WorksheetsReactions of alkanes
Total questions: 25
Worksheet time: 20mins
What happens if an alkane reacts with limited oxygen?
Produced carbon dioxide and water
Produced carbon monoxide and water
Produced oxygen and water
Produced soot and water
What is the general formula of alkanes?
(a)
The formula of the 8th member of the alkane family is (a)
Th name of the 8th member of the alkane family is (a)
What is the condition needed for substitution reaction with chlorine?
presence of sunlight
presence of red light
presence of UV light
all of the above
Which of the following is NOT a product formed when methane reacts under the needed conditions with chlorine?
CH3Cl
CH2Cl2
CHCl4
CCl4
What type of chemical reaction is this:
C3H8 + 5O2 --> 3CO2 + 4H2O
Incomplete combustion
Substitution with oxygen
Complete combustion
Substitution with chlorine
What type of chemical reaction is this:
C3H8 + Br2 --> C3H7CBr + HBr
Incomplete combustion
Substitution with chlorine
Complete combustion
Substitution with bromine
Which of the following is true about incomplete combustion?
It takes place because there is too much supply of air
It takes place because there is not enough supply of air
The products are soot and hydrocarbons
The products are hydrogen and water
Which two elements do all organic compounds contain?
Carbon and hydrogen
Carbon and oxygen
Oxygen and hydrogen
Carbon and nitrogen
What are the first 3 alkenes in increasing carbon chain length?
Methene, ethene, propene
Ethene, propene, pentene
Ethene, propene, butene
Butene, ethene, propene
Methene, ethene, propane
Which of the following generally undergoes substitution reactions
alkanes
alkenes
Alkanes and alkenes
algebras
What is the main product when methane reacts with chlorine in the presence of UV light?
Chloromethane
Ethane
Methanol
Carbon dioxide
What type of bond is primarily found in alkanes?
Ionic bond
Covalent bond
Hydrogen bond
Metallic bond
What is the simplest alkane?
Methane
Ethane
Propane
Butane
What is the main source of alkanes?
Coal
Natural gas
Wood
Metal ores
What is the effect of increasing molecular weight on the boiling point of alkanes?
Boiling point decreases
Boiling point increases
Boiling point remains constant
Boiling point fluctuates
Why do we use cracking to get petrol?
The supply of petrol from cracking is larger than the demand
The supply of petrol from fractional distillation is larger than the demand
The supply of petrol from fractional distillation is smaller than the demand
The supply of petrol from cracking is smaller than the demand
What is always produce during cracking?
Alkane + alkane
Alkane + alkene
Alkene + alkene
What type of reaction is cracking?
Addition
Displacement
Thermal decomposition
Neutralisation
Which type of cracking requires zeolite?
Steam
Catalytic
Octane (8 carbons) is cracked into hexane (6 carbons) and an alkene. What is the name of this alkene?
Ethene
Propene
Butene
Pentene
