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3

Organie Chemistry Exam Term Nr 3

Fuli name............................................

Part 1

No	Problem	The answer
1	In reaction of ethyl benzoate with an excess of phenylmagnesium bromide is obtained: a) 2-phenyl-2-propanol; b) triphenylmethanol; c) 1-phenyl-1-propanol; d) 4-phenyl-l-butanol
2	In reaction of methoxybenzene (anizole) with bromine under reflux is obatned: a) pentabromoanizol; b) 3,5-dibromoanizol; c) 4-bromoanizol; d) 2,3-dibromoanizol
0 1	What substrates are used for the synthesis of 4-hydroxy-4-methyl-2-pentanone: a) two molecules of acetone; b) acetone + propanal; c) two molecules of ethanal; d) ethanal + propanal
4	Iiow many atoms of 1,2-dichloroethene molecule are there in one piane: a) 2; b) 4, c) 6; d) any one.
5	The most stable cation is: a) benzyl; b) ethyl; c) trityl; d) methyl
6	lndicated which acid is strongest m acjuoeus solution: a) acetic acid; b) chloroacetic acid; c) dichloroacetic acid; d) trifluoroacetic acid
7	3-Phenyl-2-butanol treated with concd. sulphuric acid under reflux gives: a) 1-phenyłpropane; b) 3-phenylpropene; c) 2-phenyl-2-butene; d) 2-phenyl-l-butene
8	Benzene diazonium sulphate heated in the presence of cuprous cyanide gives: a) benzonitrile; b) o-kresole; c) 2-methylbenzonitrile; d) p-cresole
9	Addition of bromine molecule to cyclopentene gives: a) 1,1-dibromocyclopentane; b) cis 1,2-dibromocyclopentane; c) trans 1,2-dibromocyclopentane; d) 1,3-
	dibromocyclopentane
10	In reaction of ketene with acetic acid is obtained: a) ethyl acetate; b) ethanol; c) propionic acid; d) acetic anhydride
11	^rfhe Beckmann rearrangement of (Z)-oxime of acetophenone yields: a) N-acetylbenzamide; b) N-benzoylacetamide; c) benzamide; d) N-methylbenzamide
12	The highly acidic proton is present in the molecule of: a) ethane; b) benzene; c) nitromethane; d) toluene.