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Alcohols Phenols and Ethers

170 questions · Chemistry · JEE Main
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Alcohols Phenols and Ethers

170 questions · Chemistry · JEE Main

  1. Benzene is treated with oleum to produce compound (X) which when further heated with molten sodium hydroxide followed by acidification produces compound (Y). The compound Y is treated with zinc metal to produce…2025 · 4 Apr · Shift 1 · Q8 · MCQ
  2. Given below are two statements : Statement I : Dimethyl ether is completely soluble in water. However, diethyl ether is soluble in water to a very small extent. Statement II : Sodium metal can be used to dry diethyl ether and not ethyl…2025 · 7 Apr · Shift 1 · Q11 · MCQ
  3. What amount of bromine will be required to convert 2 g of phenol into 2,4,6-tribromophenol? (Given molar mass in gmol−1 of C,H,O,Br are 12,1,16,80 respectively )2025 · 23 Jan · Shift 1 · Q3 · MCQ
  4. Given below are two statements : Statement (I) : The boiling points of alcohols and phenols increase with increase in the number of C -atoms. Statement (II) : The boiling points of alcohols and phenols are higher in comparison to other…2025 · 23 Jan · Shift 2 · Q6 · MCQ
  5. Given below are two statements : Statement I : Statement II : In , intramolecular substitution takes place first by involving lone pair of electrons on nitrogen. In the light of the above statements, choose the most appropriate answer from… Includes diagram2025 · 28 Jan · Shift 1 · Q17 · MCQ
  6. 0.1 mole of compound ‘S’ will weigh ​ g. (Given molar mass in g mol−1 C : 12, H : 1, O : 16) Includes diagram2025 · 29 Jan · Shift 1 · Q24 · Numerical
  7. Which one of the following, with HBr will give a phenol?2025 · 29 Jan · Shift 2 · Q10 · MCQ
  8. Match List - I with List - II. Choose the correct answer from the options given below : Includes table2024 · 1 Feb · Shift 2 · Q8 · MCQ
  9. Common name of Benzene - 1,2 - diol is -2024 · 4 Apr · Shift 2 · Q16 · MCQ
  10. For the Compounds : (A) H3​C−CH2​−O−CH2​−CH2​−CH3​(B) H3​C−CH2​−CH2​−CH2​−CH3​ (C) (D) The increasing order of… Includes diagram2024 · 5 Apr · Shift 1 · Q11 · MCQ
  11. Given below are two statement : Statements I : Bromination of phenol in solvent with low polarity such as CHCl3​ or CS2​ requires Lewis acid catalyst. Statements II : The Lewis acid catalyst polarises the bromine to…2024 · 5 Apr · Shift 1 · Q2 · MCQ
  12. Consider the given chemical reaction sequence : Total sum of oxygen atoms in Product A and Product B are ​. Includes diagram2024 · 5 Apr · Shift 1 · Q29 · Numerical
  13. Consider the above reaction sequence and identify the major product P. Includes diagram2024 · 5 Apr · Shift 2 · Q12 · MCQ
  14. Which one of the following reactions is NOT possible?2024 · 5 Apr · Shift 2 · Q14 · MCQ
  15. In Reimer - Tiemann reaction, phenol is converted into salicylaldehyde through an intermediate. The structure of intermediate is ​.2024 · 6 Apr · Shift 1 · Q16 · MCQ
  16. The major products formed : A and B respectively are : Includes diagram2024 · 6 Apr · Shift 2 · Q15 · MCQ
  17. Identify the major products A and B respectively in the following set of reactions. Includes diagram2024 · 8 Apr · Shift 1 · Q15 · MCQ
  18. Match List I with List II Choose the correct answer from the options given below : Includes diagram2024 · 8 Apr · Shift 2 · Q1 · MCQ
  19. Which one the following compounds will readily react with dilute NaOH ?2024 · 8 Apr · Shift 2 · Q5 · MCQ
  20. Given below are two statements : Statement (I) : p-nitrophenol is more acidic than m-nitrophenol and o-nitrophenol. Statement (II) : Ethanol will give immediate turbidity with Lucas reagent. In the light of the above statements, choose the…2024 · 27 Jan · Shift 1 · Q11 · MCQ
