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Basics of Organic Chemistry

270 questions · Chemistry · JEE Main
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Basics of Organic Chemistry

270 questions · Chemistry · JEE Main

  1. Consider the following compound (X) The most stable and least stable carbon radicals, respectively, produced by homolytic cleavage of corresponding C−H bond are : Includes diagram2025 · 2 Apr · Shift 1 · Q1 · MCQ
  2. Designate whether each of the following compounds is aromatic or not aromatic. Includes diagram2025 · 2 Apr · Shift 1 · Q5 · MCQ
  3. In 3,3-dimethylhex-1-en-4-yne, there are ​sp3, ​sp2 and ​ sp hybridised carbon atoms respectively.2025 · 2 Apr · Shift 2 · Q6 · MCQ
  4. Identify the correct statements from the following.  Choose the correct answer from the options given below:  Includes diagram2025 · 3 Apr · Shift 1 · Q12 · MCQ
  5.  The least acidic compound, among the following is:  Includes diagram2025 · 3 Apr · Shift 1 · Q13 · MCQ
  6. Given below are two statements : Statement I : Hyperconjugation is not a permanent effect. Statement II : In general, greater the number of alkyl groups attached to a positively charged Catom, greater is the hyperconjugation interaction…2025 · 3 Apr · Shift 2 · Q12 · MCQ
  7. The total number of structural isomers possible for the substituted benzene derivatives with the molecular formula C9​H12​ is ​.2025 · 3 Apr · Shift 2 · Q22 · Numerical
  8.  What is the correct IUPAC name of  ? Includes diagram2025 · 3 Apr · Shift 2 · Q3 · MCQ
  9. In which pairs, the first ion is more stable than the second? Includes diagram2025 · 4 Apr · Shift 2 · Q12 · MCQ
  10. The correct order of basicity for the following molecules is : Includes diagram2025 · 4 Apr · Shift 2 · Q14 · MCQ
  11. The IUPAC name of the following compound is: Includes diagram2025 · 4 Apr · Shift 2 · Q8 · MCQ
  12. Which of the following is the correct IUPAC name of given organic compound (X)? Includes diagram2025 · 7 Apr · Shift 1 · Q9 · MCQ
  13. The descending order of basicity of the following amines is : (D) CH3​NH2​(E) (CH3​)2​NH Choose the correct answer from the options given below : Includes diagram2025 · 7 Apr · Shift 2 · Q4 · MCQ
  14. The number of optically active products obtained from the complete ozonolysis of the given compound is : Includes diagram2025 · 7 Apr · Shift 2 · Q6 · MCQ
  15. Match the LIST-I with LIST-II Choose the correct answer from the options given below: Includes table2025 · 8 Apr · Shift 2 · Q3 · MCQ
  16. What is the correct IUPAC name of the compound? Includes diagram2025 · 8 Apr · Shift 2 · Q7 · MCQ
  17. The incorrect statements regarding geometrical isomerism are : (A) Propene shows geometrical isomerism. (B) Trans isomer has identical atoms/groups on the opposite sides of the double bond. (C) Cis-but-2-ene has higher dipole moment than…2025 · 22 Jan · Shift 1 · Q12 · MCQ
  18. The IUPAC name of the following compound is : Includes diagram2025 · 22 Jan · Shift 1 · Q19 · MCQ
  19. In Carius method for estimation of halogens, 180 mg of an organic compound produced 143.5 mg of AgCl . The percentage composition of chlorine in the compound is ​ %. (Given : molar mass in g mol−1…2025 · 22 Jan · Shift 1 · Q23 · Numerical
  20. How many different stereoisomers are possible for the given molecule? Includes diagram2025 · 22 Jan · Shift 1 · Q9 · MCQ
  21. The most stable carbocation from the following is :2025 · 22 Jan · Shift 2 · Q3 · MCQ
  22. The correct stability order of the following species/molecules is : Includes diagram2025 · 23 Jan · Shift 1 · Q10 · MCQ
