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WorksheetsBENZENE AND HALOALKANES
Total questions: 10
Worksheet time: 2hrs 45mins
Which of the following statements about benzene is true?
Six 2p orbitals overlap to form three delocalized л bonds.
All carbon atoms are sp-hybridised.
Benzene undergoes addition reaction.
Molecular formula of benzene is C6H5.
Friedel-Crafts acylation
Hoffman’s Degradation
Coupling reaction
Friedel-Crafts alkylation
Which of the following compounds does not decolourise reddish brown of bromine with the present of ultraviolet light?
Toluene
Benzene
Cyclohexene
1,2-dimethylbenzene
Phenol
Nitrobenzene
Methylbenzene
Phenylmethanol
The main reaction of haloakanes is
Free radical substitution
Electrophilic substitution
Condensation
Nucleophilic substitution
Iodoethane reacts with hydroxide ion, through SN2 mechanism. What is the effects by doubling the concentration of OH- and decreasing the concentration of iodoethane by factor of 2?
The rate of reaction is doubled
The rate of reaction remain the same
The rate of reaction is quadrupled
The rate of reaction decrease by factor of 2
Which one of the following would you expect to have the highest boiling point?
CH3CH2CH(CH3)CH3
CH3CH2CH2CH2Cl
CH3CH2CH2CH2OH
CH3CH2-O-CH2CH3
Haloalkanes can be synthesis directly from
Alcohols
Amines
Benzene
Aldehydes
Which of the following methods can be used to make alcohols?
i. Electrophilic addition of water to an alkene in the presence of an acid catalyst
ii. Boiling a haloalkane with aqueous sodium hydroxide under reflux
iii. Passing carbon dioxide through a solution of a Grignard reagent
i only
i and ii
ii and iii
i, ii and iii
