2-Bromopentane reacts with alcoholic KOH to give-
Cis-2-Pentene
Trans-2-Pentene
1-Pentene
None of the above
Isopropyl chloride undergoes hydrolysis by -
SN1 and SN2 mechanisms
Neither SN1 nor SN2 mechanisms
3, SN1 mechanism only
SN2 mechanism only
Chloroform is slowly oxidized by air in the presence of light and air to form
Phosgene
Formyl chloride
fFormaldehyde
Trichloroethanol
Isobutyl bromide may be obtained from isobutylene and HBr in the presence of
Hydroquinone
Diphenylamine
Peroxide
All of the above
The reaction of 4-bromobenzyl chloride with NaCN in ethanol leads to-
4-Bromo-2-cyanobenzyl chloride
4-Cyanobenzyl cyanide
4-Cyanobenzyl chloride
4-Bromobenzyl cyanide
Propene upon heating with Cl2 at 500oC forms -
CH3-CHCl-CH2Cl
CH2Cl-CH=CH2
CH2Cl-CHCl-CH2Cl
2-Bromopentane is heated with KOH in ethanol. The major product obtained is-
2-Ethoxypentane
1-Pentane
cis-2-Pentane
trans-2-Pentene
Ethyl bromide reacts with lead-sodium alloy to form
tetramethyl bromide
tetraethyl lead
both (1.) and (2.)
none of these
Butanenitrile is formed by the reaction of KCN with -
Butyl chloride
Propyl chloride
Butyl alcohol
Propyl alcohol
A molecule among the following having the highest melting point is -
Chlorobenzene
o-Dichlorobenzene
m-Dichlorobenzene
p-Dichlorobenzene
Toluene refluxed with Br2 in the presence of light generate mainly -
p-Bromotoluene
Benzyl bromide
o-Bromotoluene
Mixture of o- and p-bromotoluene
Chloroform when reacts with nitric acid, gives
C2H5C(NO)5SH
(CH3)2CHOH
CCl3NO2
CCl3NO3
On sulphonation of C6H5Cl, the product obtained is-
m-Chlorobenzene sulphonic acid is formed
Benzene sulphonic acid is formed
o-Chlorobenzene sulphonic acid is formed
o-and p-Chlorobenzene sulphonic acid is formed
Toluene on reaction with N-Bromosuccinimide gives
Phenyl bromomethane
o-Bromomethyl benzene
p-Bromomethyl benzene
m-Bromomethyl benzene
The IUPAC name of p-ClC6H4CH2CH(CH3)2 is -
1−Chloro−4−(2−methylpropyl) benzene
4−Chloro−1−(2−methylpropyl) benzene
1−Chloro−4−(3−methylpropyl) benzene
4−Chloro−4−(3−methylpropyl) benzene
The IUPAC name of CH3C(p-ClC6H4)2CH(Br)CH3 is -
2−Bromo−3,3−bis(4−chlorophenyl) butane
4−Bromo−3,3−bis(2−chlorophenyl) butane
2−Bromo−1,1−bis(4−chlorophenyl) butane
4−Bromo−1,1−bis(2−chlorophenyl) butane
The correct IUPAC name of the above-mentioned compound is -
1−Chloro−4−(1−iodophenyl)−3, 3−dimethylbut−1−ene
1−Chloro−1−(4−iodophenyl)−3, 3−dimethylbut−1−ene
1−Chloro−2−(3−iodophenyl)−3, 3−dimethylbut−1−ene
4−Chloro−1−(1−iodophenyl)−1, 1−dimethylbut−3−ene
The number of structural isomers possible for the compound with the formula C4H9Br, is-
5
6
4
2
n-BuBr + KCN →EtOH -H2O nBuCN
Above reaction is an example of -
Addition reaction
SN1
Elimination reaction
SN2
Match the compounds given in Column I with the effect given in Column II.
Column l
Column lI
A. Chloramphenical
1. Malaria
B. Thyroxine
2. Anaesthetic
C. Chloroquine
3. Typhoid fever
D. Chloroform
4. Goiter
5. Blood substituent
Codes
A B C D
2 3 4 1
3 4 1 2
5 4 3 2
4 5 3 2
Match the items of Column I and Column II
Column ll
A. SN1 reaction
1. vic-dibromide
C. Bromination of alkenes
3. Racemisation
D. Chemicals in fire extinguisher
4. Saytzeff rule
1 4 3 2
4 1 3 2
Match the structures of compounds given in Column I with the classes of compounds given in Column II.
A.
1. Aryl halide
B. CH2=CH—CH2—X
2. Alkyl halide
C.
3. Vinyl halide
D. CH2=CH—X
4. Allylic halide
2 4 1 3
Match the reactions given in Column I with the types of reactions given in column II
COLUMN I
COLUMN II
1. Nucleophilic aromatic substitution reaction
2. Electrophilic aromatic substitution
3. Saytzeff elimination
4. Electropillic addition
5. Nucleophilic substitution reaction
2 4 5 1
3 1 5 2
Match the reactions given in Column I with the names given in Column
D. C2H5Cl + NaI →dry acetoneC2H5I + NaCl
1. Fittig reaction
2. wurtz-Fittig reaction
3. Finkelstein reaction
4. Sandmeyer reaction
2 1 4 3
Assertion: Phosphorus chlorides (tri and Penta) are preferred over thionyl chloride for the preparation of alkyl chlorides from alcohols.
Reason: Phosphorus chlorides give pure alkyl halides.
Both assertion and reason are true and the reason is the correct explanation of assertion.
Both assertion and reason are true and the reason is not the correct explanation of assertion.
Assertion is true but the reason is false.
Assertion and reason both are false.
Assertion: The boiling points of alkyl halides decrease in the order RI> RBr > RCl > RF
Reason: The boiling points of alkyl chlorides, bromides, and iodide are considerably higher than that of the hydrocarbon of comparable molecular mass.
Assertion is false but the reason is true.
Assertion: KCN reacts with methyl chloride to give methyl isocyanide
Reason: CN- is an ambident nucleophile.
Assertion: The presence of a nitro group at ortho or para position increases the reactivity of haloarenes towards nucleophilic substitution.
Reason: Nitro group, being an electron-withdrawing group decreases the electron density over the benzene ring.
Assertion: It is difficult to replace chlorine with -OH in chlorobenzene in comparison to that in chloroethane.
Reason: Chlorine carbon (—Cl) bond in chlorobenzene has a partial double bond character due to resonance
Sulphuric acid is not used during the reaction of alcohols with KI and acts as-
Reducing agent
Electron donor
Electron acceptor
Oxidising agent
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