  23. Which one of the carbocations from the following is most stable?2025 · 24 Jan · Shift 1 · Q7 · MCQ
  24. In the given structure, number of sp and sp2 hybridized carbon atoms present respectively are : Includes diagram2025 · 24 Jan · Shift 2 · Q12 · MCQ
  25. Identify correct statement/s : (A) −OCH3​ and −NHCOCH3​ are activating group. (B) −CN and -OH are meta directing group. (C) -CN and −SO3​H are meta directing group. (D) Activating…2025 · 24 Jan · Shift 2 · Q20 · MCQ
  26. The hydrocarbon (X) with molar mass 80 g mol−1 and 90% carbon has ​ degree of unsaturation.2025 · 24 Jan · Shift 2 · Q22 · Numerical
  27. The possible number of stereoisomers for 5-phenylpent-4-en-2-ol is ​.2025 · 24 Jan · Shift 2 · Q25 · Numerical
  28. The correct order of stability of following carbocations is : Includes diagram2025 · 28 Jan · Shift 1 · Q15 · MCQ
  29. Given below are two statements: Statement I: and are isomeric compounds. Statement II: and are functional group isomers. In the light of the above statements, choose the correct answer from the options given below: Includes diagram2025 · 28 Jan · Shift 2 · Q3 · MCQ
  30. Match List - I with List - II. Choose the correct answer from the options given below : Includes table Includes diagram2025 · 29 Jan · Shift 1 · Q17 · MCQ
  31. Total number of nucleophiles from the following is : Includes diagram2025 · 29 Jan · Shift 1 · Q18 · MCQ
  32. Given below are two statements : Statement (I): On nitration of m-xylene with HNO3​,H2​SO4​ followed by oxidation, 4-nitrobenzene-1,3-dicarboxylic acid is obtained as the major product. Statement (II) : −CH3​…2025 · 29 Jan · Shift 2 · Q1 · MCQ
  33. Given below are two statements : Statement (I): In partition chromatography, stationary phase is thin film of liquid present in the inert support. Statement (II): In paper chromatography, the material of paper acts as a stationary phase.…2025 · 29 Jan · Shift 2 · Q4 · MCQ
  34. Total number of deactivating groups in aromatic electrophilic substitution reaction among the following is ​ . Includes diagram2024 · 1 Feb · Shift 1 · Q22 · Numerical
  35. Number of optical isomers possible for 2-chlorobutane ​.2024 · 1 Feb · Shift 1 · Q29 · Numerical
  36. 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…2024 · 1 Feb · Shift 1 · Q8 · MCQ
  37. Which of the following compound will most easily be attacked by an electrophile?2024 · 1 Feb · Shift 1 · Q9 · MCQ
  38. Lassaigne's test is used for detection of :2024 · 1 Feb · Shift 2 · Q11 · MCQ
  39. The functional group that shows negative resonance effect is :2024 · 1 Feb · Shift 2 · Q14 · MCQ
  40. Total number of isomeric compounds (including stereoisomers) formed by monochlorination of 2-methylbutane is ​ .2024 · 1 Feb · Shift 2 · Q23 · Numerical
  41. The set of meta directing functional groups from the following sets is :2024 · 1 Feb · Shift 2 · Q4 · MCQ
  42. Which among the following is incorrect statement?2024 · 4 Apr · Shift 1 · Q14 · MCQ
  43. What will be the decreasing order of basic strength of the following conjugate bases? −OH,RO,CH3​COO,Cl2024 · 4 Apr · Shift 1 · Q2 · MCQ
  44. The number of different chain isomers for C 7​ H 16​ is ​.2024 · 4 Apr · Shift 1 · Q28 · Numerical
  45. Match List I with List II : Choose the correct answer from the options given below : Includes table Includes diagram2024 · 4 Apr · Shift 1 · Q4 · MCQ
  46. The total number of 'sigma' and 'pi' bonds in 2-oxohex-4-ynoic acid is ​.2024 · 4 Apr · Shift 2 · Q23 · Numerical
  47. Correct order of stability of carbanion is : Includes diagram2024 · 4 Apr · Shift 2 · Q5 · MCQ
