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Organic Chemistry: Hydrocarbons

Total questions: 42

Worksheet time: 42mins

Name
Class
Date
1.
How many carbon atoms are in propane
a)
1
b)
2
c)
3
d)
4
2.
If an alkane has 20 carbon atoms, how many hydrogen atoms will it have?
a)
20
b)
22
c)
40
d)
42
3.
Name this alkane
a)
Methane
b)
Ethane
c)
Propane
d)
Butane
4.
Name this alkane
a)
Methane
b)
Ethane
c)
Propane
d)
Butane
5.
The "ane" ending in "alkane" tells someone that they are dealing with _________-bonded carbons.
a)
single
b)
double
c)
triple
d)
quadruple
6.
Give the name of this compound...
C3H8
a)
Propene
b)
Butane
c)
Butene
d)
Propane
7.
The molecular formula for Heptane is
a)
C4H10
b)
C8H18
c)
C5H12
d)
C7H16
8.
General formula of Alkane is 
a)
CnH2n+2
b)
CnH2n
c)
CnH2n+1OH
d)
CnH2n+1COOH
9.
How many hydrogen atoms are in butane
a)
4
b)
6
c)
8
d)
10
10.
Hydrocarbons are compounds that contain
a)
Carbon, only
b)
Carbon and Hydrogen, only
c)
Carbon, Oxygen, and Hydrogen, only
d)
Carbon, Oxygen, Hydrogen, and Nitrogen, only
11.
Which one of the following is saturated?
a)
water
b)
C4H8
c)
C4H10
d)
C5H8
12.
Which of the following generally undergoes substitution reactions
a)
alkanes
b)
alkenes
c)
Alkanes and alkenes 
d)
algebras
13.
At which pipe: M or N are hydrocarbons with lower boiling points collected?
a)
M
b)
N
14.

Hydrocarbons burning is an example of what type of chemical reaction ?

a)

neutralisation

b)

endothermic

c)

addition

d)

exothermic

15.

C5H12 + Br2 --> C5H11Br + HBr

This reaction is called____________________.

a)

Substitution

b)

Addition

c)

Cracking

d)

Combustion

16.

name the group that has a single bond

a)

alkenes

b)

alcohols

c)

alkanes

d)

ethers

17.

molecules with double/tripple bond

a)

carbocilic acids

b)

alkynes

c)

unsaturated fats

d)

saturated fats

18.

the name of this compaund C4H10

a)

METHANE

b)

HEXENE

c)

BUTANOIC ACID

d)

BUTANE

19.

The group made up of alcohols and acids

a)

esters

b)

carbocilic acids

c)

ethers

d)

alkynes

20.

which compound is made up of carbons and hydrogen

a)

hydrocarbons

b)

aldehytes

c)

condensed structure

d)

alcohols

21.

molecule with the same molecular structure but different structural formula

a)

fats

b)

lipids

c)

fossil fuels

d)

isomers

22.

the MP and BP increases as the molecular structure increases

a)

hydrocarbons

b)

ethers

c)

ketones

23.

what determines the properties of hydrocarbons

a)

BP

b)

molecular structure

c)

MP

24.

Macromolecule that is made up of repeated structure called monomers

a)

protein

b)

amino acids

c)

polymer

25.

organic polymer can be divided into

a)

synthetic organic polymer

b)

natural organic polymer

c)

all of the above

26.

the type of reaction that occur in alkenes

a)

elimination

b)

substitution

c)

addition

27.

what are the outer most electrons called

a)

energy level

b)

valence

c)

valency

28.

which bond does carbon mostly form

a)

hydrogen bond

b)

dipole-dipole

c)

covalent bond

29.

which reaction that releases oxidising agents, heat and light

a)

substitution

b)

combustion

c)

addition

30.

give the IUPAC NAME OF THIS STRUCTURAL FORMULAR C6H14

a)

HAXANE

b)

HEXANOL

c)

HEXANOIC ACIT

31.
As the number of carbons increases in an homologous series the melting point generally...
a)
increase
b)
decrease
c)
stay the same
d)
varies
32.
Which of the following would have the highest melting point?
a)
C3H8
b)
C4H8
c)
C5H12
d)
C22H44
33.
Which of the following has the highest viscosity
a)
petrol 
b)
diesel
c)
biodiesel
d)
LPG
34.
Which of the following could contain a triple bond?
a)
C4H10
b)
C4H8
c)
C4H6
d)
C4H12
35.
Which one of the following is saturated?
a)
water
b)
C4H8
c)
C4H10
d)
C5H8
36.
Which of the following is more volatile?
a)
petrol
b)
diesel
c)
oil
d)
my temper
37.
Which of the following will react with Br2(l)
a)
hexene 
b)
cyclohexane
c)
hexane
d)
alkanes
38.
Which of the following undergoes addition reactions
a)
alkanes
b)
alkanes and alkenes
c)
alkanes and alkynes
d)
alkenes
39.
Which of the following generally undergoes substitution reactions
a)
alkanes
b)
alkenes
c)
Alkanes and alkenes 
d)
algebras
40.
Which of the following does not contain only carbon and hydrogen
a)
alkanes 
b)
alkenes
c)
alkynes
d)
alkanols
41.
When the ring on a Bunsen burner is closed during a combustion reaction , soot forms. Soot is?
a)
carbon dioxide
b)
carbon
c)
carbon monoxide
d)
burnt propane
42.
Which of the following has the highest boiling points
a)
alkanes 
b)
alkenes
c)
alkynes
d)
alkanols

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