A) Methyl bromide
B) Isopropyl chloride
C) Tertiary butyl chloride
D) Ethyl iodide
View AnswerC
57. What is the preferred reaction mechanism for secondary alkyl halides in the presence of a strong base?
A) SN1
B) SN2
C) E1
D) E2
View AnswerD
58. Which type of hybridization is associated with the carbocation formed during an SN1 reaction?
A) sp
B) sp2
C) sp3
D) dsp3
View AnswerB
59. In an E2 mechanism, what kind of base is typically used?
A) Weak base
B) Neutral base
C) Strong base
D) Nucleophilic base
View AnswerC
60. Which of the following alkyl halides will not undergo an SN2 reaction?
A) Methyl bromide
B) Ethyl iodide
C) Tertiary butyl chloride
D) Benzyl chloride
View AnswerC
61. What is the major product when 2-bromobutane undergoes an E2 elimination with a strong base?
A) Butene
B) Butanol
C) Ethene
D) Methane
View AnswerA
62. In an SN1 reaction, how many steps are involved?
A) 1
B) 2
C) 3
D) 4
View AnswerB
63. What is the major product when 1-bromopropane reacts with sodium hydroxide in an SN2 reaction?
A) Propene
B) 1-propanol
C) Propane
D) 2-propanol
View AnswerB
64. Which factor influences the rate of an E1 reaction?
A) Strength of nucleophile
B) Carbocation stability
C) Concentration of base
D) Electrophile size
View AnswerB
65. In an E2 reaction, what type of product is typically formed?
A) Alkene
B) Alkane
C) Alcohol
D) Ether
View AnswerA
66. What happens to the configuration of the carbon center in an SN2 reaction?
A) Retention
B) Inversion
C) Racemization
D) No change
View AnswerB
67. Which factor increases the rate of an SN1 reaction?
A) Strong nucleophile
B) Weak base
C) Polar protic solvent
D) Neutral solvent
View AnswerC
68. What is the product of the E2 reaction of 2-chloropentane?
A) Pentene
B) Pentane
C) 2-pentanol
D) 1-pentene
View AnswerA
69. Which of the following halides is most reactive in SN1 reactions?
A) Methyl chloride
B) Ethyl bromide
C) Isopropyl chloride
D) Tertiary butyl iodide
View AnswerD
70. Which elimination mechanism proceeds through a concerted process?
A) E1
B) E2
C) SN1
D) SN2
View AnswerB
71. What happens in the first step of an SN1 reaction?
A) Formation of a carbocation
B) Nucleophilic attack
C) Leaving group departure
D) Formation of transition state
View AnswerC
72. In an SN2 reaction, how does the nucleophile attack the substrate?
A) From the front
B) From the side
C) From the back
D) From above
View AnswerC
73. What is the major product when 2-bromo-2-methylpropane reacts in an E1 reaction?
A) Isobutene
B) Butene
C) Propene
D) 2-butanol
View AnswerA
74. Which halide is most likely to undergo substitution via the SN1 mechanism?
A) Methyl bromide
B) Primary alkyl halide
C) Secondary alkyl halide
D) Tertiary alkyl halide
View AnswerD
75. In an E2 mechanism, what orientation is required for the elimination to occur?
A) Syn-periplanar
B) Anti-periplanar
C) Cis configuration
D) Trans configuration
View AnswerB
76. Which of the following is an example of a strong nucleophile used in SN2 reactions?
A) Water
B) Methanol
C) Hydroxide ion
D) Ammonia
View AnswerC
77. What is the effect of a bulky base on the product of an E2 reaction?
A) Forms a more substituted alkene
B) Forms a less substituted alkene
C) Forms a carbocation intermediate
D) Leads to substitution instead of elimination
View AnswerB
78. Which halide will undergo substitution faster via the SN2 mechanism?
A) Methyl iodide
B) Ethyl bromide
C) Isopropyl chloride
D) Tertiary butyl iodide
View AnswerA
79. What is the major product of the E1 elimination of 2-chloro-2-methylbutane?
A) 2-methyl-2-butene
B) 2-methyl-1-butene
C) 1-butene
D) Propene
View AnswerA
80. What type of product is formed in the elimination reaction of an alkyl halide?
A) Alkane
B) Alkene
C) Alkyne
D) Ether
View AnswerB
81. Which of the following is not involved in an SN2 reaction?
A) Backside attack
B) Inversion of configuration
C) Carbocation formation
D) Single-step process
View AnswerC
82. What is the rate-determining step in an E1 reaction?
A) Loss of proton
B) Formation of carbocation
C) Attack by nucleophile
D) Departure of the leaving group
View AnswerB
83. Which of the following is a characteristic of the E2 mechanism?
A) Stepwise process
B) Requires a strong base
C) Formation of a carbocation intermediate
D) Inversion of configuration
View AnswerB
84. What type of alkene is typically formed in an E2 reaction?
A) Cis alkene
B) Trans alkene
C) Terminal alkene
D) Aromatic compound
View AnswerB
85. Which factor increases the rate of an SN2 reaction?
A) Increased steric hindrance
B) Polar protic solvent
C) Polar aprotic solvent
D) Weak nucleophile
View AnswerC
86. Which of the following reactions involves a one-step mechanism?
A) E1
B) SN1
C) SN2
D) E1cB
View AnswerC
87. Which of the following alkyl halides is least reactive in an SN1 mechanism?
A) Methyl chloride
B) Ethyl bromide
C) Isopropyl chloride
D) Tertiary butyl chloride
View AnswerA
88. In an SN1 reaction, what stabilizes the carbocation intermediate?
A) Hyperconjugation
B) Hydrogen bonding
C) Van der Waals forces
D) Inversion of configuration
View AnswerA
89. What is the major product of the E2 elimination of 2-bromo-2-methylpropane?
A) Isobutene
B) Ethene
C) Butane
D) 1-butene
View AnswerA
90. What effect does increasing the concentration of the base have on the rate of an E2 reaction?
A) Decreases the rate
B) Increases the rate
C) No effect
D) Reverses the reaction
View AnswerB
91. Which of the following alkyl halides is most likely to undergo an SN2 reaction?