Basics of organic reaction mechanism
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Basics of organic reaction mechanism questions with answers

86 multiple-choice questions. Open any question for its answer and explanation.

  1. Oxymercuration-demercuration reaction of t-methylcyclohexene gives
  2. Identify the correct stereochemical relationship amongst the hydrogen atoms Ha, Hb and Hc in the following molecule
  3. Esterification of the acid P with the alcohol Q will give
  4. Proteins are biopolymers. The monomer units present in them are
  5. The acylanion equivalents among the following compounds (P-S) are
  6. Identify the correct set of stereochemical relationships amongst the following monosaccharides I-IV
  7. (E)-3-bromo-3-hexene when treated with CH3O- in CH3OH gives
  8. The configurations of the reactant and the product in the following reaction, are
  9. The absolute configurations of two chiral centres in the following molecule are
  10. Among formaldehyde, acetaldehyde and benzaldehyde, the aldehydes which undergo Cannizzaro's reaction are
  11. 1-hexyne upon treatment with disiamylborane followed by the oxidation with H2O2 gives
  12. The configurations at the three chiral centres in the bicyclodecanol given below, are
  13. For the aldotetroses I-IV, the combination of true statements, among P-T, is P = I and II are diastereomers and II and III are enantiomers Q = I and IV are mesomers and are optically inactive R = I and III can be interconverted by a base catalysed isomerisation S = only I and IV are HlO4 cleavable T = I and III are D-sugars and II and IV are L-sugars
  14. The correct order of-the basicity of the following compounds is
  15. Reaction of phenyl acetate with anhydrous aluminium chloride generates a mixture of
  16. Among the isomers of C4H6 given below, the compound which exhibits an absorption band at 3300 cm-1 in the IR spectrum, is
  17. Toluene when refluxed with Br2 in the presence of light mainly gives
  18. Match the compounds P-S with their carbonyl stretching frequencies (cm-1) I-VI in IR spectroscopy. P. Acetone I. 1870 Q. Ethyl acetate II. 1800 R. Acetamide III. 1740 S. Acetyl chloride IV. 1700 V. 1660 VI. 1600
  19. The decreasing order of acidity of the marked H of the following molecules is
  20. On heating with dilute sulphuric acid, naphthalene-1 sulphonic acid gives predominantly
  21. The amino acid side chain high affinity for Ca2+ and Cu2+ in metallo-proteins is
  22. The decreasing order of the reactivity of the following compounds towards electrophiles is
  23. Bridge-head hydrogen of the conformer of cis-decalin is positioned as [a = axial; e = equatorial]
  24. The compound is
  25. Among the following, the Newman projections of meso-2, 3-butanediol are