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Hydrocarbons

66 questions · Chemistry · NEET
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Hydrocarbons

66 questions · Chemistry · NEET

  1. Which one of the following reactions does NOT give benzene as the product?2025 · Q103 · MCQ
  2. Which one of the following compounds does not decolourize bromine water?2025 · Q126 · MCQ
  3. Predict the major product ' P ' in the following sequence of reactions- Includes diagram2025 · Q127 · MCQ
  4. Given below are two statements: Statement I: Propene on treatment with diborane gives an addition product with the formula Statement II: Oxidation of with hydrogen peroxide in presence of NaOH gives propan-2ol. In the light of… Includes diagram2024 · Q103 · MCQ
  5. The alkane that can be oxidized to the corresponding alcohol by KMnO4​ as per the equation is, when : Includes diagram2024 · Q145 · MCQ
  6. Identify product (A) is the following reaction : Includes diagram2023 · Q89 · MCQ
  7. The decreasing order of boiling points of the following alkanes is : (a) heptane (b) butane (c) 2-methylbutane (d) 2-methylpropane (e) hexane Choose the correct answer from the options given below :2022 · Q111 · MCQ
  8. The products A and B in the following reaction sequence are : Includes diagram2022 · Q132 · MCQ
  9. The incorrect method for the synthesis of alkenes is2022 · Q133 · MCQ
  10. The correct structure of 2, 6-dimethyl-dec-4-ene is2021 · Q108 · MCQ
  11. As alkene on ozonolysis gives methanal as one of the product, Its structure is :2020 · Q114 · MCQ
  12. An alkene “A” on reaction with O3 and Zn + H2O gives propanone and ethanal in equimolar ratio. Addition of HCl to alkene “A” gives “B” as the major product. The structure of product “B” is :2019 · Q80 · MCQ
  13. The most suitable reagent for the following conversion, is : Includes diagram2019 · Q87 · MCQ
  14. Among the following, the reaction that proceeds through an electrophilic substitution, is :2019 · Q97 · MCQ
  15. Hydrocarbon (A) reacts with bromine by substitution to form an alkyl bromide which by Wurtz reaction is converted to gaseous hydrocarbon containing less than four carbon atoms. (A) is2018 · Q81 · MCQ
  16. Which one is the correct order of acidity?2017 · Q115 · MCQ
  17. Predict the correct intermediate and product in the following reaction : H3​C−C≡CHHgSO4​⟶H2​O,H2​SO4​​(A)Intermediate​→(B)Product​…2017 · Q116 · MCQ
  18. With respect to the conformers of ethane, which of the following statements is true?2017 · Q117 · MCQ
  19. For the following reactions : (A) CH3CH2CH2Br + KOH → CH3CH = CH2 + KBr + H2O Which of the following statements is correct? Includes diagram2016 · Q108 · MCQ
  20. Consider the nitration of benzene using mixed conc.H2SO4 and HNO3. If a large amount of KHSO4 is added to the mixture, the rate of nitration will be2016 · Q110 · MCQ
  21. The pair of electrons in the given carbanion, CH3C ≡ C−, is present in which of the following orbitals?2016 · Q111 · MCQ
  22. In the reaction X and Y are Includes diagram2016 · Q112 · MCQ
  23. Which of the following can be used as the halide component for Friedel-Crafts reaction?2016 · Q111 · MCQ
  24. In which of the following molecules, all atoms are coplanar?2016 · Q112 · MCQ
  25. In pyrrole the electron density is maximum on Includes diagram2016 · Q113 · MCQ
  26. In the given reaction, the product P is Includes diagram2016 · Q114 · MCQ
  27. Which of the following compounds shall not produce propene by reaction with HBr followed by elimination or direct only elimination reaction ?2016 · Q115 · MCQ
  28. The compound that will react most readily with gaseous bromine has the formula2016 · Q116 · MCQ
  29. Which of the following is not the product of dehydration of Includes diagram2015 · Q102 · MCQ
  30. 2,3-Dimethyl-2-butene can be prepared by heating which of the following compounds with a strong acid?2015 · Q103 · MCQ
