CHM203




Category: CHM203

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ATTENTION:

Kindly note that you will be presented with 50 questions randomized from the NOUN question bank. Make sure to take the quiz multiple times so you can get familiar with the questions and answers, as new questions are randomized in each attempt.

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CHM203

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1. An example of Isolated Benzenoid Hydrocarbon is __________

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2. Fused benzenoid hydrocarbon with three benzene rings is ________

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3. Hydrogen no - bond resonance is otherwise called _____________

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4. In electrophilic addition to alkenes, the electrophilic attack is on __________

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5. The rule that states that in a dehydrohalogenation reaction of alkyl halides, the major product will be the product that has the more alkyl groups attached to the resultant carbon - carbon double bond is __________ rule.

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6. Two factors that affect the boiling point of a substance are ________ and _________

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7. The dehydrohalogenation of alkyl halides yields __________

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8. For halogen derivatives of aromatic compounds, boiling point ---------- with increase in atomic size of the halogen atom.

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9. The method of reduction of the carbonyl group of ketone produced by Friedel - craft is __________

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10. Bleaching powder provides chlorine which oxidizes ethanol to _________.

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11. Unbranched isomer has higher _________ than branched isomer

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12. The definition of an acid as a proton donor was given by ________

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13. In keto-enol tautomers, the tautomer that predominates is __________

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14. Reduction of benzene is by __________ of benzene.

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15. The process by which benzene and its derivatives are extracted from petroleum is called ___________

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16. The influence of the inductive effect on acid strength is almost negligible after the __________ carbon in the chain.

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17. The benzenoid hydrocarbons in which two or more benzene rings are fused together at ortho position in such a way that each pair of rings shares rings shares two carbons are called ---------- benzenoid hydrocarbon.

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18. The types of geometric isomers are trans and __________

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19. Tautomers which differ from each other only in the location of a hydrogen atom and a double bond are called ____________

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20. The substitution of an acyl group into an aromatic ring by the reaction with an acid chloride in the presence of Lewis acid is called ____________

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21. The number or π-electrons in benzene is _____________

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22. The presence of an aromatic ring in a compound is detected by ____________

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23. In terms of steric effect _________ geometric isomer is more stable.

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24. Solubility of branched isomers is __________ than that of straight chain isomers

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25. Another name for methyl benzene is __________

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26. Hydrogenation of benzene at higher temperature and under pressure yields ________

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27. A benzenoid hydrocarbon in which two benzene rings are fused together at the ortho position is called ____________

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28. The reaction in which aryl halides are formed from aromatic amines is called _________

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29. The most widely used method for the preparation of alkyl halides is from __________

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30. Oxidation of naphthalene under controlled condition yields ___________

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31. Sulphonation of benzene yields ___________

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32. In terms of steric effect,  conformational isomer is __________ more stable.

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33. Naphthalene has ________ number of resonance hybrid structures

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34. Cyclohexane has _______ fewer hydrogens than nhexane.

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35. The parent compound of polynuclear hydrocarbons is ___________

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36. The stronger an acid the ___________ is its conjugate base

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37. The amount of substance dissolved in a certain amount of solvent is referred to as ___________

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38. In terms of steric effect _________ geometric isomer is more stable.

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39. The cannonical forms of  benzene were proposed by _____________

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40. A side reaction that occurs during substitution reactions of alkyl halides is _________

 

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41. Down the group, electronegativity

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42. Fused benzenoid hydrocarbons with two benzene rings is _________

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43. Branched chain hydrocarbons have lower __________ than their straight chain isomers.

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44. In terms of aromatization, naphthalene has ___________ π electrons

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45. A change in molecular structure which affect the reactivity of the molecule by changing the electron distribution is called __________

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46. The type of tautomerism which involves a shift in interatomic distance within a molecule, without the separation of any atom from the rest of the molecule , as an intermediate stage is called ____________

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47. The backbone of an organic molecule is __________

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48. The extent to which acids transfer a proton to a standard base determines __________

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49. The major product in the nitration of nitrobenzene is ____________

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50. Reduction of benzene using Nickel at 425-525K and 25atm yields __________

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