  21. The ascending order of acidity of −OH group in the following compounds is : Choose the correct answer from the options given below: Includes diagram2024 · 27 Jan · Shift 1 · Q12 · MCQ
  22. Match List - I with List - II. Choose the correct answer from the options given below : Includes table Includes diagram2024 · 27 Jan · Shift 2 · Q10 · MCQ
  23. Major product formed in the following reaction is a mixture of : Includes diagram2024 · 27 Jan · Shift 2 · Q3 · MCQ
  24. Phenolic group can be identified by a positive:2024 · 27 Jan · Shift 2 · Q9 · MCQ
  25. The major product(P) in the following reaction is Includes diagram2024 · 29 Jan · Shift 1 · Q3 · MCQ
  26. Phenol treated with chloroform in presence of sodium hydroxide, which further hydrolyzed in presence of an acid results2024 · 29 Jan · Shift 2 · Q17 · MCQ
  27. Match List I with List II Choose the correct answer from the options given below: Includes table2024 · 29 Jan · Shift 2 · Q18 · MCQ
  28. Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R: Assertion A: pKa​ value of phenol is 10.0 while that of ethanol is 15.9 . Reason R: Ethanol is stronger acid than…2024 · 31 Jan · Shift 1 · Q18 · MCQ
  29. Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R: Assertion A: Alcohols react both as nucleophiles and electrophiles. Reason R: Alcohols react with active metals such as sodium, potassium…2024 · 31 Jan · Shift 1 · Q8 · MCQ
  30. Identify the incorrect option from the following2023 · 1 Feb · Shift 1 · Q10 · MCQ
  31. Decreasing order of dehydration of the following alcohols is Includes diagram2023 · 1 Feb · Shift 1 · Q11 · MCQ
  32. The graph which represents the following reaction is : Includes diagram2023 · 1 Feb · Shift 2 · Q15 · MCQ
  33. The strongest acid from the following is2023 · 6 Apr · Shift 2 · Q12 · MCQ
  34. Among the following, the number of compounds which will give positive iodoform reaction is ​ (a) 1-Phenylbutan-2-one (b) 2-Methylbutan-2-ol (c) 3-Methylbutan-2-ol (d) 1-Phenylethanol (e) 3,3-dimethylbutan-2-one (f)…2023 · 6 Apr · Shift 2 · Q22 · Numerical
  35. Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Butan -1- ol has higher boiling point than ethoxyethane. Reason R: Extensive hydrogen bonding leads to stronger association…2023 · 8 Apr · Shift 1 · Q1 · MCQ
  36. The water gas on reacting with cobalt as a catalyst forms2023 · 8 Apr · Shift 1 · Q12 · MCQ
  37. Suitable reaction condition for preparation of Methyl phenyl ether is2023 · 10 Apr · Shift 1 · Q12 · MCQ
  38. The correct order for acidity of the following hydroxyl compound is : A. CH3​OH B. (CH3​)3​COH C. D. E. Choose the correct answer from the options given below: Includes diagram2023 · 10 Apr · Shift 2 · Q7 · MCQ
  39. Incorrect method of preparation for alcohols from the following is:2023 · 10 Apr · Shift 2 · Q8 · MCQ
  40. Arrange the following compounds in increasing order of rate of aromatic electrophilic substitution reaction Includes diagram2023 · 11 Apr · Shift 1 · Q15 · MCQ
  41. The number of hyperconjugation structures involved to stabilize carbocation formed in the above reaction is ​. Includes diagram2023 · 11 Apr · Shift 1 · Q20 · Numerical
  42. The ratio x/y on completion of the above reaction is ​. Includes diagram2023 · 11 Apr · Shift 1 · Q21 · Numerical
  43. Product [X] formed in the above reaction is : Includes diagram2023 · 11 Apr · Shift 2 · Q14 · MCQ
  44. Compound 'B' is Includes diagram2023 · 11 Apr · Shift 2 · Q3 · MCQ