  48. Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Cis form of alkene is found to be more polar than the trans form. Reason (R) : Dipole moment of trans isomer of…2024 · 5 Apr · Shift 1 · Q1 · MCQ
  49. Using the given figure, the ratio of Rf​ values of sample A and sample C is x×10−2. Value of x is ​. Includes diagram2024 · 5 Apr · Shift 2 · Q23 · Numerical
  50. The correct nomenclature for the following compound is : Includes diagram2024 · 5 Apr · Shift 2 · Q3 · MCQ
  51. Match List - I with List - II. Choose the correct answer from the options given below : Includes table2024 · 5 Apr · Shift 2 · Q5 · MCQ
  52. Which of the following is metamer of the given compound (X) ? Includes diagram2024 · 6 Apr · Shift 1 · Q15 · MCQ
  53. Functional group present in sulphonic acids is :2024 · 6 Apr · Shift 1 · Q7 · MCQ
  54. The incorrect statement regarding the geometrical isomers of 2-butene is :2024 · 6 Apr · Shift 2 · Q19 · MCQ
  55. The correct arrangement for decreasing order of electrophilic substitution for above compounds is : Includes diagram2024 · 6 Apr · Shift 2 · Q2 · MCQ
  56. Number of carbocations from the following that are not stabilized by hyperconjugation is ​. Includes diagram2024 · 6 Apr · Shift 2 · Q22 · Numerical
  57. Given below are two statements : In the light of the above statements, choose the most appropriate answer from the options given below: Includes diagram2024 · 8 Apr · Shift 1 · Q17 · MCQ
  58. The number of optical isomers in following compound is : ​. Includes diagram2024 · 8 Apr · Shift 1 · Q28 · Numerical
  59. Which of the following are aromatic? Includes diagram2024 · 8 Apr · Shift 1 · Q5 · MCQ
  60. The correct sequence of acidic strength of the following aliphatic acids in their decreasing order is: CH3​CH2​COOH,CH3​COOH,CH3​CH2​CH2​COOH,HCOOH…2024 · 8 Apr · Shift 2 · Q10 · MCQ
  61. IUPAC name of following hydrocarbon(X) is : Includes diagram2024 · 8 Apr · Shift 2 · Q17 · MCQ
  62. Total number of aromatic compounds among the following compounds is ​. Includes diagram2024 · 8 Apr · Shift 2 · Q22 · Numerical
  63. The number of optically active compounds from the following is ​. Includes diagram2024 · 8 Apr · Shift 2 · Q25 · Numerical
  64. Relative stability of the contributing structures is : Includes diagram2024 · 9 Apr · Shift 1 · Q11 · MCQ
  65. Correct order of basic strength of Pyrrole , Pyridine and Piperidine is : Includes diagram2024 · 9 Apr · Shift 1 · Q12 · MCQ
  66. For the given compounds, the correct order of increasing pKa​ value : Choose the correct answer from the options given below : Includes diagram2024 · 9 Apr · Shift 1 · Q13 · MCQ
  67. Methods used for purification of organic compounds are based on :2024 · 9 Apr · Shift 1 · Q16 · MCQ
  68. How many compounds among the following compounds show inductive, mesomeric as well as hyperconjugation effects? Includes diagram2024 · 9 Apr · Shift 1 · Q27 · Numerical
  69. The correct stability order of the following resonance structures of CH3​−CH=CH−CHO is Includes diagram2024 · 9 Apr · Shift 2 · Q2 · MCQ
  70. Total number of stereo isomers possible for the given structure : Includes diagram2024 · 9 Apr · Shift 2 · Q8 · MCQ
  71. Cyclohexene is ​ type of an organic compound. Includes diagram2024 · 27 Jan · Shift 1 · Q14 · MCQ
  72. IUPAC name of following compound (P) is: Includes diagram2024 · 27 Jan · Shift 1 · Q17 · MCQ
  73. 3-Methylhex-2-ene on reaction with HBr in presence of peroxide forms an addition product (A). The number of possible stereoisomers for 'A' is ​.2024 · 27 Jan · Shift 1 · Q25 · Numerical
  74. Among the given organic compounds, the total number of aromatic compounds is Includes diagram2024 · 27 Jan · Shift 1 · Q26 · Numerical
