Elimination Reactions of Alkyl Halides
Trending Questions
Q.
Allyl chloride on dehydrochlorination gives
Allyl alcohol
Acetone
Propadiene
Propylene
Q.
2-Phenyl-2-chloropropane on treatment with alc.KOH gives mainly:
2-Phenylpropene
3-Phenylpropene
1-Phenylpropan-2-ol
1-Phenylpropan-3-ol
Q. Reactivity of alkyl halides towards dehydrohalogenation reaction is
- 30 > 10 > 20
- 30 > 20 > 10
- 20 > 10 > 30
- 10 > 20 > 30
Q.
By which mechanism does the above reaction proceed ?
α-elimination
β-elimination
γ-elimination
δ-elimination
Q. A dihalogen derivative ‘X’ of a hydrocarbon with three carbon atoms in a molecule, reacts with alc. KOH giving another hydrocarbon which gives red precipitates with ammonical CuCl. ‘X’ gives an aldehyde when treated with aqueous KOH. The compound ‘X’ is
- 1, 2-Dichloropropane
- 2, 2-Dichloropropane
- 1, 1-Dichloropropane
- 1, 3-Dichloropropane
Q. The reaction
is known as
- Wurtz reaction
- Fitting reaction
- Wurtz-Fitting reaction
- Freund reaction
Q. 1-Phenyl-2-chloropropane when treated with alcoholic KOH gives.... as the major product
- 1-Phenylpropene
- 3-Phenylpropene
- 1-Phenyl-2-propanol
- Carbylamine reaction
Q.
Among the following the most reactive towards alcoholic KOH is :
CH2 = CHBr
CH3COCH2CH2Br
CH3CH2Cl
CH3CH2Br
Q.
If the structure of alkyl halide during dehydrohalogenation reaction is such that it can undergo H-elimination from two different sites, then the more highly substituted alkene is the major product. This generalization is known as
Racemization
- Markownikoff's Rule
Saytzeff's Rule
Kharasch's effect
Q. Dehalogenation of meso-2, 3-dibromo-butane results in
- cis-2-Butene
- trans-2-Butene
- n-Butane
- A mixture of cis-and trans-2-Butene