  45. Correct statements for the given reaction are : A. Compound 'B' is aromatic B. The completion of above reaction is very slow C. 'A' shows tautomerism D. The bond lengths of C−C in compound B are found to be same Choose the… Includes diagram2023 · 12 Apr · Shift 1 · Q8 · MCQ
  46. 2-Methyl propyl bromide reacts with C2​H5​O− and gives 'A' whereas on reaction with C2​H5​OH it gives 'B'. The mechanism followed in these reactions and the products…2023 · 13 Apr · Shift 1 · Q8 · MCQ
  47. Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Order of acidic nature of the following compounds is A > B > C. Reason R : Fluoro is a stronger electron withdrawing… Includes diagram2023 · 13 Apr · Shift 2 · Q12 · MCQ
  48. The major product for the following reaction is: Includes diagram2023 · 13 Apr · Shift 2 · Q5 · MCQ
  49. 'A' formed in the above reaction is Includes diagram2023 · 15 Apr · Shift 1 · Q12 · MCQ
  50. 'A' and 'B' formed in the following set of reactions are : Includes diagram2023 · 24 Jan · Shift 1 · Q2 · MCQ
  51. Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R : Assertion A : Acetal / Ketal is stable in basic medium. Reason R : The high leaving tendency of alkoxide ion gives the stability to…2023 · 25 Jan · Shift 1 · Q11 · MCQ
  52. In the cumene to phenol preparation in presence of air, the intermediate is2023 · 25 Jan · Shift 1 · Q3 · MCQ
  53. Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R Assertion A : Butylated hydroxy anisole when added to butter increases its shelf life. Reason R : Butylated hydroxy anisole is more…2023 · 25 Jan · Shift 2 · Q12 · MCQ
  54. Find out the major product from the following reaction. Includes diagram2023 · 25 Jan · Shift 2 · Q5 · MCQ
  55. The increasing order of pKa​ for the following phenols is (A) 2, 4 - Dinitrophenol (B) 4 - Nitrophenol (C) 2, 4, 5 - Trimethylphenol (D) Phenol (E) 3-Chlorophenol Choose the correct answer from the option given below :2023 · 29 Jan · Shift 1 · Q9 · MCQ
  56. Find out the major product for the following reaction. Includes diagram2023 · 29 Jan · Shift 2 · Q14 · MCQ
  57. The denticity of the ligand present in the Fehling's reagent is ​.2023 · 29 Jan · Shift 2 · Q19 · Numerical
  58. A solution of CrO5​ in amyl alcohol has a ​ colour.2023 · 29 Jan · Shift 2 · Q4 · MCQ
  59. The correct order of pKa​ values for the following compounds is: Includes diagram2023 · 30 Jan · Shift 2 · Q12 · MCQ
  60. An organic compound 'A' with emperical formula C6​H6​O gives sooty flame on burning. Its reaction with bromine solution in low polarity solvent results in high yield of B. B is2023 · 31 Jan · Shift 1 · Q14 · MCQ
  61. Compound A,C5​H10​O5​, given a tetraacetate with Ac2​O and oxidation of A with Br2​−H2​O gives an acid, C5​H10​O6​…2023 · 31 Jan · Shift 2 · Q3 · MCQ
  62. Hex-4-ene-2-ol on treatment with PCC gives 'A'. 'A' on reaction with sodium hypoiodite gives 'B', which on further heating with soda lime gives 'C'. The compound 'C' is :2022 · 24 Jun · Shift 2 · Q12 · MCQ
  63. Given below are two statements : Statement I : On heating with KHSO4​, glycerol is dehydrated and acrolein is formed. Statement II : Acrolein has fruity odour and can be used to test glycerol's presence. Choose the correct…2022 · 25 Jul · Shift 1 · Q11 · MCQ
  64. Most stable product of the following reaction is: Includes diagram2022 · 25 Jul · Shift 1 · Q7 · MCQ
  65. The intermediate X, in the reaction : Includes diagram2022 · 25 Jun · Shift 1 · Q12 · MCQ
  66. In the following reaction : The compounds A and B respectively are : Includes diagram2022 · 25 Jun · Shift 1 · Q13 · MCQ
  67. In the given reaction 'A' can be Includes diagram2022 · 25 Jun · Shift 2 · Q12 · MCQ
  68. The major product formed in the following reaction, is Includes diagram2022 · 25 Jun · Shift 2 · Q14 · MCQ