  75. Among the following, total number of meta directing functional groups is (Integer based) −OCH3​,−NO2​,−CN,−CH3​−NHCOCH3​,−COR,−OH,−COOH,−Cl2024 · 27 Jan · Shift 1 · Q27 · Numerical
  76. Which of the following is strongest Bronsted base?2024 · 27 Jan · Shift 1 · Q4 · MCQ
  77. Which of the following has highly acidic hydrogen?2024 · 27 Jan · Shift 1 · Q6 · MCQ
  78. The incorrect statement regarding conformations of ethane is :2024 · 27 Jan · Shift 2 · Q16 · MCQ
  79. Bond line formula of HOCH(CN) 2​ is :2024 · 27 Jan · Shift 2 · Q18 · MCQ
  80. The order of relative stability of the contributing structure is : Choose the correct answer from the options given below : Includes diagram2024 · 27 Jan · Shift 2 · Q2 · MCQ
  81. Total number of compounds with Chiral carbon atoms from following is ​. Includes diagram2024 · 27 Jan · Shift 2 · Q23 · Numerical
  82. The interaction between π bond and lone pair of electrons present on an adjacent atom is responsible for2024 · 29 Jan · Shift 1 · Q15 · MCQ
  83. Which one of the following will show geometrical isomerism?2024 · 29 Jan · Shift 2 · Q15 · MCQ
  84. According to IUPAC system, the compound is named as Includes diagram2024 · 29 Jan · Shift 2 · Q5 · MCQ
  85. The ascending acidity order of the following H atoms is Includes diagram2024 · 29 Jan · Shift 2 · Q9 · MCQ
  86. Which of the following molecule/species is most stable?2024 · 30 Jan · Shift 1 · Q7 · MCQ
  87. The correct stability order of carbocations is2024 · 30 Jan · Shift 2 · Q2 · MCQ
  88. Number of geometrical isomers possible for the given structure is/are ​. Includes diagram2024 · 30 Jan · Shift 2 · Q25 · Numerical
  89. Which among the following purification methods is based on the principle of "Solubility" in two different solvents?2024 · 30 Jan · Shift 2 · Q3 · MCQ
  90. IUPAC name of following compound is : Includes diagram2024 · 30 Jan · Shift 2 · Q4 · MCQ
  91. Given below are two statements: Statement I: IUPAC name of HO−CH2​−(CH2​)3​−CH2​−COCH3​ is 7-hydroxyheptan-2-one. Statement II: 2-oxoheptan-7-ol is the correct IUPAC name for…2024 · 31 Jan · Shift 1 · Q19 · MCQ
  92. A species having carbon with sextet of electrons and can act as electrophile is called2024 · 31 Jan · Shift 1 · Q5 · MCQ
  93. Number of isomeric products formed by monochlorination of 2-methylbutane in presence of sunlight is ​.2024 · 31 Jan · Shift 2 · Q23 · Numerical
  94. Identify structure of 2,3-dibromo-1-phenylpentane.2024 · 31 Jan · Shift 2 · Q7 · MCQ
  95. The correct order of reactivity in electrophilic substitution reaction of the following compounds is : Includes diagram2024 · 31 Jan · Shift 2 · Q9 · MCQ
  96. The total number of chiral compound/s from the following is ​. Includes diagram2023 · 1 Feb · Shift 1 · Q19 · Numerical
  97. Resonance in carbonate ion (CO3​2−) is Which of the following is true? Includes diagram2023 · 1 Feb · Shift 1 · Q6 · MCQ
  98. From the figure of column chromatography given below, identify incorrect statements. A. Compound 'c' is more polar than 'a' and 'b' B. Compound 'a' is least polar C. Compound 'b' comes out of the column before 'c' and after 'a'… Includes diagram2023 · 6 Apr · Shift 2 · Q14 · MCQ
  99. The descending order of acidity for the following carboxylic acid is- A. CH3​COOH B. F3​C−COOH C. ClCH2​−COOH D. FCH2​−COOH E. BrCH2​−COOH…2023 · 8 Apr · Shift 2 · Q12 · MCQ
  100. The correct IUPAC nomenclature for the following compound is: Includes diagram2023 · 8 Apr · Shift 2 · Q2 · MCQ
  101. Using column chromatography, mixture of two compounds 'A' and 'B' was separated. 'A' eluted first, this indicates 'B' has2023 · 10 Apr · Shift 1 · Q8 · MCQ
