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15 questions
Which two elements do all organic compounds contain?
Carbon and hydrogen
Carbon and oxygen
Oxygen and hydrogen
Carbon and nitrogen
Organic compounds made only of the elements carbon and hydrogen are called...
Hydrocarbons
Carbohydrogens
Carbohydrates
Hydrocarbonates
Which one of the following characteristics is not correct for all of the members of the same homologous series?
Same general formula
Similar chemical properties, i.e. undergo the same reactions
Varying physical properties, i.e. change in a predictable way
Different functional group
All molecules of the alkane homologous series have which ending in their name?
-ane
-ene
-anol
-anoic acid
The first four alkanes are listed below. In which list are they placed in the correct order, i.e. increasing number of carbon atoms?
methane, ethane, propane, butane
ethane, methane, propane, butane
methane, ethane, butane, propane
methane, propane, ethane, butane
Which type of bonding is present within organic molecules?
Covalent bond
Ionic bond
Metallic bond
Hydrogen bond
Which list does NOT contain compounds found in the same homologous series?
methane, ethane, propane, butane
Pentane, hexanol, heptane, octane
nonane, decane, undecane, dodecane
tridecane, tetradecane, pentadecane, hexadecane
What is the name of the alkane shown here?
Methane
Ethane
Propane
Butane
What technique is used to separate crude oil (Petroleum) into its different fragments?
Evaporation to dryness
Separating funnel
Simple distillation
Fractional distillation
What is substance M?
Petrol (Gasoline)
Paraffin (Kerosene)
Naptha
Lubricating Oil
What is the main constituent of Natural Gas?
Ethene
Helium
Hydrogen
Methane
Why is methane used as a fuel?
It burns and releases energy (Exothermic reaction)
It is a gas
It is odourless
It has a low boiling point
Which fraction is used as a chemical feedstock for the chemical industry?
H
I
J
K
Which fraction is used to pave the road surfaces?
L
M
O
K
Which physical property of the constituents in crude oil allows it to be separated?
boiling point
melting point
solubility
viscosity
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