Acidified potassium dichromate is an example of...
an alkali
a reducing agent
a fuel
an oxidising agent
Q.2.
Alcohols can be oxidised by...
combustion
freezing
decomposition
addition
Q.3.
An alcohol can be __________________ to form a carboxylic acid
oxidised
reduced
polymerised
broken down
Q.4.
Which type of polymerisation uses only one monomer?
addition polymerisation
condensation polymerisation
Q.5.
What is made when a dicarboxylic acid reacts with a diol?
a polyamide
a polyester
an evaporation polymer
a condensation polymer
Q.6.
Which homolgous series contains a C=C double bond?
alkanes
alkenes
alcohols
carboxylic acids
Q.7.
What are the products formed when organic compounds burn completely ?
carbon and oxygen
carbon dioxide and water
carbon, carbon monoxide and water
carbon, carbon dioxide and water
Q.8.
A compound consists of carbon and hydrogen elements only. It also contains a carbon-carbon double bond. This compound is known as
saturated organic compound
unsaturated organic compound
saturated hydrocarbon
unsaturated hydrocarbon
Q.9.
Tetradecane (C14His an alkane found in crude oil. When tetradecane is heated to a high temperature, one molecule of tetradecane decomposes to form one molecule of hexane and three more molecules.Which of the following could represent this reaction?
C14H30 → C6H14 + C4H8 + 2C2H4
C14H30 → C6H14 + C6H12 + C2H4
C14H30 → C5H12 + 3C3H6
C14H30 → C6H14 + C2H6 + 2C3H6
Q.10.
Which one of the following statements explains best why fluoroalkanes are the least reactive haloalkanes?
Fluorine is much more electronegative than carbon.
The F− ion is the most stable halide ion.
The C–F bond is the most polar carbon–halogen bond.
The C–F bond is the strongest carbon–halogen bond.
Q.11.
How many different alkenes are formed when 2-bromo-2-methylbutane reacts with ethanolic potassium hydroxide?
2
3
4
5
Q.12.
Pentanenitrile can be made by reaction of 1-bromobutane with potassium cyanide.Which of these is the correct name for the mechanism of this reaction?
Electrophilic addition
Electrophilic substitution
Nucleophilic addition
Nucleophilic substitution
Q.13.
Which of the following mechanisms does not occur in reactions of bromoethane?
Electrophilic addition
Elimination
Nucleophilic substitution
Radical substitution
Q.14.
Which statement about E-1,2-dichloroethene is NOT correct?
It has the same boiling point as Z-1,2-dichloroethene.
It forms a polymer with the same repeating unitas Z-1,2-dichloroethene.
It has the same IR spectrum as Z-1,2-dichloroethenein the range 400–1500 cm−1.
It has a molecular ion peak different from that ofZ-1,2-dichloroethene in its mass spectrum.
Q.15.
Which statement is correct about poly(chloroethene)?
It has the empirical formula CHCl
It decolourises bromine water.
Its brittleness is reduced by plasticisers.
Its polymer chain contains alternate single and double bonds.
Q.16.
Which statement about ethene is correct?
It has no geometric isomers because there is free rotation around the C=C bond.
It reacts with HBr in a nucleophilic addition reaction.
It burns in excess oxygen to produce carbon dioxide and water.
The C=C bond is twice as strong as the C–C bond in ethane.
Q.17.
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
Q.18.
What is the major product of the reaction between but-1-ene and DBr? (D is deuterium and represents 2H)
CH2DCH2CH2CH2Br
CH2DCH2CHBrCH3
CH3CH2CHBrCH2D
CH3CH2CHDCH2Br
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