  69. Which reactant will give the following alcohol on reaction with one mole of phenyl magnesium bromide (PhMgBr) followed by acidic hydrolysis? Includes diagram2022 · 26 Jul · Shift 1 · Q11 · MCQ
  70. The major product of the following reaction is Includes diagram2022 · 26 Jul · Shift 1 · Q12 · MCQ
  71. The difference in the reaction of phenol with bromine in chloroform and bromine in water medium is due to :2022 · 26 Jul · Shift 1 · Q8 · MCQ
  72. Hydrolysis of which compound will give carbolic acid?2022 · 26 Jul · Shift 2 · Q8 · MCQ
  73. Compound 'P' on nitration with dil. HNO3​ yields two isomers (A) and (B). These isomers can be separated by steam distillation. Isomers (A) and (B) show the intramolecular and intermolecular hydrogen bonding respectively. Compound (P) on…2022 · 26 Jun · Shift 1 · Q19 · Numerical
  74. Consider the above reaction sequence and identify the product B. Includes diagram2022 · 26 Jun · Shift 1 · Q8 · MCQ
  75. In the above reaction product B is : Includes diagram2022 · 27 Jul · Shift 1 · Q10 · MCQ
  76. In the following reaction The % yield for reaction I is 60% and that of reaction II is 50%. The overall yield of the complete reaction is ​%. [nearest integer] Includes diagram2022 · 27 Jul · Shift 1 · Q23 · Numerical
  77. Match List-I with List-II. Choose the correct answer from the options given below : Includes table Includes diagram2022 · 27 Jun · Shift 2 · Q11 · MCQ
  78. Identify the major products A and B for the below given reaction sequence. Includes diagram2022 · 28 Jul · Shift 1 · Q10 · MCQ
  79. Choose the correct option for the following reactions. Includes diagram2022 · 28 Jul · Shift 1 · Q8 · MCQ
  80. Compound I is heated with Conc. HI to give a hydroxy compound A which is further heated with Zn dust to give compound B. Identify A and B. Includes diagram2022 · 28 Jul · Shift 2 · Q9 · MCQ
  81. The major product (P) of the given reaction is (where, Me is − CH3​) Includes diagram2022 · 28 Jun · Shift 2 · Q8 · MCQ
  82. A compound 'X' is acidic and it is soluble in NaOH solution, but insoluble in NaHCO3​ solution. Compound 'X' also gives violet colour with neutral FeCl3​ solution. The compound 'X' is :2022 · 29 Jul · Shift 1 · Q15 · MCQ
  83. When ethanol is heated with conc. H2​SO4​, a gas is produced. The compound formed, when this gas is treated with cold dilute aqueous solution of Baeyer's reagent, is2022 · 29 Jul · Shift 2 · Q12 · MCQ
  84. Given below are two statements : Statement I : Phenols are weakly acidic. Statement II : Therefore they are freely soluble in NaOH solution and are weaker acids than alcohols and water. Choose the most appropriate option :2022 · 29 Jun · Shift 1 · Q10 · MCQ
  85. The number of chiral alcohol(s) with molecular formula C4​H10​O is ​.2022 · 29 Jun · Shift 2 · Q21 · Numerical
  86. In the given reaction, the number of sp2 hybridised carbon(s) in compound 'X' is ​. Includes diagram2022 · 29 Jun · Shift 2 · Q22 · Numerical
  87. Consider the above reaction sequence. Identify the component A and component B : Includes diagram2022 · 30 Jun · Shift 1 · Q12 · MCQ
  88. The structure of X is : Includes diagram2021 · 16 Mar · Shift 2 · Q2 · MCQ
  89. To synthesize 1.0 mole of 2-methylpropan-2-ol from Ethylethanoate ​ equivalents of CH3​MgBr Reagent will be required. (Integer value)2021 · 20 Jul · Shift 1 · Q18 · Numerical
  90. In the given reaction 3-Bromo-2, 2-dimethyl butane C2​H5​OH​(MajorProduct)′A′​ Product A is :2021 · 20 Jul · Shift 1 · Q7 · MCQ
