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Hydrocarbons
Quiz 1
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Q.1
What is the general formula of the alkenes?
CnH2n+1
CnH2n+2
CnH2n
CnH2n+1OH
Q.2
Where in the fractionating column are shorter chain hydrocarbon molecules obtained?
At the top
At the bottom
Q.3
What is the term given to the process by which longer chain hydrocarbons are broken down into shorter length alkanes and alkenes?
fractional distillation
evaporation
cracking
polymerisation
Q.4
When testing for alkenes (unsaturation) bromine water turns from...
orange --> blue/black
colourless --> pink
orange --> colourless
orange --> clear
Q.5
Both alkanes and alkenes react rapidly with aqueous bromine at room temperature.
True
False
Q.6
If an alkene reacts with a halogen, it is known as what type of reaction?
Addition
Combustion
Polymerisation
Hydrogenation
Q.7
Molecules collected at the bottom of the fractionating column tend to be...
more viscous, less flammable and less volatile
less viscous, more flammable and more volatile
more viscous, more flammable and less volatile
less viscous, less flammable and more volatile
Q.8
Identify the main characteristics of an organic compound
High melting point
polar
conductor
can exist in solid, liquid, and gas
Q.9
Identify the main characteristics of an organic compoung
Low melting point
nonpolar
non-conductor
All of the above
Q.10
Which of the following elements must be present in any organic compound?
Carbon
Oxygen
Potassium
Hydrogen
Q.11
Which is an organic compound?
Carbon Dioxide
Carbon Monoxide
Carbonates
Ethane
Q.12
Which of the following has the highest boiling points
alkanes
alkenes
alkynes
alkanols
Q.13
Which of the following does not contain only carbon and hydrogen
alkanes
alkenes
alkynes
alkanols
Q.14
Which of the following is more volatile?
petrol
diesel
oil
my temper
Q.15
Which one of the following is saturated?
water
C4H8
C4H10
C5H8
Q.16
Which of the following could contain a triple bond?
C4H10
C4H8
C4H6
C4H12
Q.17
Which of the following has the highest viscosity
petrol
diesel
biodiesel
LPG
Q.18
Which of the following would have the highest melting point?
C3H8
C4H8
C5H12
C22H44
Q.19
Which of the following generally undergoes substitution reactions
alkanes
alkenes
Alkanes and alkenes
algebras
Q.20
The molecular formula for Heptane is
C4H10
C7H18
C5H12
C7H16
0 h : 0 m : 1 s
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