WorksheetsAS Organic Chemistry
Total questions: 25
Worksheet time: 2hrs 38mins
What is the name of this compound?
ethanol
ethanal
ethanone
methanal
What is the name of this compound?
propan-2-al
propanane
propanone
propanal
Which compound is a structural isomer of Z-but-2-ene?
butane
E-but-2-ene
cyclobutane
methylbut-2-ene
Which equation is a propagation step in the conversion of trichloromethane into tetrachloromethane by reaction with chlorine in the presence of ultraviolet light?
CHCl3 + Cl2 ⟶ CCl4 + HCl
●CCl3 + ●Cl ⟶ CCl4
CHCl3 + ●Cl ⟶ CCl4 + ●H
●CCl3 + Cl2 ⟶ CCl4 + ●Cl
How many structural isomers are there with the molecular formula C3H6BrCl?
4
5
6
7
How many different alkenes are formed when 2-bromo-3-methylbutane reacts with ethanolic potassium hydroxide?
2
3
4
5
An organic compound is found to contain 40.0% carbon, 6.7% hydrogen and 53.3% oxygen.Which of the following compounds could this be?
Ethanol
Ethanoic acid
Methanol
Methanoic acid
Which one of the following mechanisms is not involved in the reaction sequence below?
CH3CH3 → CH3CH2Cl → CH3CH2OH → CH2=CH2 → CH3CH2Br
electrophilic addition
electrophilic substitution
nucleophilic substitution
free-radical substitution
What is the correct systematic name for
2-bromo-3-methylpent-2-ene
2-bromo-3-ethylbut-2-ene
3-bromo-2-ethylbut-2-ene
4-bromo-3-methylpent-3-ene
What is the correct systematic name for
2-ethyl-3,4-dimethylpent-2-ene
4-ethyl-2,3-dimethylpent-3-ene
2,3,4-trirnethylhex-3-ene
3,4,5-trimethylhex-3-ene
Chlorination of alkanes is an example of
Elimination reaction
Free radical substitution reaction
Nucleophilic substitution reaction
Electrophilic addition reaction
Which of the following cannot react as a nucleophile?
CH3NH2
(CH3)2NH
(CH3)3N
(CH3)4N+
Which among the following does not exhibit geometric isomerism?
1-hexene
2-hexene
3-hexene
4-hexene
The molecular formula C5H12 contains how many isomeric alkanes?
1
2
3
4
Which of the following is NOT true about nucleophiles?
donates an electron pair to an electrophile to form a chemical bond
all molecules or ions with a free pair of electrons or at least one pi bond can act as nucleophiles
nucleophile are Lewis acids by definition
a nucleophile becomes attracted to a full or partial positive charge
Which of the following statement is INCORRECT about electrophiles?
Electrophiles are positively charged or neutral species having vacant orbitals
The electrophiles are attacked by the most electron-populated part of one nucleophile
Electrophiles are Lewis base
General formula for amines is
R-CH2
R2CH
R-NH2
R-COOH
What kind of molecule is this?
alkane
alkene
alkyne
cycloalkane
What is a functional group?
Atoms or group of atoms that give specific characteristics to a molecule
Group of molecules that make up a group of atoms
Group of molecules that give specific characteristics to an atom
Group of atoms that give specific characteristics to an element
How to determine that a molecule exhibit E/Z isomerism?
Restricted rotation in a carbon-carbon single bond of alkenes
Each carbon of a site of restricted rotation has 2 different atoms or groups attached to it
Exist in cyclic compouds only
Similar chemical properties
Which of the following molecules exhibit geometrical isomerism?
CH2=CHCH3
C6H5CH=CHC6H5
(CH3)2C=CHCH3
CH3CH2N=OH
which compound reacts with Tollen's reagent to give a silver mirror?
butan-2-ol
butanal
butanone
but-2-ene
which compound decolorises bromine water?
butan-2-ol
butanal
butanone
but-2-ene
Which compound effervesces with sodium carbonate?
propan-2-ol
propanoic acid
propanal
propene
3 of the compounds below can turn acidified potassium dichromate (VI) orange to green which are?
propan-1-ol
propan-2-ol
2-methylpropan-2-ol
3,3 dimethylbutan-2-ol