  102. The decreasing order of hydride affinity for following carbocations is: Choose the correct answer from the options given below: Includes diagram2023 · 10 Apr · Shift 2 · Q2 · MCQ
  103. Thin layer chromatography of a mixture shows the following observation: The correct order of elution in the silica gel column chromatography is Includes diagram2023 · 11 Apr · Shift 1 · Q9 · MCQ
  104. Three organic compounds A, B and C were allowed to run in thin layer chromatography using hexane and gave the following result (see figure). The Rf​ value of the most polar compound is ​… Includes diagram2023 · 12 Apr · Shift 1 · Q17 · Numerical
  105. Among the following compounds, the one which shows highest dipole moment is2023 · 13 Apr · Shift 1 · Q7 · MCQ
  106. Given below are two statements : Statement I : Tropolone is an aromatic compound and has 8π electrons. Statement II : π electrons of >C=O group in tropolone is involved in aromaticity. In the light of the…2023 · 13 Apr · Shift 2 · Q10 · MCQ
  107. Which of the following statement is correct for paper chromatography?2023 · 15 Apr · Shift 1 · Q5 · MCQ
  108. Which will undergo deprotonation most readily in the basic medium? Includes diagram2023 · 24 Jan · Shift 2 · Q12 · MCQ
  109. Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R Assertion A : Benzene is more stable than hypothetical cyclohexatriene Reason R : The delocalised π electron cloud is attracted more…2023 · 24 Jan · Shift 2 · Q4 · MCQ
  110. Which of the following conformations will be the most stable?2023 · 25 Jan · Shift 1 · Q10 · MCQ
  111. The correct order in aqueous medium of basic strength in case of methyl substituted amines is :2023 · 25 Jan · Shift 1 · Q12 · MCQ
  112. Following chromatogram was developed by adsorption of compound 'A' on a 6 cm TLC glass plate. Retardation factor of the compound 'A' is ​×10−1. Includes diagram2023 · 29 Jan · Shift 1 · Q12 · Numerical
  113. Match List I with List II: Includes table2023 · 30 Jan · Shift 2 · Q9 · MCQ
  114. Match items of column I and II Correct match is Includes table Includes diagram2023 · 31 Jan · Shift 1 · Q2 · MCQ
  115. Number of electrophilic centres in the given compound is ​. Includes diagram2022 · 24 Jun · Shift 1 · Q20 · Numerical
  116. Which of the following is an example of conjugated diketone?2022 · 24 Jun · Shift 1 · Q9 · MCQ
  117. Arrange the following carbocations in decreasing order of stability. Includes diagram2022 · 24 Jun · Shift 2 · Q9 · MCQ
  118. Arrange the following in decreasing acidic strength. Includes diagram2022 · 25 Jul · Shift 2 · Q10 · MCQ
  119. The separation of two coloured substances was done by paper chromatography. The distances travelled by solvent front, substance A and substance B from the base line are 3.25 cm, 2.08 cm and 1.05 cm, respectively. The ratio of Rf values of…2022 · 25 Jul · Shift 2 · Q21 · Numerical
  120. The total number of monobromo derivatives formed by the alkanes with molecular formula C5​H12​ is (excluding stereo isomers) ​.2022 · 25 Jul · Shift 2 · Q22 · Numerical
  121. The IUPAC name of ethylidene chloride is :2022 · 25 Jun · Shift 1 · Q10 · MCQ
  122. Phenol on reaction with dilute nitric acid, gives two products. Which method will be most efficient for large scale separation?2022 · 25 Jun · Shift 1 · Q7 · MCQ
  123. In the following structures, which on is having staggered conformation with maximum dihedral angle?2022 · 25 Jun · Shift 1 · Q8 · MCQ
  124. Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : A mixture contains benzoic acid and napthalene. The pure benzoic acid can be separated out by the use of benzene. Reason R…2022 · 25 Jun · Shift 2 · Q9 · MCQ
