Font size
WorksheetsGeneral Organic Chemistry
Total questions: 16
Worksheet time: 11mins
Fill in the blank for the combustion of propane:
Don't forget to balance the missing part.
5O2
5O
6O2
6O
What is the definition of a hydrocarbon?
A molecule which contains hydrogen and carbon atoms only.
A molecule which contains hydrogen and carbon.
A molecule which contains single bonds only.
A molecule which contains single bonds.
Which of the following is the general formula for alkenes?
CnH2n+2
CnH2n
C2nHn+2
C2nHn
What happens when you add an alkene to bromine water? What type of reaction is this?
The bromine water would change to a pink colour. This is a substitution reaction because the bromine molecule is added across the double bond.
The bromine water would decolourise. This is a substitution reaction because the bromine is being added across the double bond.
The bromine water would decolourise. This is an addition reaction because the bromine is being added across the double bond.
The reaction bromine water turns pink This is an addition reaction because the bromine is being added across the double bond
Which two atoms are in a hydroxyl group?
oxygen and sulphur
oxygen and carbon
hydrogen and sulphur
hydrogen and oxygen
What is the name for the -COOH function group?
Which one of the following statements is incorrect?
Hydrocarbons with a short carbon chain length have a lower boiling point. So they condense at the top of the fractional column.
Hydrocarbons with a long carbon chain lengths have a lower boiling point. So they condense at the top of the fractional column.
Is pentane a saturated or unsaturated hydrocarbon?
Saturated
unsaturated
Is the following compound a hydrocarbon?
NaOH
Give your answer as yes or no only.
YES
NO
Which of the following will undergo addition reactions?
CH4
C3H8
C2H6
C2H4
Why does carbon form compounds mainly by covalent bonding?
There are four electrons in the outermost shell of carbon.
It requires large amount of energy to form C4+ or C4-
It shares its valence electrons to complete its octet.
All the above.
Addition reactions are undergone by
saturated hydrocarbons (alkanes)
only alkenes
only alkynes
both alkenes and alkynes
Which of the following belongs to homologous series of alkynes?
C6H6
C2H4
C2H6
C3H4
A hydrocarbon has four carbon atoms. Give its molecular formula if it is an alkene.
(a) C4H10
(b) C4H8
(C) C4H6
(d) C4H4
The first member of the alkyne homologous series is
Ethyne
methane
propynne
methyne
A group of organic compounds having similar structures and similar chemical properties in which the successive compounds differ by CH2 group is called a
(a)
