The reaction :
CH2 = CH – CH3 + HBr ( CH3 – CHBr – CH3 is:
nucleophilic addtion
electrophilic addition
electrophilic substitution
free radical addition
The alkyl halide is converted into an alcohol by :
addition
substitution
dehydrohalogenation
elimination
2-Bromopentane is heated with potassium ethoxide in ethanol. The major product obtained is :
2-ethoxypentane
1-pentene
trans-2-penteme
cis-2-pentene
In Friedel-Craft’s alkylation, besides AlCl3 the other reactants are :
C6H6 + NH2
C6H6 + CH4
C6H6 + CH3Cl
C6H6 + CH3COOH
Ethyl chloride is converted into diethyl ether by :
Wurtz synthesis
Grignard reaction
Perkin’s reaction
Williamson’s synthesis
CH3–CH2–CH–CH3 obtained by chlorination of n-butane, will be :
|
Cl
meso form
racemic mixture
d-form
l-form
An organic compound A(C4H9Cl) on reaction with Na/diethyl ether gives a hydrocarbon which on monochlorination gives only one chloro derivative then, A is :
t-butyl chloride
sec. butyl chloride
isobutyl chloride
n-butyl chloride
The product obtained on reaction of C2H5Cl with hydrogen over palladium/carbon is :
C3H8
C4H10
C2H6
C2H4
Reactivity order of halides for dehydrohalogenation is :
R – F > R – Cl > R – Br > R – I
R – I > R – Br > R – Cl > R – F
R – I > R – Cl > R – Br > R – F
R – F > R – I > R – Br > R – Cl
In Friedel-Craft’s reaction, anhyd. AlCl3 acts to :
produce electrophile
produce nucleophile
absorb water
absorb HCl
Chloropicrin is obtained by the reaction of :
steam on carbon tetrachloride
nitric acid on chlorobenzene
chlorine on picric acid
nitric acid on chloroform
Chloropicrin is :
CCl3(NO2)2
CCl2HNO2
CClH2NO2
CCl2NO2
Which of the following reacts with chloroform and base to form phenyl-isocyanide ?
Phenol
Benzene
Nitrobenzene
Aniline
Iodoethane reacts with sodium in presence of dry ether to produce :
butane
butene
pentene
propyne
Ethyl bromide reacts with alcoholic KOH to produce :
ethyl alcohol
ethene
acetic acid
methyl alcohol