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Iftin school hydrocarbons

Total questions: 50

Worksheet time: 51mins

Name
Class
Date
1.
Hydrocarbons are compounds that contain
a)
  Carbon and Nitrogen
b)
Carbon and Hydrogen 
c)
  Carbon, and Oxygen
d)
Carbon, Oxygen, and  Hydrogen 
2.
The following compounds have a molecular formula of
a)
CnH2n+2
b)
CH4
c)
C6H14
d)
CH3CH2CH2CH2CH2CH3
3.

What is the general formula of the alkenes?

a)

CnH2n+1

b)

CnH2n+2

c)

CnH2n

d)

CnH2n+1OH

4.
As the number of carbons increases in an homologous series the melting point generally...
a)
increase
b)
decrease
c)
stay the same
d)
varies
5.
Which of the following could contain a triple bond?
a)
C4H10
b)
C4H8
c)
C4H6
d)
C4H12
6.
Which one of the following is saturated?
a)
water
b)
C4H8
c)
C4H10
d)
C5H8
7.

How many carbons are in the longest chain?

a)

7

b)

8

c)

9

d)

10

8.

Name the compound....

a)

propanol

b)

dimethyl ether

c)

mthyoxymethane

d)

methoxyethane

9.
What is the general formula of the alkynes?
a)
CnH2n+1
b)
CnH2n+2
c)
CnH2n-1
d)
CnH2n-2
10.
If an alkane has 20 carbon atoms, how many hydrogen atoms will it have?
a)
20
b)
22
c)
40
d)
42
11.
The "ane" ending in "alkane" tells someone that they are dealing with _________-bonded carbons.
a)
single
b)
double
c)
triple
d)
quadruple
12.

What chemical is this? (C5H10)

a)

Pentene

b)

Pentane

c)

Hexane

d)

Heptene

13.
The molecular formula for Heptane is
a)
C4H10
b)
C8H18
c)
C5H12
d)
C7H16
14.
Classify the compound based on the functional group present.
a)
alkane
b)
alkene
c)
alkyne
d)
aromatic
15.

Which of the following shows the structure of ethene?

a)
b)
c)
d)
16.

Which of the following shows the structure of propene?

a)
b)
c)
d)
17.

What is the structure of 2-methyl pent-2-ene ?

a)

a

b)

b

c)

c

d)

d

18.

Which is the structures with IUPAC nomenclature


2,2,4-trimethylpentane

a)
b)
c)
d)
19.

Which is the structures with IUPAC nomenclature


2,2,4-trimethylpentane

a)
b)
c)
d)
20.

Which is the name of this compound?

a)

3-ethyl-2,2-dimethylhex-3-yne

b)

4-ethyl-5,5-methylhex-2-yne

c)

4-butylhex-2-yne

d)

4-ethyl-5,5-dimethylhex-2-yne

21.

Give the IUPAC name for this compound

a)

3-methyl-4-ethylhexane

b)

3-ethyl-4-methylhexane

c)

3-methyl-4-ethylheptane

d)

3-ethyl-4-methylheptane

22.

Name this molecule

a)

2-methyl-pent-1-yne-3-ene

b)

1-methyl-pent-1-yne-3-ene

c)

2-methyl-pent-1-ene-3-yne

d)

1-methyl-pent-1-ene-3-yne

23.
How many carbons are in the longest chain of the following molecule:
a)
11
b)
10
c)
9
d)
8
24.
Name the compound.
a)
nonene
b)
2,2-dimethyl-3-heptene
c)
1,1,5-trimethyl-2-hexene
d)
2,6-dimethyl-3-heptene
25.

Which reagent is needed to change CH3CH=CH2 to CH3CHClCH3

a)

Cl2 (aq)

b)

SOCl2

c)

PCl3

d)

HCl

26.

what is the IUPAC name of the following organic compound.

a)

2,3-dimethyl-4,4-diethyl heptane

b)

2,3-methyl-4,4-ethyl heptane

c)

4,4-ethyl-2,3-methyl heptane

d)

4,4-diethyl-2,3-dimethyl heptane

27.

