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Worksheets

Chemistry of Hydrocarbon

Total questions: 166

Worksheet time: 2hrs 55mins

Name
Class
Date
1.

Organic chemistry involves compounds containing (a)  

2.

Alkenes are different to alkanes because they contain a ____________ ____________

(a)  

3.

Name the two products of complete combustion of a hydrocarbon

(a)  

4.

What is the name of the alkane shown here?

a)

Methane

b)

Ethane

c)

Propane

d)

Butane

5.
Name this alkane
a)
Methane
b)
Ethane
c)
Propane
d)
Butane
6.
Name the compound.
a)
hexane
b)
2,3-dimethylbutane
c)
ethylbutane
d)
2,2-dimethylbutane
7.
The following is an example of an
a)
Alkane
b)
Alkene
c)
Alkyne
8.

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

9.

Which step is this in the synthesis of chloroalkanes?

a)

Termination

b)

Initiation

c)

Propagation

d)

Position

10.
Name the compound.
a)
nonene
b)
2,2-dimethyl-3-heptene
c)
1,1,5-trimethyl-2-hexene
d)
2,6-dimethyl-3-heptene
11.

This is a region about the nucleus where the probability of finding the electrons is very high

a)

Pi bond

b)

Atomic orbital

c)

Sigma bond

d)

Hybrid orbital

12.

What is a hydrocarbon?

a)

Compounds made of carbon, oxygen and nitrogen.

b)

Compounds made of carbon, oxygen and phosphorus

c)

Compounds made only of carbon and hydrogen

13.

In order to show how the atoms are connected, structural formulas such as __________ , __________ and _________ structures are used.

a)

expanded, condensed, skeletal

b)

expanded, condensed, molecular

c)

hydrocarbon, expanded, skeletal

d)

molecular, condensed, skeletal

14.

Tertiary hydrogen connected to __________ carbon.

a)

tertiary

b)

primary

c)

secondary

d)

quarternary

15.

The alkanes are a homologous series.

What is the general formula of the alkanes?

a)

n carbon atoms, 2n hydrogen atoms

b)

2n carbon atoms, n hydrogen atoms

c)

n carbon atoms, n+2 hydrogen atoms

d)

n carbon atoms, 2n+2 hydrogen atoms

16.

Complete the formula for this alkene C (a)   H18

17.

Which bond is weaker and is more prone to chemical attacks?

a)

Pi bond

b)

Sigma bond

18.

Isomers are molecules that have the _________molecular formula (contain the same number of atoms) but ______ structurally (having different arrangement of the atoms in space).

a)

differ, differ

b)

same, differ

c)

same, same

d)

differ, same

19.

____________ groups are atoms, groups of atoms or bond that determine the characteristic of an organic compound.

a)

Aliphatic

b)

Aromatic

c)

Functional

d)

Hydrocarbon

20.

Which substances can be produced from crude oil?

a)

Metal alloys and glass

b)

Glass and concrete

c)

Limestone and steel

d)

Kerosene and polymers

21.

Complete the formula of this alkane C26H (a)  

22.
Which formula represents an unsaturated hydrocarbon?
a)
A
b)
B
c)
C
d)
D
23.

Compounds with different functional group but similar molecular formula can have _____________ group isomers.

a)

chain

b)

position

c)

functional

d)

optical

24.

Which type of hydrocarbon is shown above?

a)

Alkane

b)

Alkene

c)

Alkyne

d)

None of the above

25.
Name this alkane.
a)
propane
b)
octane
c)
hexane
d)
butane
26.

Which hydrocarbons will make bromine water clear?

a)

C2H6

b)

C4H8

c)

C12H24

d)

C7H16

27.

Why can carbon combine with itself to make substances that have very different properties? (ex. graphite and diamond).

a)

Because of carbon's 4 valence electrons it can form a variety of bonds with other carbons.

b)

Because carbon is polar it can combine in a variety of ways.

c)

Because carbon will either give or take 4 electrons so it can form various substances

d)

Because carbon forms cations it combines in various ways.

