presence of dilute NaOH is known as :2020 · Q112 · MCQ
  31. Reaction between acetone and methylmagnesium chloride followed by hydrolysis will give :2020 · Q117 · MCQ
  32. Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to their2018 · Q94 · MCQ
  33. Consider the reactions, Identify A, X, Y and Z. Includes diagram2017 · Q121 · MCQ
  34. Of the following, which is the product formed when cyclohexanone undergoes aldol condensation followed by heating?2017 · Q122 · MCQ
  35. Which of the following reagents would distinguish cis-cyclopenta-1-2-diol from the trans-isomer?2016 · Q114 · MCQ
  36. The correct statement regarding a carbonyl compound with a hydrogen atom on its alpha-carbon, is2016 · Q115 · MCQ
  37. The correct structure of the product 'A' formed in the reaction Includes diagram2016 · Q81 · MCQ
  38. The correct order of strengths of the carboxylic acids is Includes diagram2016 · Q82 · MCQ
  39. The oxidation of benzene by V2O5 in the presence of air produces2015 · Q75 · MCQ
  40. Reaction of a carbonyl compound with one of the following reagents involves nucleophilic addition followed by elimination of water. The reagent is2015 · Q76 · MCQ
  41. Which one of the following esters gets hydrolysed most easily under alkaline conditions?2015 · Q77 · MCQ
  42. Treatment of cyclopentanone with methyl lithium gives which of the following species ? Includes diagram2015 · Q103 · MCQ
  43. An organic compound 'X' having molecular formula C5H10O yields phenylhydrazone and gives negative response to the iodoform test and Tollens' test. It produces n-pentane on reduction. 'X' could be2015 · Q79 · MCQ
  44. Which one is most reactive towards nucleophilic addition reaction?2014 · Q85 · MCQ
  45. The order of stability of the following tautomeric compounds is Includes diagram2013 · Q118 · MCQ
  46. Reaction by which benzaldehyde cannot be prepared2013 · Q119 · MCQ
  47. Consider the following reaction The product A is Includes diagram2012 · Q71 · MCQ
  48. Which of the following compounds will give a yellow precipitate with iodine and alkali?2012 · Q72 · Multiple correct
  49. Consider the reaction : RCHO + NH2NH2 → RCH = N − NH2 What sort of reaction is it?2012 · Q73 · MCQ
  50. Predict the products in the given reaction. Includes diagram2012 · Q103 · MCQ
  51. The correct order of decreasing acid strength of trichloroacetic acid (A), trifluoroacetic acid (B), acetic acid (C) and formic acid (D) is2012 · Q129 · MCQ
  52. CH3CHO and C6H5CH2CHO can be distinguished chemically by2012 · Q130 · MCQ
  53. Acetone is treated with excess of ethanol in the presence of hydrochloric acid. The product obtained is2012 · Q96 · MCQ
  54. The order of reactivity of phenyl magnesium bromide (PhMgBr) with the following compounds: Includes diagram2011 · Q70 · MCQ
  55. An organic compound A on treatment with NH3 gives B, which on heating gives C. C when treated with Br2 in the presence of KOH produces ethyl amine. Compound A is2011 · Q71 · MCQ
  56. Match the compounds given in List-I with List-II and select the suitable option using the code given below. Includes table2011 · Q72 · MCQ
  57. Which one is a nucleophilic substitution reaction among the following ?2011 · Q122 · MCQ
  58. In a set of reactions m-bromobenzoic acid gave a product D. Identify the product D. Includes diagram2011 · Q88 · MCQ
  59. Clemmensen reduction of a ketone is carried out in the presence of which of the following?2011 · Q98 · MCQ
  60. Which one of the following compounds will be most readily dehydrated?2010 · Q58 · MCQ
  61. Which of the following reactions will not result in the formation of carbon-carbon bonds?2010 · Q98 · MCQ
  62. Among the given compounds, the most susceptible to nucleophilic attack at the carbonyl group is2010 · Q99 · MCQ
  63. Trichloroacetaldehyde, CCl3CHO reacts with chlorobenzene in presence of sulphuric acid and produces2009 · Q90 · MCQ
  64. Propionic acid with Br2/P yields a dibromo product. Its structure would be2009 · Q91 · MCQ
  65. A strong base can abstract an α-hydrogen from2008 · Q90 · MCQ
  66. The relative reactivities of acyl compounds towards nucleophilic substitution are in the order of2008 · Q91 · MCQ
  67. Acetophenone when reacted with a base, C2H5ONa, yields a stable compound which has the structure2008 · Q92 · MCQ
  68. Reduction of aldehydes and ketones into hydrocarbons using zinc amalgam and conc. HCl is called2007 · Q75 · MCQ
  69. The product formed in Aldol condensation is2007 · Q76 · MCQ
  70. Consider the following compounds The correct decreasing order of their reactivity towards hydrolysis is Includes diagram2007 · Q77 · MCQ
  71. Which of the following represents the correct order of the acidity in the given compounds ?2007 · Q78 · MCQ
  72. Which one of the following on treatment with 50% aqueous sodium hydroxide yields the corresponding alcohol and acid?2007 · Q79 · MCQ
  73. A carbonyl compound reacts with hydrogen cyanide to form cyanohydrin which on hydrolysis forms a racemic mixture of α-hydrixy acid. The carbonyl compound is2006 · Q127 · MCQ
  74. Nucleophilic addition reaction will be most favoured in2006 · Q128 · MCQ
  75. In a set of reactions propionic acid yielded a compound D. The structure of D would be Includes diagram2006 · Q88 · MCQ
  76. Self condensation of two moles of ethyl acetate in presence of sodium ethoxide yields2006 · Q97 · MCQ
  77. The major organic product formed from the following reaction : is Includes diagram2005 · Q126 · MCQ
  78. In a set of reactions acetic acid yielded a product D. The structure of D would be Includes diagram2005 · Q127 · MCQ
  79. The − OH group of an alcohol or the − COOH group of a carboxylic acid can be replaced by − Cl using2004 · Q112 · MCQ
  80. Which one of the following can be oxidised to the corresponding carbonyl compound?2004 · Q90 · MCQ
  81. In this reaction : CH3CHO + HCN → CH3CH(OH)CN HOH​ CH3CH(OH)COOH an asymmetric centre is generated. The acid obtained would be2003 · Q91 · MCQ
  82. A and B in the following reactions are : Includes diagram2003 · Q92 · MCQ
  83. When m-chlorobenzaldehyde is treated with 50% KOH solution, the product(s) obtained is (are)2003 · Q93 · MCQ
  84. In a set of the given reactions, acetic acid yielded a product C. Product C would be Includes diagram2003 · Q94 · MCQ
  85. In the above reaction product P is Includes diagram2002 · Q124 · MCQ
  86. In the following reaction product P is Includes diagram2002 · Q90 · MCQ
  87. are Includes diagram2002 · Q91 · MCQ
  88. Which of the following is incorrect?2001 · Q122 · MCQ
  89. Which of the following give positive Fehling solution test?2001 · Q88 · MCQ
  90. Which alkene on ozonolysis gives CH3CH2CHO and CH3COCH3?2001 · Q89 · MCQ
  91. First product of the reaction between RCHO and NH2NH2 is2000 · Q85 · MCQ
  92. Reduction by LiAlH4 of hydrolysed product of an ester gives2000 · Q86 · MCQ
  93. Benzoic acid may be converted into ethyl benzoate by reaction with :2000 · Q87 · MCQ
  94. Polarisation in acrolein can be described as2000 · Q88 · MCQ