  125. Which technique among the following, is most appropriate in separation of a mixture of 100mg of p-nitrophenol and picric acid ?2022 · 26 Jul · Shift 1 · Q7 · MCQ
  126. Which of the following compounds is not aromatic?2022 · 26 Jul · Shift 1 · Q9 · MCQ
  127. Total number of isomers (including stereoisomers) obtained on monochlorination of methylcyclohexane is ​.2022 · 26 Jul · Shift 2 · Q18 · Numerical
  128. The correct decreasing order of priority of functional groups in naming an organic Question: compound as per IUPAC system of nomenclature is2022 · 26 Jul · Shift 2 · Q6 · MCQ
  129. Which of the following is not an example of benzenoid compound?2022 · 26 Jul · Shift 2 · Q7 · Multiple correct
  130. The correct order of nucleophilicity is2022 · 26 Jun · Shift 2 · Q7 · MCQ
  131. Optical activity of an enantiomeric mixture is +12.6∘ and the specific rotation of (+) isomer is +30∘. The optical purity is ​%.2022 · 27 Jul · Shift 1 · Q22 · Numerical
  132. Given below are two statements: one is labelled as Assertion A and, the other is labelled as Reason R. Assertion A: [6] Annulene, [8] Annulene and cis-[10] Annulene, are respectively aromatic, not-aromatic and aromatic. Reason R: Planarity… Includes diagram2022 · 27 Jul · Shift 1 · Q9 · MCQ
  133. Match List - I with List - II. Choose the correct answer from the options given below : Includes table2022 · 27 Jul · Shift 2 · Q13 · MCQ
  134. Total number of possible stereoisomers of dimethyl cyclopentane is ​.2022 · 27 Jun · Shift 1 · Q19 · Numerical
  135. Which of the following is most stable?2022 · 27 Jun · Shift 2 · Q8 · MCQ
  136. Match List - I with List - II. Choose the correct answer from the options given below : Includes table Includes diagram2022 · 28 Jul · Shift 1 · Q7 · MCQ
  137. Among the following marked proton of which compound shows lowest pKa​ value?2022 · 28 Jul · Shift 1 · Q9 · MCQ
  138. Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R Assertion A : Thin layer chromatography is an adsorption chromatography. Reason R : A thin layer of silica gel is spread over a glass…2022 · 28 Jul · Shift 2 · Q11 · MCQ
  139. Arrange the following in increasing order of reactivity towards nitration A. p-xylene B. bromobenzene C. mesitylene D. nitrobenzene E. benzene Choose the correct answer from the options given below2022 · 28 Jul · Shift 2 · Q8 · MCQ
  140. Which one of the following techniques is not used to spot components of a mixture separated on thin layer chromatographic plate?2022 · 28 Jun · Shift 1 · Q5 · MCQ
  141. Which of the following structure are aromatic in nature? Includes diagram2022 · 28 Jun · Shift 1 · Q6 · MCQ
  142. The correct IUPAC name of the following compound is : Includes diagram2022 · 28 Jun · Shift 2 · Q7 · MCQ
  143. Given below are two statements. Statement I : The compound is optically active. Statement II : is mirror image of above compound A. In the light of the above statement, choose the most appropriate answer from the options given below. Includes diagram2022 · 29 Jul · Shift 2 · Q11 · MCQ
  144. Observe structures of the following compounds The total number of structures/compounds which possess asymmetric carbon atoms is ​. Includes diagram2022 · 29 Jun · Shift 1 · Q18 · Numerical
  145. Which of the following carbocations is most stable?2022 · 29 Jun · Shift 2 · Q8 · MCQ
  146. Which one of the following compounds is aromatic in nature?2021 · 1 Sep · Shift 2 · Q6 · Multiple correct
  147. In chromotography technique, the purification of compound is independent of :2021 · 16 Mar · Shift 1 · Q6 · MCQ