28.

Which type of hydrocarbon is shown above?

a)

Alkane

b)

Alkene

c)

Alkyne

d)

None of the above

29.

Is the chemistry of carbon.

a)

Inorganic Chemistry

b)

Organic Chemistry

c)

Analytical Chemistry

d)

Biochemistry

30.

What type of hydrocarbon is shown above?

a)

Alkane

b)

Alkene

c)

Alkyne

d)

None of the above

31.

Incomplete combustion occurs when there is not enough (a)  

32.

Only _________ molecules have optical isomers.

a)

achiral

b)

chiral

c)

hybrid

d)

hydrocarbon

33.

How many carbon atoms are in propane?

a)

1

b)

2

c)

3

d)

4

34.

Alkane molecules are made of which elements?

a)

Carbon and hydrogen

b)

Carbon, hydrogen and oxygen

c)

Carbon and oxygen

d)

Carbon, nitrogen and hydrogen

35.

All molecules of the alkane homologous series have which ending in their name?

a)

-ane

b)

-ene

c)

-anol

d)

-anoic acid

36.

As the number of carbons in an alkane the boiling point (a)  

37.

Alkanes are also known as

a)

Olefines

b)

Paraffins

c)

Oil

38.

____________ groups are atoms, groups of atoms or bond that determine the characteristic of an organic compound.

a)

Aliphatic

b)

Aromatic

c)

Functional

d)

Hydrocarbon

39.

What happens to the viscosity of hydrocarbons as the length of the molecule increases?

a)

Longer hydrocarbons are more viscous

b)

All hydrocarbons have the same viscosity

c)

Hydrocarbons aren’t viscous

d)

Shorter hydrocarbons are more viscous

40.

What is it about coal that can make it a contributing factor to acid rain?

a)

If the coal is burned at a high temperature, acid rain could form.

b)

If the coal contains too much hydrogen, acid rain could occur.

c)

If the coal isn't mined correctly, it could cause acid rain when burned.

d)

If the coal contains too much nitrogen or sulfur, acid rain could occur.

41.

Complete the formula for this alkane C13H (a)  

42.

Hydrocarbons that contain a delocalized ring of π-bonds such as benzene ring are called ___________ hydrocarbons.

a)

aromatic

b)

aliphatic

c)

organic

d)

cyclo

43.

What is the name of the double bonded compounds, which are unsaturated?

a)

Alkanes,

b)

Alkenes.

c)

Alkynes

d)

Alkones

44.

Hydrocarbons with shorter carbon chains are more flammable.

What does this make them useful for?

a)

Lubricants

b)

Fuels

c)

Plastics

d)

Feedstock

45.

Which is the best description of fractional distillation?

a)

Breaking down longer hydrocarbon chains into smaller ones that are more useful

b)

Separating the hydrocarbons in crude oil into fractions, with each fraction containing molecules with a similar number of carbon atoms

c)

Pumping crude oil out from under the sea

d)

Ensuring resources are used to meet the needs of current generations without compromising the needs of future generations

46.

Name this hydrocarbon

(a)  

47.

There is no ___________ hydrogen due to limited bonding of carbon atom to just four.

a)

primary

b)

secondary

c)

quaternary

d)

tertiary

48.

Which statement is correct?

a)

All organic compounds contain carbon

b)

All organic compounds contain hydrogen

49.

In organic chemistry, molecular and ____________ formulas were used to express what a particular molecule consists of.

a)

structural

b)

organic

c)

chemical

d)

physical

50.
Give the name of this compound...
C3H8
a)
Propene
b)
Butyne
c)
Butene
d)
Propane
51.

As the number of carbons in an alkane the combustibility (a)  

52.

What is a hydrocarbon?

a)

A compound composed of carbon and water

b)

A compound composed of carbon and hydrogen

c)

A compound composed of carbon and oxygen

d)

A compound composed of carbon and nitrogen

53.