  91. An organic compound A (C6​H6​O) gives dark green colouration with ferric chloride. On treatment with CHCl3​ and KOH, followed by acidification gives compound B. Compound B can also be obtained from compound C on reaction with…2021 · 22 Jul · Shift 2 · Q12 · MCQ
  92. Which of the following compounds will provide a tertiary alcohol or reaction with excess of CH3​MgBr followed by hydrolysis?2021 · 22 Jul · Shift 2 · Q3 · MCQ
  93. What is the final product (major) 'A' in the given reaction ? Includes diagram2021 · 24 Feb · Shift 1 · Q12 · MCQ
  94. Which of the following compound gives pink colour on reaction with phthalic anhydride in conc. H2​SO4​ followed by treatment with NaOH ?2021 · 24 Feb · Shift 1 · Q6 · MCQ
  95. What is 'X' in the given reaction? Includes diagram2021 · 25 Feb · Shift 2 · Q2 · MCQ
  96. Consider the above reaction, the major product 'P' is : Includes diagram2021 · 25 Jul · Shift 1 · Q2 · MCQ
  97. The correct options for the products A and B of the following reactions are : Includes diagram2021 · 26 Aug · Shift 1 · Q7 · MCQ
  98. Which one of the following phenols does not give colour when condensed with phthalic anhydride in presence of conc. H2​SO4​ ?2021 · 26 Aug · Shift 2 · Q1 · MCQ
  99. Identify the major products A and B respectively in the following reactions of phenol : Includes diagram2021 · 26 Feb · Shift 1 · Q10 · MCQ
  100. Given below are two statements : Statement I : o-Nitrophenol is steam volatile due to intramolecular hydrogen bonding. Statement II : o-Nitrophenol has high melting due to hydrogen bonding. In the light of the above statements, choose the…2021 · 26 Feb · Shift 1 · Q12 · MCQ
  101. B reacts with Hydroxyl amine but does not give Tollen's test. Identify A and B. Includes diagram2021 · 26 Feb · Shift 1 · Q13 · MCQ
  102. Ceric ammonium nitrate and CHCl3​/alc. KOH are used for the identification of functional groups present in ​ and ​ respectively.2021 · 26 Feb · Shift 2 · Q2 · MCQ
  103. Identify A in the given reaction. Includes diagram2021 · 26 Feb · Shift 2 · Q8 · MCQ
  104. In the following sequence of reactions, the final product D is : Includes diagram2021 · 27 Aug · Shift 1 · Q1 · MCQ
  105. Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Synthesis of ethyl phenyl ether may be achieved by Williamson synthesis. Reason (R) : Reaction of bromobenzene with…2021 · 27 Aug · Shift 1 · Q10 · MCQ
  106. The major product of the following reaction, if it occurs by SN2​ mechanism is : Includes diagram2021 · 27 Aug · Shift 2 · Q8 · MCQ
  107. Consider the above reaction and identify the Product P : Includes diagram2021 · 27 Jul · Shift 1 · Q9 · MCQ
  108. Consider the above reaction, the major product "P" formed is : Includes diagram2021 · 27 Jul · Shift 2 · Q1 · MCQ
  109. Consider the above reaction, and choose the correct statement : Includes diagram2021 · 27 Jul · Shift 2 · Q9 · MCQ
  110. The major product formed in the following reaction is : Includes diagram2021 · 31 Aug · Shift 1 · Q6 · MCQ
  111. Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Treatment of bromine water with propene yields 1-bromopropan-2-ol. Reason (R) : Attack of water on bromonium ion…2021 · 31 Aug · Shift 1 · Q7 · MCQ
  112. The major aromatic product C in the following reaction sequence will be : Includes diagram2020 · 2 Sep · Shift 1 · Q6 · MCQ
  113. The major product of the following reaction is : Includes diagram2020 · 2 Sep · Shift 2 · Q7 · MCQ
  114. An organic compound ‘A’ (C9​H10​O) when treated with conc. HI undergoes cleavage to yield compounds ‘B’ and ‘C’. ‘B’ gives yellow precipitate with AgNO3​ where as ‘C’ tautomerizes to ‘D’. ‘D’ gives positive iodoform test. ‘A’ could…2020 · 2 Sep · Shift 2 · Q9 · MCQ
