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Basics of Organic Chemistry

41 questions · Chemistry · JEE Advanced
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Basics of Organic Chemistry

41 questions · Chemistry · JEE Advanced

  1. Match the reactions in List-I with the features of their products in List-II and choose the correct option. Includes table Includes diagram2023 · Shift 1 · Q16 · MCQ
  2. The maximum number of possible isomers (including stereoisomers) which may be formed on mono-bromination of 1-methylcyclohex-1-ene using Br2​ and UV light is ​.2021 · Shift 1 · Q17 · Numerical
  3. Among the following, the conformation that corresponds to the most stable conformation of meso-butane-2,3-diol is2021 · Shift 1 · Q2 · MCQ
  4. The amount of energy required to break a bond is same as the amount of energy released when the same bond is formed. In gaseous state, the energy required for homolytic cleavage of a bond is called Bond Dissociation Energy (BDE) or Bond… Includes table Includes diagram2021 · Shift 2 · Q13 · MCQ
  5. The amount of energy required to break a bond is same as the amount of energy released when the same bond is formed. In gaseous state, the energy required for homolytic cleavage of a bond is called Bond Dissociation Energy (BDE) or Bond… Includes diagram2021 · Shift 2 · Q14 · MCQ
  6. Newman projections P, Q, R and S are shown below : Which one of the following options represents identical molecules? Includes diagram2020 · Shift 1 · Q4 · MCQ
  7. Which of the following structures has the IUPAC name 3-ethynyl-2-hydroxy-4-methylhex-3-en-5-ynoic acid?2020 · Shift 1 · Q5 · MCQ
  8. The Fischer projection of D-erythrose is shown below : D-erythrose and its isomers are listed as P, Q, R, and S in Column - I. Choose the correct relationship of P, Q, R, and S with D-erythrose from Column - II. Includes diagram2020 · Shift 1 · Q6 · MCQ
  9. With respect to the compounds I-V, choose the correct statement(s). Includes diagram2020 · Shift 1 · Q8 · Multiple correct
  10. Consider the following four compounds, I, II, III, and IV. Choose the correct statement(s) Includes diagram2020 · Shift 2 · Q11 · Multiple correct
  11. Total number of isomers, considering both structural and stereoisomers of cyclic ethers with the molecular formula C4​H8​O is .................2019 · Shift 2 · Q14 · Numerical
  12. For the given compound X, the total number of optically active stereoisomers is ​. Includes diagram2018 · Shift 2 · Q9 · Numerical
  13. Among the following, the number of aromatic compound(s) is Includes diagram2017 · Shift 1 · Q10 · Numerical
  14. The correct statements(s) for the following addition reactions is (are) Includes diagram2017 · Shift 1 · Q11 · Multiple correct
  15. The IUPAC name(s) of the following compound is (are) Includes diagram2017 · Shift 1 · Q13 · Multiple correct
  16. For the following compounds, the correct statement(s) with respect to nucleophilic substitution reaction is (are) Includes diagram2017 · Shift 2 · Q8 · Multiple correct
  17. In the following mono-bromination reaction, the number of possible chiral product(s) is (are)... Includes diagram2016 · Shift 1 · Q10 · Numerical
  18. The total number of stereoisomers that can exist for M is ​. Includes diagram2015 · Shift 1 · Q9 · Numerical
  19. The correct combination of names for isomeric alcohols with molecular formula C4​H{}_{10}$O is/are2014 · Shift 1 · Q13 · Multiple correct
  20. The total number(s) of stable conformers with non-zero dipole moment for the following compound is(are) Includes diagram2014 · Shift 1 · Q18 · Numerical
  21. Isomers of hexane, based on their branching, can be divided into three distinct classes as shown in the figure. The correct order of their boiling point is Includes diagram2014 · Shift 2 · Q6 · MCQ
  22. The hyperconjugative stabilities of tert-butyl cation and 2-butene, respectively, are due to2013 · Shift 1 · Q5 · Multiple correct
  23. Which of the following molecules, in pure form, is(are) unstable at room temperature?2012 · Shift 1 · Q18 · Multiple correct
  24. When the following aldohexose exists in its D-configuration, the total number of stereoisomers in its pyranose form is ​. Includes diagram2012 · Shift 1 · Q20 · Numerical
  25. Which of the given statement(s) about N, O, P and Q with respect to M is(are) correct? Includes diagram2012 · Shift 2 · Q18 · Multiple correct
  26. Among the given options, the compound(s) in which all the atoms are in one plane in all the possible conformations (if any) is(are)2011 · Shift 1 · Q15 · Multiple correct
  27. Among the following compounds, the most acidic is2011 · Shift 1 · Q5 · MCQ
  28. The total number of contributing structure showing hyper-conjugation (involving C-H bonds) for the following carbocation is ​. Includes diagram2011 · Shift 2 · Q16 · Numerical
  29. In the Newman projection for 2,2-dimethylbutane, X and Y can, respectively, be Includes diagram2010 · Shift 1 · Q20 · Multiple correct
  30. The total number of cyclic isomers possible for a hydrocarbon with the molecular formula C4​H6​ is2010 · Shift 1 · Q7 · Numerical
  31. The correct statement(s) about the compound H3​C(HO)HC−CH=CH−CH(OH)CH3​  (X) is (are)2009 · Shift 1 · Q12 · Multiple correct
  32. The correct acidity order of the following is Includes diagram2009 · Shift 1 · Q7 · MCQ
  33. The IUPAC name of the following compound is Includes diagram2009 · Shift 1 · Q9 · MCQ
  34. The total number of cyclic structural as well as stereoisomers possible for a compound with the molecular formula C 5​ H 10​ is ​.2009 · Shift 2 · Q19 · Numerical
  35. In the following carbocation, H/CH3​ that is most likely to migrate to the positively charged carbon is : Includes diagram2009 · Shift 2 · Q3 · MCQ
  36. The correct stability order of the following resonance structures is Includes diagram2009 · Shift 2 · Q4 · MCQ
  37. Hyperconjugation involves overlapping of the following orbitals:2008 · Shift 1 · Q2 · MCQ
  38. The correct statement(s) concerning the structures E, F and G is(are) : Includes diagram2008 · Shift 1 · Q9 · Multiple correct
  39. The correct stability order for the following species is : Includes diagram2008 · Shift 2 · Q2 · MCQ
  40. The number of structural isomers for C 6​ H 14​ is :2007 · Shift 1 · Q6 · MCQ
  41. The number of stereoisomers obtained by bromination of trans-2-butene is :2007 · Shift 2 · Q7 · MCQ