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

2 / 50

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

4 / 50

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

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

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

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

9 / 50

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

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

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

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

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

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14. Unbranched isomer has higher _________ than branched isomer

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

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

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17. The dehydrohalogenation of alkyl halides yields __________

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18. The effect arising from the spatial interactions between the groups in a compound is called _____________

19 / 50

19. Down the group, electronegativity

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

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

 

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

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23. The types of geometric isomers are trans and __________

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24. The backbone of an organic molecule is __________

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25. The E2 reactions of alkyl halides are favoured by the use of __________

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26. Inductive effect is a type of ____________ effect

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

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28. Reduction of benzene is by __________ of benzene.

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

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

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

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

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33. Cyclohexane has _______ fewer hydrogens than nhexane.

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34. The parent compound of polynuclear hydrocarbons is ___________

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35. Another name for methyl benzene is __________

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36. 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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37. The method of reduction of the carbonyl group of ketone produced by Friedel -crafts acylation is ------------ reduction.

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

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39. Naphthalene has ________ number of resonance hybrid structures

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40. Oxidation of naphthalene under controlled condition yields ___________

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

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

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43. There are ---------- resonance structures of benzene

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

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45. Fused benzenoid hydrocarbons with two benzene rings is _________

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46. The cannonical forms of  benzene were proposed by _____________

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

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48. An example of Isolated Benzenoid Hydrocarbon is __________

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49. Sulphonation of benzene yields ___________

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

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