  115. Consider the following reaction : The product 'P' gives positive ceric ammonium nitrate test. This is because of the presence of which of these –OH group(s)? Includes diagram2020 · 3 Sep · Shift 2 · Q2 · MCQ
  116. When neopentyl alcohol is heated with an acid, it slowly converted into an 85 : 15 mixture of alkenes A and B, respectively. What are these alkenes?2020 · 4 Sep · Shift 1 · Q16 · MCQ
  117. The major product [R] in the following sequence of reactions as : Includes diagram2020 · 4 Sep · Shift 2 · Q13 · MCQ
  118. The major product [B] in the following reactions is : Includes diagram2020 · 4 Sep · Shift 2 · Q16 · MCQ
  119. The major product of the following reaction is : Includes diagram2020 · 5 Sep · Shift 2 · Q11 · MCQ
  120. A solution of phenol in chloroform when treated with aqueous NaOH gives compound P as a major product. The mass percentage of carbon in P is ​. (to the nearest integer) (Atomic mass : C = 12; H = 1; O = 16)2020 · 6 Sep · Shift 2 · Q10 · Numerical
  121. The correct order of stability for the following alkoxides is : Includes diagram2020 · 7 Jan · Shift 2 · Q14 · MCQ
  122. The major product of the following reaction is : Includes diagram2020 · 8 Jan · Shift 1 · Q16 · MCQ
  123. Arrange the following compounds in increasing order of C–OH bond length : methanol, phenol, p-ethoxyphenol2020 · 8 Jan · Shift 1 · Q3 · MCQ
  124. Among the compounds A and B with molecular formula C9​H18​O3​ , A is having higher boiling point the B. The possible structures of A and B are :2020 · 8 Jan · Shift 2 · Q1 · MCQ
  125. The major product of the following reaction is : Includes diagram2019 · 8 Apr · Shift 1 · Q18 · MCQ
  126. The major product of the following reaction is : CH3​CH=CHCO2​CH3​LiAlH4​​2019 · 9 Apr · Shift 1 · Q2 · MCQ
  127. Aniline dissolved in dilute HCl is reacted with sodium nitrite at 0ºC. This solution was added dropwise to a solution containing equimolar mixture of aniline and phenol in dil. HCl. The structure of the major product is2019 · 9 Apr · Shift 1 · Q21 · MCQ
  128. The major product of the following reaction is : Includes diagram2019 · 9 Apr · Shift 1 · Q4 · MCQ
  129. The major product of the following reaction is : Includes diagram2019 · 10 Apr · Shift 1 · Q8 · MCQ
  130. The increasing order of the pKa values of the following compounds is : Includes diagram2019 · 10 Jan · Shift 1 · Q10 · MCQ
  131. The major product 'X' formed in the following reaction is : Includes diagram2019 · 10 Jan · Shift 1 · Q5 · MCQ
  132. The major product of the following reaction Includes diagram2019 · 10 Jan · Shift 2 · Q1 · MCQ
  133. The major product of the following reaction is : Includes diagram2019 · 11 Jan · Shift 1 · Q10 · MCQ
  134. The major product of the following reaction is Includes diagram2019 · 11 Jan · Shift 1 · Q12 · MCQ
  135. Which of the following compounds reacts with ethylmagnesium bromide and also decolourizes bromine water solution:2019 · 11 Jan · Shift 2 · Q4 · Multiple correct
  136. The major product of the following reaction is : Includes diagram2019 · 11 Jan · Shift 2 · Q5 · MCQ
  137. The major product of the following reaction is : Includes diagram2019 · 12 Apr · Shift 1 · Q22 · MCQ
  138. What will be the major product when m-cresol is reacted with propargyl bromide (HC ≡ C–CH2​Br) in presence of K2​CO3​ in acetone?2019 · 12 Apr · Shift 2 · Q19 · MCQ
  139. can not be prepared by - Includes diagram2019 · 12 Jan · Shift 1 · Q16 · MCQ
  140. The major product of the following reaction is : Includes diagram2018 · 15 Apr · Shift 1 · Q2 · MCQ
  141. The total number of optically active compounds formed in the following reactio is : Includes diagram2018 · 15 Apr · Shift 2 · Q3 · MCQ