  148. Among the following, the aromatic compounds are : Choose the correct answer from the following options : Includes diagram2021 · 16 Mar · Shift 1 · Q8 · MCQ
  149. Which of the following is an aromatic compound?2021 · 17 Mar · Shift 1 · Q10 · MCQ
  150. Given below are two statements : Statement I : Retardation factor (Rf) can be measured in meter/centimeter. Statement II : Rf value of a compound remains constant in all solvents. Choose the most appropriate answer from the options given…2021 · 17 Mar · Shift 1 · Q12 · MCQ
  151. Nitrogen can be estimated by Kjeldahl's method for which of the following compound?2021 · 17 Mar · Shift 2 · Q3 · MCQ
  152. Compound with molecular formula C3​H6​O can show :2021 · 18 Mar · Shift 1 · Q9 · MCQ
  153. In the following molecule, Hybridisation of Carbon a, b, and c respectively are : Includes diagram2021 · 18 Mar · Shift 2 · Q2 · MCQ
  154. Among the given species the Resonance stabilised carbocations are : Includes diagram2021 · 20 Jul · Shift 1 · Q6 · MCQ
  155. Which one of the following pairs of isomers is an example of metamerism?2021 · 20 Jul · Shift 2 · Q1 · MCQ
  156. When 0.15 g of an organic compound was analyzed using Carius method for estimation of bromine, 0.2397 g of AgBr was obtained. The percentage of bromine in the organic compound is ​. (Nearest integer) [Atomic mass :…2021 · 20 Jul · Shift 2 · Q21 · Numerical
  157. The number of acyclic structural isomers (including geometrical isomers) for pentene are ​2021 · 22 Jul · Shift 2 · Q17 · Numerical
  158. Which purification technique is used for high boiling organic liquid compound (decomposes near its boiling point)?2021 · 22 Jul · Shift 2 · Q2 · MCQ
  159. Which of the following compounds does not exhibit resonance?2021 · 22 Jul · Shift 2 · Q4 · MCQ
  160. Which of the following molecules does not show stereo isomerism?2021 · 22 Jul · Shift 2 · Q8 · MCQ
  161. Which one of the following compounds is non-aromatic?2021 · 24 Feb · Shift 2 · Q3 · MCQ
  162. Using the provided information in the following paper chromatogram : Fig : Paper chromatography for compounds A and B. the calculated Rf value of A ​× 10-1. Includes diagram2021 · 25 Feb · Shift 1 · Q15 · Numerical
  163. The correct order of acid character of the following compounds is : Includes diagram2021 · 25 Feb · Shift 2 · Q6 · MCQ
  164. Which one among the following resonating structures is not correct?2021 · 25 Jul · Shift 1 · Q11 · MCQ
  165. Which among the following is the strongest acid ?2021 · 25 Jul · Shift 2 · Q15 · MCQ
  166. The correct decreasing order of densities of the following compounds is : Includes diagram2021 · 25 Jul · Shift 2 · Q4 · MCQ
  167. The number of stereoisomers possible for 1, 2-dimethyl cyclopropane is :2021 · 26 Aug · Shift 2 · Q10 · MCQ
  168. Which one of the following compounds is not aromatic?2021 · 26 Aug · Shift 2 · Q9 · MCQ
  169. Given below are two statements : Statement I : A mixture of chloroform and aniline can be separated by simple distillation. Statement II : When separating aniline from a mixture of aniline and water by steam distillation aniline boils…2021 · 26 Feb · Shift 1 · Q5 · MCQ
  170. The compound/s which will show significant intermolecular H-bonding is/are : Includes diagram2021 · 27 Aug · Shift 2 · Q3 · MCQ
  171. Staggered and eclipsed conformers of ethane are :2021 · 27 Jul · Shift 1 · Q11 · MCQ
  172. The correct order of stability of given carbocation is : Includes diagram2021 · 27 Jul · Shift 1 · Q13 · MCQ
  173. The dihedral angle in staggered form of Newman projection of 1, 1, 1-Trichloro ethane is ​ degree. (Round off to the nearest integer)2021 · 27 Jul · Shift 2 · Q20 · Numerical