  31. In the reaction with HCl, an alkene reacts in accordance with the Markovnikov's rule to give a product 1-chloro-1 methylcyclohexane. The possible alkene is2015 · Q104 · MCQ
  32. A single compound of the structure, is obtainable from ozonolysis of which of the following cyclic compounds? Includes diagram2015 · Q111 · MCQ
  33. Given : The enthalpy of hydrogenation of these compounds will be in the order as Includes diagram2015 · Q112 · MCQ
  34. What products are formed when the following compound is treated with Br2 in the presence of FeBr3? Includes diagram2014 · Q114 · MCQ
  35. Identify Z in the sequence of reactions : Includes diagram2014 · Q115 · MCQ
  36. Which of the following organic compounds has same hybridization as its combustion product (CO2)?2014 · Q116 · MCQ
  37. In the following reaction : Product 'P' will not give Includes diagram2013 · Q120 · MCQ
  38. Which of the following compounds will not undergo Friedal-Craft's reaction easily?2013 · Q116 · MCQ
  39. Which of the following reagents will be able to distinguish between 1-butyne and 2-butyne?2012 · Q76 · MCQ
  40. Among the following compounds the one that is most reactive towards electrophilic nitration is2012 · Q122 · MCQ
  41. In the following reaction The major product is Includes diagram2012 · Q124 · MCQ
  42. Liquid hydrocarbons can be converted to a mixture of gaseous hydrocarbons by2010 · Q131 · MCQ
  43. The reaction of toluene with Cl2 in presence of FeCl3 gives X and reaction in presence of light gives Y. Thus, X and Y are2010 · Q132 · MCQ
  44. In a set of reactions, ethylbenzene yielded a product D. D would be Includes diagram2010 · Q133 · MCQ
  45. Benzene reacts with CH3Cl in the presence of anhydrons AlCl3 to form2009 · Q122 · MCQ
  46. Which of the following compounds will exhibit cis-trans (geometrical) isomerism?2009 · Q123 · MCQ
  47. The state of hybridisation of C2, C3, C5 and C6 of the hydrocarbon, is in the following sequence Includes diagram2009 · Q124 · MCQ
  48. A (predominantly) is Includes diagram2008 · Q122 · MCQ
  49. In the hydrocarbon, The state of hybridization of carbons 1, 3 and 5 are in the following sequence Includes diagram2008 · Q123 · MCQ
  50. Predict the product C obtained in the following reaction of 1-butyne. Includes diagram2007 · Q106 · MCQ
  51. Which of the compound with molecular formula C5H10 yields acetone on ozonolysis?2007 · Q107 · MCQ
  52. Products of the following reaction : Includes diagram2005 · Q122 · MCQ
  53. Which one of the following alkenes will react faster with H2 under catalytic hydrogenation conditions ?2005 · Q123 · MCQ
  54. Using anhydrous AlCl3 as catalyst, which one of the following reactions produces ethylbenzene (PhEt)?2004 · Q113 · MCQ
  55. Reaction of HBr with propene in the presence of peroxide gives2004 · Q114 · MCQ
  56. The compound on reaction with NaIO4 in the presence of KMnO4 gives Includes diagram2003 · Q124 · MCQ
  57. Which one of the following is a free-radical substitution reaction ?2003 · Q125 · MCQ
  58. The correct order of reactivity towards the electrophilic substitution of the compounds aniline (I), benzene (II) and nitrobenzene (III) is2003 · Q126 · MCQ
  59. When CH3CH2CHCl2 is treated with NaNH2, the product formed is2002 · Q125 · MCQ
  60. In preparation of alkene from alcohol using Al2O3 which is the effective factor ?2001 · Q125 · MCQ
  61. Which reagent converts propene to 1-propanol ?2000 · Q119 · MCQ
  62. Which is maximum stable?2000 · Q120 · MCQ
  63. In Friedel-Crafts reaction , toluene can be prepared by2000 · Q121 · MCQ
  64. Increasing order of electrophilic substitution for following compounds Includes diagram2000 · Q122 · MCQ
  65. Dihedral angle in staggered form of ethane is2000 · Q123 · MCQ
  66. 2-Butene shows geometrical isomerism due to2000 · Q93 · MCQ