  142. The major product formed in the following reaction is : Includes diagram2018 · Shift 0 · Q5 · MCQ
  143. Phenol reacts with methyl chloroformate in the presence of NaOH to form product A. A reacts with Br2​ to form product B. A and B are respectively :2018 · Shift 0 · Q6 · MCQ
  144. Phenol on treatment with CO2​ in the presence of NaOH followed by acidification produces compound X as the major product. X on treatment with (CH3​CO)2​O in the presence of catalytic amount of H2​SO4​ produces:2018 · Shift 0 · Q7 · MCQ
  145. The major product of the following reaction is : Includes diagram2017 · 8 Apr · Shift 1 · Q2 · MCQ
  146. The increasing order of the boiling points for the following compounds is : Includes diagram2017 · 9 Apr · Shift 1 · Q1 · MCQ
  147. Bouveault-Blanc reduction reaction involves :2016 · 9 Apr · Shift 1 · Q4 · MCQ
  148. The gas evolved on heating CH3​MgBr in methanol is :2016 · 9 Apr · Shift 1 · Q5 · MCQ
  149. The product of the reaction given below is : Includes diagram2016 · Shift 0 · Q10 · MCQ
  150. 2-chloro-2-methylpentane on reaction with sodium methoxide in methanol yields: Includes diagram2016 · Shift 0 · Q11 · MCQ
  151. The most suitable reagent for the conversion of R - CH2​ - OH → R - CHO is:2014 · Shift 0 · Q14 · MCQ
  152. An unknown alcohol is treated with the “Lucas reagent” to determine whether the alcohol is primary, secondary or tertiary. Which alcohol reacts fastest and by what mechanism:2013 · Shift 0 · Q10 · MCQ
  153. Arrange the following compounds in order of decreasing acidity : Includes diagram2013 · Shift 0 · Q5 · MCQ
  154. Ortho–Nitrophenol is less soluble in water than p– and m– Nitrophenols because :2012 · Shift 0 · Q20 · MCQ
  155. Phenol is heated with a solution of mixture of KBr and KBrO3​. The major product obtained in the above reaction is2011 · Shift 0 · Q16 · MCQ
  156. From amongst the following alcohols the one that would react fastest with conc. HCl and anhydrous ZnCl2​, is2010 · Shift 0 · Q14 · MCQ
  157. The major product obtained on interaction of phenol with sodium hydroxide and carbon dioxide is :2009 · Shift 0 · Q14 · MCQ
  158. Phenol, when it first reacts with concentrated sulphuric acid and then with concentrated nitric acid, gives2008 · Shift 0 · Q16 · MCQ
  159. In the following sequence of reactions, CH3​CH2​OH P+I2​​ A ether⟶Mg​ B HCHO​ C H2​O​ D the compound ‘D’ is2007 · Shift 0 · Q18 · MCQ
  160. Phenyl magnesium bromide reacts with methanol to give2006 · Shift 0 · Q12 · MCQ
  161. HBr reacts with CH2​=CH–OCH3​ under anhydrous conditions at room temperature to give2006 · Shift 0 · Q15 · MCQ
  162. The structure of the compound that gives a tribromo derivative on treatment with bromine water is2006 · Shift 0 · Q23 · MCQ
  163. The electrophile involved in the above reaction is Includes diagram2006 · Shift 0 · Q24 · MCQ
  164. Among the following the one that gives positives iodoform test upon reaction with I2​ and NaOH is2006 · Shift 0 · Q25 · MCQ
  165. Acid catalyzed hydration of alkenes except ethene leads to the formation of2005 · Shift 0 · Q16 · MCQ
  166. The best reagent to convert pent -3- en-2-ol into pent -3-en-2-one is2005 · Shift 0 · Q51 · MCQ
  167. Acetyl bromide reacts with excess of CH3​MgI followed by treatment with a saturated solution of NH4​Cl given2004 · Shift 0 · Q18 · MCQ
  168. Among the following compounds which can be dehydrated very easily is2004 · Shift 0 · Q27 · MCQ
  169. During dehydration of alcohols to alkenes by heating with conc. H2​SO4​ the initiation step is2003 · Shift 0 · Q16 · MCQ
  170. An ethar is more volatile than an alcohol having the same molecular formula. This is due to2003 · Shift 0 · Q62 · MCQ