  174. Given below are two statements : Statement I : Hyperconjugation is a permanent effect. Statement II : Hyperconjugation in ethyl cation (CH3​−C+​H2​) involves the overlapping of Csp2​−H1s​…2021 · 27 Jul · Shift 2 · Q4 · MCQ
  175. Choose the correct name for compound given below : Includes diagram2021 · 31 Aug · Shift 1 · Q10 · MCQ
  176. 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…2021 · 31 Aug · Shift 1 · Q11 · MCQ
  177. Arrange the following conformational isomers of n-butane in order of their increasing potential energy : Includes diagram2021 · 31 Aug · Shift 2 · Q1 · MCQ
  178. The number of chiral carbons present in the molecule given below is ​ . Includes diagram2020 · 2 Sep · Shift 1 · Q3 · Numerical
  179. The IUPAC name for the following compound is Includes diagram2020 · 2 Sep · Shift 1 · Q9 · MCQ
  180. Glycerol is separated in soap industries by :2020 · 3 Sep · Shift 1 · Q16 · MCQ
  181. Which one of the following compounds possesses the most acidic hydrogen?2020 · 3 Sep · Shift 1 · Q3 · MCQ
  182. The IUPAC name of the following compound is : Includes diagram2020 · 4 Sep · Shift 1 · Q20 · MCQ
  183. Among the following compounds, geometrical isomerism is exhibited by :2020 · 5 Sep · Shift 2 · Q10 · Multiple correct
  184. The increasing order of boiling points of the following compounds is : Includes diagram2020 · 5 Sep · Shift 2 · Q6 · MCQ
  185. Which of the following compounds shows geometrical isomerism?2020 · 6 Sep · Shift 1 · Q11 · MCQ
  186. The IUPAC name of the following compound is : Includes diagram2020 · 6 Sep · Shift 2 · Q6 · MCQ
  187. The increasing order to Pkb for the following compounds will be : Includes diagram2020 · 7 Jan · Shift 1 · Q19 · MCQ
  188. A chromatography column, packed with silica gel as stationary phase, was used to separate a mixture of compounds consisting of (A) benzanilide (B) aniline and (C) acetophenone. When the column is eluted with a mixture of solvents, hexane :…2020 · 7 Jan · Shift 2 · Q7 · MCQ
  189. A flask contains a mixture of isohexane and 3-methylpentane. One of the liquids boils at 63oC while the other boils at 60oC What is the best way to separate the two liquids and which one will be distilled out first ?2020 · 8 Jan · Shift 1 · Q18 · MCQ
  190. Kjeldahl's method cannot be used to estimate nitrogen for which of the following compounds?2020 · 8 Jan · Shift 2 · Q5 · MCQ
  191. The increasing order of basicity for the following intermediates is (from weak to strong) Includes diagram2020 · 9 Jan · Shift 1 · Q8 · MCQ
  192. Which of the following has the shortest C−Cl bond?2020 · 9 Jan · Shift 2 · Q19 · MCQ
  193. The IUPAC name of the following compound is : Includes diagram2019 · 8 Apr · Shift 1 · Q7 · MCQ
  194. In the following compounds, the decreasing order of basic strength will be :2019 · 8 Apr · Shift 1 · Q8 · MCQ
  195. Which of the following compounds will show the maximum 'enol' content?2019 · 8 Apr · Shift 2 · Q7 · MCQ
  196. The increasing order of reactivity of the following compounds towards aromatic electrophilic substitution reaction is : Includes diagram2019 · 9 Apr · Shift 1 · Q3 · MCQ
  197. The correct IUPAC name of the following compound is : Includes diagram2019 · 9 Apr · Shift 1 · Q8 · MCQ
  198. The correct decreasing order for acid strength is :2019 · 9 Jan · Shift 1 · Q5 · MCQ
  199. Which amongst the following is the strongest acid ?2019 · 9 Jan · Shift 1 · Q7 · MCQ
  200. The increasing basicity order of the following compounds is : Includes diagram2019 · 9 Jan · Shift 2 · Q1 · MCQ