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- 1. Multiple Choice
Which statement is FALSE ?Electrophile is an electron deficient speciesdonate a lone pairPositively charged speciesAttack an electron rich region - 2. Multiple ChoiceReaction mechanism shown below isSubstitution reactionNucleophilic substitutionAddition reactionBromination reaction
- 3. Multiple ChoiceAddition reaction happens for alkene becausestable C=C double bondsunstable weak π bondsstable C-C bondsunstable sigma bond
- 4. Multiple ChoiceDiagram shows the formation of1° carbocation2° carbocation3° carbocationNone of the above
- 5. Multiple ChoiceDiagram shows the formation of1° carbocation2° carbocation3° carbocationNone of the above
- 6. Multiple ChoiceWhich carbocation is most stable and why?1°carbocation because of strong inductive effect1°carbocation because of weak inductive effect3°carbocation because of weak inductive effect3°carbocation because of strong inductive effect
- 7. Multiple ChoiceBased on Markovnikov's rule which is the major product shown in diagram.ABBothNone of the above
- 8. Multiple ChoiceBased on Markovnikov's rule, A is the major product becausegreater positive inductive effect due to 1° carbocation formgreater positive inductive effect due to 2° carbocation formgreater positive inductive effect due to 3° carbocation formNone of the above
- 9. Multiple ChoiceBased on Markovnikov's rule, A is the major product becausegreater positive inductive effect due to 1° carbocation formgreater positive inductive effect due to 2° carbocation formgreater positive inductive effect due to 3° carbocation formNone of the above
- 10. Multiple ChoiceBased on Markovnikov's rule, which is the major productABBothNone of the above
- 11. Multiple ChoiceBased on Markovnikov's rule, A is the major product becausegreater positive inductive effect due to 1° carbocation formgreater positive inductive effect due to 2° carbocation formgreater positive inductive effect due to 3° carbocation formNone of the above
- 12. Multiple ChoiceReaction between Benzene + Br2 is calledElectrophilic additionElectrophilic substitutionNucleophilic additionNucleophilic substitution
- 13. Multiple ChoiceBenzene undergo electrophilic substitution NOT addition becauseStability of benzene ringStability due to delocalization of π electron in benzeneDelocalization of π electron in benzeneBenzene is unreactive
- 14. Multiple ChoiceBenzene undergo nitration reaction. What are the reagents needed?Concentrated nitric acidConcentrated nitric and sulfuric acid at room temperatureConcentrated nitric and sulfuric acid at 50CConcentrated nitric and sulfuric acid at high temperature
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