What chemical reaction is this?

a)

Photosynthesis

b)

Cellular respiration

c)

Enzyme production

d)

Vitamin synthesis

54.

Which two elements do all organic compounds contain?

a)

Carbon and hydrogen

b)

Carbon and oxygen

c)

Oxygen and hydrogen

d)

Carbon and nitrogen

55.

What happens to carbon and hydrogen during combustion reactions?

a)

They are reduced

b)

They are oxidised

c)

They are cracked

d)

They are distilled

56.

Name the smallest alkene

(a)  

57.

The structure of graphite is most like which of the following?

a)

A soccer ball

b)

A cardboard box

c)

A sheet of paper

d)

A glass of water

58.

Why is methane used as a fuel?

a)

It burns and releases energy (Exothermic reaction)

b)

It is a gas

c)

It is odourless

d)

It has a low boiling point

59.

__________ series is a series of compounds with same functional group differing from the successive member by CH2.

a)

Heterologous

b)

Homologous

c)

Hydrocarbon

d)

Group

60.

Aliphatic hydrocarbons consist only single bonds, and so are called ____________ hydrocarbons.

a)

unsaturated

b)

saturated

c)

aromatic

d)

chain

61.

Name the alkane with 4 carbons

(a)  

62.

What is the name of the triple bonded compounds which are unsaturated?

a)

Alkanes

b)

Alkenes

c)

Alkynes

d)

Alkones

63.

Three types of constitutional isomers are _______ isomers, _________ isomers and ___________ isomers.

a)

chain, position, functional group

b)

chain, optical, functional group

c)

stereoisomers, position, functional group

d)

chain, position, enantiomers

64.

The prefix ET is used for

a)

2 carbons

b)

1 carbon

c)

6 carbons

65.

Carbon has a valency of +4 because of its

a)

sp3 hybridization

b)

sp2 hybridization

c)

sp hybridization

66.

How many carbon atoms and hydrogen atoms are there in propane?

a)

2 carbon atoms, 6 hydrogen atoms

b)

4 carbon atoms, 8 hydrogen atoms

c)

3 carbon atoms, 8 hydrogen atoms

d)

3 carbon atoms, 6 hydrogen atoms

67.
Which formula represents a saturated hydrocarbon?
a)
A
b)
B
c)
C
d)
D
68.

Which of the following is a flammable solid that can be used as a fuel for electricity generation or heating?

a)

Methane

b)

Petroleum

c)

Natural gas

d)

Coal

69.

Crude oil is finite because we use it before more can be formed.

How was crude oil formed?

a)

From the remains of an ancient biomass, consisting mainly of plankton, that was buried in mud

b)

Mostly from the remains of dinosaur bones

c)

By fractional distillation

d)

By cracking

70.

What is the first stage in the fractional distillation of crude oil?

a)

Heating, to vaporise the hydrocarbons

b)

Heating, to make it a hot liquid

c)

Cooling it

d)

Separating the fractions

71.

The prefix PROP is used for

a)

2 carbons

b)

3 carbons

c)

4 carbons

72.

The prefix BUT is used for

a)

4 carbons

b)

5 carbons

c)

2 carbons

73.

Which is the correct general formula for the alkanes?

a)

CnH2n+2

b)

CnH2n

c)

CnH2n+1OH

d)

CnH2n+1COOH

74.

What is the name of the alkane with two carbon atoms?

a)

Ethane

b)

Methane

c)

Butane

d)

Propane

75.

Organic chemistry is the study of

a)

compounds that carbon can make, in all its forms

b)

compounds of living beings

c)

mineral compounds

76.

Which of the following hydrocarbons contains only single bonds?

a)

Alkanes

b)

Alkenes

c)

Alkynes

77.

Aliphatic hydrocarbons consist only single bonds, and so are called ____________ hydrocarbons.

a)

unsaturated

b)

saturated

c)

aromatic

d)

chain

78.

