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Molecules add across multiple bonds in another molecule in addition reactions.

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Which of the following is an unsymmetrical reagent?


A) Cl2
B) H2O
C) H2O and HCl
D) HCl
E) I2

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What is the major product in the following transformation? What is the major product in the following transformation? A) B) C) D) E)


A) What is the major product in the following transformation? A) B) C) D) E)
B) What is the major product in the following transformation? A) B) C) D) E)
C) What is the major product in the following transformation? A) B) C) D) E)
D) What is the major product in the following transformation? A) B) C) D) E)
E) What is the major product in the following transformation? A) B) C) D) E)

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Which of the following steps are a part of chain reaction during alkane substitution? I.propagation II.initiation III.competition IV.dehalogenation V.termination


A) I,II and V
B) I,III and V
C) II,III and V
D) I,IIand IV
E) III,IV and V

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Suggest possible compounds for A,B and C in the following scheme: Suggest possible compounds for A,B and C in the following scheme: A) A is Cl<sub>2</sub>,B is AlCl<sub>3 </sub>and C is meta chloronitrobenzene B) A is Cl<sub>2</sub>,B is FeCl<sub>3 </sub>and C is ortho chloronitrobenzene C) A is Cl<sub>2</sub>,B is FeBr<sub>3 </sub>and C is meta chloronitrobenzene D) A is HCl,B is AlCl<sub>3 </sub>and C is para chloronitrobenzene E) A is Cl<sub>2</sub>,B is AlBr<sub>3 </sub>and C is meta chloronitrobenzene


A) A is Cl2,B is AlCl3 and C is meta chloronitrobenzene
B) A is Cl2,B is FeCl3 and C is ortho chloronitrobenzene
C) A is Cl2,B is FeBr3 and C is meta chloronitrobenzene
D) A is HCl,B is AlCl3 and C is para chloronitrobenzene
E) A is Cl2,B is AlBr3 and C is meta chloronitrobenzene

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Which of the following statements correctly describe SN2 and SN1 reactions? I.SN2 reactions proceed with retention of configuration. II.SN1 reactions prefer polar protic solvents. III.SN1 reactions can produce racemic products. IV.SN2 reactions are promoted in the presence of a substrate that produces a very stable carbocation. V.SN1 reactions have a unimolecular rate-determining step.


A) I,IIand V.
B) II,III,and IV.
C) III,IV and V.
D) II,IIIand V.
E) I,III,and IV.

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Markovnikof's rule predicts that when HBr is added to an unsymmetrical alkene or alkyne,the H atom will add to which carbon atom?


A) the carbon with the fewest attached hydrogens
B) the carbon with the Br
C) the carbon with the most attached hydrogens
D) the carbon next to the double or triple bond
E) HBr does not react with unsymmetrical alkenes or alkynes

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What is the major product in the reaction between 2-bromo-3-methylbutane and KOtBu in ethanol?


A) What is the major product in the reaction between 2-bromo-3-methylbutane and KO<sup>t</sup>Bu in ethanol? A) B) C) D) E)
B) What is the major product in the reaction between 2-bromo-3-methylbutane and KO<sup>t</sup>Bu in ethanol? A) B) C) D) E)
C) What is the major product in the reaction between 2-bromo-3-methylbutane and KO<sup>t</sup>Bu in ethanol? A) B) C) D) E)
D) What is the major product in the reaction between 2-bromo-3-methylbutane and KO<sup>t</sup>Bu in ethanol? A) B) C) D) E)
E) What is the major product in the reaction between 2-bromo-3-methylbutane and KO<sup>t</sup>Bu in ethanol? A) B) C) D) E)

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What alkene(s) would be produced in the following reaction? What alkene(s) would be produced in the following reaction? A) 3-methyl-2-pentene B) 2-methyl-2-butene C) 3-methylbutene D) pentene and 1-methylpentene E) 2-methyl-2-butene and 3-methylbutene


A) 3-methyl-2-pentene
B) 2-methyl-2-butene
C) 3-methylbutene
D) pentene and 1-methylpentene
E) 2-methyl-2-butene and 3-methylbutene

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A hydrocarbon has a molecular weight 56 g/mol and contains 85.7% carbon.It easily adds one mol of HBr to produce a chiral alkyl bromide.Which of the following structures could be the hydrocarbon?


