Q.1
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
0 h : 0 m : 1 s