Alkanes react with excess oxygen to form

a)

carbon dioxide and water

b)

salt and water

c)

carbon monoxide and soot

d)

metal hydroxide and hydrogen

28.

Possible products of INCOMPLETE combustion

a)

Carbon (C)

b)

Carbon Monoxide (CO)

c)

Carbon Dioxide (CO2)

d)

Water (H2O)

29.

If an alkene has 20 carbon atoms, how many hydrogen atoms will it have?

a)

20

b)

22

c)

40

d)

42

30.

What is the atomic number of carbon?

a)

12

b)

6

c)

5

d)

8

31.

Unsaturated molecules contain...

a)

A carbon to carbon double bond

b)

Only single bonds between carbon atoms

c)

A water molecule

d)

A hydroxyl group

32.

How many structural isomers are there for C4H10?

a)

1

b)

2

c)

3

d)

4

33.

What is the correct name for the following compound?

a)

3,4-dimethylheptane

b)

4-methyl-5-ethylhexane

c)

3-methyl-4-propylpentane

d)

4,5-dimethylheptane

34.

What is the correct name for the alkyne shown?

a)

butyne

b)

1-butyne

c)

2-butyne

d)

1-methyl-1-propyne

35.
The main intermolecular force of attraction between hydrocarbons is:
a)
covalent bonds
b)
hydrogen bonds
c)
dipole–dipole forces
d)
dispersion forces
36.
Compounds containing one or more benzene rings are called:
a)
alkanes
b)
alicyclic compounds
c)
aliphatic compounds
d)
aromatic compounds
37.
Which of the following undergoes addition reactions
a)
alkanes
b)
alkanes and alkenes
c)
alkanes and alkynes
d)
alkenes
38.

What is the name of this hydrocarbon?

a)

2 methyl 1 ethene

b)

2 methyl 1 propane

c)

2 ethyl 1 propene

d)

2 ethyl 1 butene

39.

What is the name of this hydrocarbon?

a)

4 ethyl 5,6 dimethyl heptane

b)

2,3 dimethyl 4 ethyl heptane

c)

4 ethyl 2,3 dimethyl heptane

d)

5 propyl hexane

40.
What is the general formula of the alkynes?
a)
CnH2n+1
b)
CnH2n+2
c)
CnH2n-1
d)
CnH2n-2
41.

Choose The correct name of the following compound:

a)

4,6-dimethyl-2-heptene.

b)

3,5-dimethyl-2-heptene.

c)

4,6-dimethyl-2-hexane.

d)

2,6-dimethyl-2-heptene.

42.

Choose the correct name of the following compound:

a)

2-ethyl-3-methylcyclopentane

b)

1-propyl-3-ethyllcycloheptane

c)

1-ethyl-3-methylcyclohexane

d)

4-ethyl-2-methylcyclohexane

43.

The name for this compound is

a)

propene

b)

propane

c)

propyne

d)

ethylene

44.
an aromatic compound is:
a)
a hydrocarbon with one or more benzene rings
b)
hydrocarbon with a double bond
c)
hydrocarbon with a triple bond
d)
organic compound with single bonds
45.

Name the following compound

a)

Benzene

b)

Benzol

c)

Phenyl

d)

Phenol

46.

The correct name for this is?

a)

1-chloro-3-bromobenzene

b)

3-bromo-1-chlorobenzene

c)

1-bromo-3-chlorobenzene

d)

1-bromo-5-chlorobenzne

e)

1-chloro-5-bromobenzene

47.

Which is the correct drawing of o-bromonitrobenzene?

a)
b)
c)
d)
48.

Which is the correct drawing of 1,3 -dibromo-2-nitrobenzene?

a)
b)
c)
d)
49.
How many delocalised electron are there for each benzene molecules?
a)
2
b)
3
c)
6
d)
12
50.

Which one of the following is the chemical formula for ethyl benzene?

a)

C6H5CHCH2

b)

C6H5CH2CH3

c)

C8H10

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