A) A hydrocarbon has a molecular weight 56 g/mol and contains 85.7% carbon.It easily adds one mol of HBr to produce a chiral alkyl bromide.Which of the following structures could be the hydrocarbon? A) B) C) D) E)
B) A hydrocarbon has a molecular weight 56 g/mol and contains 85.7% carbon.It easily adds one mol of HBr to produce a chiral alkyl bromide.Which of the following structures could be the hydrocarbon? A) B) C) D) E)
C) A hydrocarbon has a molecular weight 56 g/mol and contains 85.7% carbon.It easily adds one mol of HBr to produce a chiral alkyl bromide.Which of the following structures could be the hydrocarbon? A) B) C) D) E)
D) A hydrocarbon has a molecular weight 56 g/mol and contains 85.7% carbon.It easily adds one mol of HBr to produce a chiral alkyl bromide.Which of the following structures could be the hydrocarbon? A) B) C) D) E)
E) A hydrocarbon has a molecular weight 56 g/mol and contains 85.7% carbon.It easily adds one mol of HBr to produce a chiral alkyl bromide.Which of the following structures could be the hydrocarbon? A) B) C) D) E)

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Which of the following alcohols can eliminate water to produce alkene? I.phenol II.HOC(CH3) 3 III.HOCH(CH3) 2


A) II and III
B) I ,II and III
C) III only
D) I and II
E) II only

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A

Lindlar's catalyst is used when ________.


A) we want to reduce alkynes to alkanes
B) we want to speed up HX addition reactions
C) we have to promote elimination reactions over substitution reactions
D) we need to activate Pd hydrogenation catalyst
E) we want to reduce alkynes to Z alkenes

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Which of the following compounds could be used as catalysts in halogenation of benzene? I.AlCl3 II.NaCl III.FeBr3 IV.MgCl2 V.PbCl2


A) I and V
B) II and III
C) II and IV
D) I and III
E) III and V

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You need to substitute one hydrogen with bromine on an aromatic ring.What reagents do you use?


A) HBr and FeBr3 as catalyst
B) Br2 and heat
C) Br2 and FeBr3 as catalyst
D) a mixture of HBr and conc.H2SO4
E) Br2 and radiation (hυ)

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The step reaction polymerizations are fast polymerization reactions.

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False

Reactions between alkanes and HX compounds are typical examples of addition reactions.

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For which type of reaction is the following an example? For which type of reaction is the following an example? A) substitution B) elimination C) polymerization D) rearrangement E) addition


A) substitution
B) elimination
C) polymerization
D) rearrangement
E) addition

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Classify the following polymers as atactic,isotactic or syndiotactic: Classify the following polymers as atactic,isotactic or syndiotactic: A) Polymer A is isotactic,polymer B is atactic and polymer C is syndiotactic. B) Polymer A is atactic,polymer B is isotactic and polymer C is syndiotactic. C) Polymers A and B are isotactic and polymer C is syndiotactic. D) Polymer A is isotactic and polymers B and C is syndiotactic. E) Polymer A is syndiotactic,polymer B is isotactic and polymer C is atactic.


A) Polymer A is isotactic,polymer B is atactic and polymer C is syndiotactic.
B) Polymer A is atactic,polymer B is isotactic and polymer C is syndiotactic.
C) Polymers A and B are isotactic and polymer C is syndiotactic.
D) Polymer A is isotactic and polymers B and C is syndiotactic.
E) Polymer A is syndiotactic,polymer B is isotactic and polymer C is atactic.

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Suggest reagents for the synthesis of meta-chloronitrobenzene from nitrobenzene.


A) Cl2 and AlCl3
B) HCl and AlCl3
C) Cl2 and H2SO4
D) HCl and HNO3
E) Cl2 and FeBr3

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Give the product(s) of the reaction (in H2SO4) : CH2=CHCH3 + H2O → product(s)


A) CH2OHCH(OH) CH3
B) CH2OHCH2CH3
C) CH2OHCHOHCH3 + H2
D) CH3CH2CH3 + H2O2
E) CH3CH(OH) CH3

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E

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