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- 1. Multiple Choice
1. Which alkyl halide has the highest reactivity for a particular alkyl group?
R-F
R-Cl
R-I
R-Br
- 2. Multiple Choice
Write the order of increasing S1N reactivity for the following alkyl halides:
A) CH3-X
B) (CH3)2CH-X
C) (CH3)3C-X
D) (CH3)3C-CH2-X
a) A>C>B>D
b) C>A>B>D
c) C>B>D>A
d) D>C>B>A
- 3. Multiple Choice
3. Which of the following is not the method of preparation of alkyl halide?
a) Darzen’s method
b) Halogenation of alkene
c) Addition of HX on alkenes
d) Hydration of alkene
- 4. Multiple Choice
Toluene reacts with a halogen in the presence of iron (III) chloride giving ortho and para halo compounds. The reaction is
Electrophilic elimination reaction
Electrophilic substitution reaction
Free radical addition reaction
Nucleophilic substitution reaction
- 5. Multiple Choice
Chlorobenzene is formed by reaction of chlorine with benzene in the presence of AlCl3. Which of the following species attacks the benzene ring in this reaction?
Cl-
Cl+
AlCl3
[AlCl4]-
- 6. Multiple Choice
Which of the following reactions can be used to fluorinate a compound?
Sandmeyer’s reaction
Darzen’s reaction
Hunsdicker reaction
Swartz reaction
- 7. Multiple Choice
If a substrate undergoing S2N reaction was of one stereoisomer, what would the product be like?
.A racemic mixture
One stereoisomer
An unequal mixture of enantiomers
A non-chiral compound
- 8. Multiple Choice
Ethylidene chloride is a/an ______________.
vic-dihalide
gem-dihalide
allylic halide
vinylic halide
- 9. Multiple Choice
. Which is the correct increasing order of boiling points of the following compounds?
Bromobenzene < 1-Bromobutane < 1-Bromopropane < 1-Bromoethane
Bromobenzene < 1-Bromoethane < 1-Bromopropane < 1-Bromobutane
1-Bromopropane < 1-Bromobutane < 1-Bromoethane < Bromobenzene
1-Bromoethane < 1-Bromopropane < 1-Bromobutane < Bromobenzene
- 10. Multiple Choice
Which reagent will you use for the following reaction?
CH3CH2CH2CH3 → CH3CH2CH2CH2Cl + CH3CH2CHClCH3
Cl2 /UV light
NaCl + H2SO4
Cl2 gas in dark
Cl2 gas in the presence of iron in dark
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