Haloalkane And Arene Flashcards
Question: Which of the following haloalkanes will undergo hydrolysis at the fastest rate?
Options:
A) CH₃Br
B) C₂H₅Br
C) (C₃H₇)Br
D) (C₄H₉)Br
C
Question: Which of the following compounds will not undergo electrophilic substitution reaction?
Options:
A) Chlorobenzene
B) Benzene
C) Nitrobenzene
D) Toluene
C
Question: What is the product of the reaction of 2-bromopropane with potassium hydroxide in ethanol?
Options:
A) Propan-2-ol
B) Propene
C) Butane
D) No reaction
B
Question:Which noble gas was discovered first?
Options:
A) Helium
B) Neon
C) Argon
D) xenon
C argon
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Question: What is the main product of the reaction between chlorobenzene and sodium hydroxide at high temperature and pressure?
Options:
A) Phenol
B) Benzene
C) Benzyl alcohol
D) Chlorobenzene
A
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Question: Which of the following is not a characteristic of haloalkanes?
Options:
A) They are more reactive than alcohols.
B) They are polar molecules.
C) They have higher boiling points than alkanes of comparable molecular weight.
D) They readily undergo oxidation.
D
Question:** The reaction between an alkyl halide and magnesium in dry ether is used to form:
Options:
A) Alcohol
B) Ether
C) Grignard reagent
D) Alkene
C
*Question:** Which of the following halogenated hydrocarbons is used as a refrigerant?
Options:
A) CCl₄
B) CFCs (Chlorofluorocarbons)
C) CH₃Cl
D) C₂H₅Br
B
*Question:** The major product of the reaction between benzene and bromine in the presence of a Lewis acid catalyst (like AlBr₃) is:
Options:
A) Bromobenzene
B) Benzyl bromide
C) Dibromobenzene
D) Phenyl bromide
A
Question:** Which of the following haloalkanes has the highest boiling point?
Options:
A) CH₃Cl
B) CH₃Br
C) CH₃F
D) CH₃I
D
Question:** What is the main product when 1-bromobutane is treated with sodium ethoxide in ethanol?
Options:
A) Butanol
B) Butene
C) Butyne
D) No reaction
B
*Question:** Which reaction mechanism is preferred for the nucleophilic substitution of tertiary haloalkanes?
Options:
A) SN1
B) SN2
C) E1
D) E2
A
Question: The stability of carbocations follows the order:
Options:
A) Tertiary > Secondary > Primary
B) Primary > Secondary > Tertiary
C) Secondary > Primary > Tertiary
D) All are equal
A
*Question:** Which of the following is the best nucleophile?
Options:
A) OH⁻
B) NH₃
C) H₂O
D) CH₃Cl
A
Question:** Which halogen compound is least soluble in water?
Options:
A) CH₃Cl
B) CCl₄
C) C₂H₅Br
D) CH₃Br
B
*Question:** The product formed when ethyl bromide is treated with magnesium in dry ether is:
Options:
A) Ethyl alcohol
B) Ethyl magnesium bromide
C) Butane
D) Ethylene
B
Question:** Which of the following compounds is most stable?
Options:
A) CH₃Br
B) (C₂H₅)Cl
C) (C₃H₇)Br
D) (C₃H₇)I
D
*Question:** Which of the following undergoes nucleophilic substitution via the SN2 mechanism?
Options:
A) Tertiary haloalkanes
B) Primary haloalkanes
C) Secondary haloalkanes
D) All of the above
B
*Question:** The most reactive halogen in the context of nucleophilic substitution reactions is:
Options:
A) Fluorine
B) Chlorine
C) Bromine
D) Iodine
D
*Question:** Which of the following is the correct order of bond strength in haloalkanes?
Options:
A) C-F > C-Cl > C-Br > C-I
B) C-Cl > C-Br > C-I > C-F
C) C-I > C-Br > C-Cl > C-F
D) C-Br > C-Cl > C-I > C-F
A