Two main types of isomers are the __________ (structural) isomers and ____________.

a)

stereoisomers, optical

b)

constitutional, optical

c)

constitutional, stereoisomers

d)

enantiomers, stereoisomers

79.

Carbon atoms can be classified by the _____________ of other carbon atoms that are directly attached to it.

a)

number

b)

type

c)

structure

d)

isomer

80.

What happens to the boiling point and flammability of hydrocarbons as the length of the molecules increases?

a)

Longer hydrocarbons have lower boiling points and are less flammable

b)

Longer hydrocarbons have higher boiling points and are more flammable

c)

Longer hydrocarbons have lower boiling points and are more flammable

d)

Longer hydrocarbons have higher boiling points and are less flammable

81.
What is the organic family for propene (propylene)?  
a)
alkanes
b)
alkenes
c)
alkynes
d)
aromatics
82.

The carbon atom with the four different groups attached which causes the lack of symmetry is described as a _________ centre.

a)

chiral

b)

achiral

c)

carbon

d)

atom

83.

Name this molecule

C3H6

a)

Propane

b)

Propene

c)

Butene

d)

Butane

84.
Which formula represents a saturated hydrocarbon?
a)
A
b)
B
c)
C
d)
D
85.

Put the two processes used in fractional distillation in the correct order.

a)

Evaporating and then melting

b)

Evaporating and then condensing

c)

Condensing and then evaporating

d)

Melting and then condensing

86.

Cellulose is made of glucopyranose subunits that are repeated hundreds of times. Knowing this about the structure of cellulose, it is most likely a(n)...

a)

Alkane

b)

Petroleum product

c)

Polymer

d)

Straight carbon chain

87.

According to their carbon chain, hydrocarbons can be classified in:

a)

high and low hydrocarbons

b)

single, double and triple bonded hydrocarbons

c)

linear, branched and cyclic hydrocarbons

88.
What type of molecule is it:
a)
alkene
b)
alkyne
c)
alkane
d)
amino acid
89.

What the name of the single bond compounds that formed saturated hydrocarbons?

a)

Alkanes

b)

Alkenes

c)

Alkynes

d)

Alkones

90.

Carbon is a very versatile element because

a)

it has a low atomic and mass number

b)

it can bond with almost all elements including itself

c)

it has a valency of +4

91.

_____________ isomers occur when the types, number and bonds (connectivity) of the atoms are the same, but have a restricted rotation somewhere in a molecule. The common example is the double bond.

a)

Optical

b)

Chain

c)

Geometric

d)

Position

92.

This is an example of a

a)

single-bonded hydrocarbon

b)

double-bonded hydrocarbon

c)

triple-bonded hydrocarbon

93.
How many carbons are in the longest chain of the following molecule:
a)
11
b)
10
c)
9
d)
8
94.

Which of the following hydrocarbons contains at least one double bond?

a)

Alkanes

b)

Alkenes

c)

Alkynes

95.

Give IUPAC nomenclature for this compound

a)

2,7-dimethyl-5-ethyloctane

b)

5-ethyl-2,7-dimethyloctane

c)

2,7-dimethyl-3-ethyloctane

d)

4-ethyl-2,7-dimethyloctane

96.

What chemicals are found in crude oil?

a)

Methane only

b)

A mixture of compounds, which are mostly hydrocarbons

c)

A mixture of elements

d)

Carbon only

97.

What property allows us to separate hydrocarbons during fractional distillation?

a)

Different hydrocarbons have different boiling points

b)

Different hydrocarbons have different melting points

c)

Different hydrocarbons are different colours

d)

Some hydrocarbons have a positive charge and others have a negative charge

98.

This type of bond allows free rotation of the parts of the molecule with respect to each other

a)

Sigma bond

b)

Pi bond

c)

Covalent bond

d)

Electron bond

99.

Organic compounds made only of the elements carbon and hydrogen are called...

a)

Hydrocarbons

b)

Carbohydrogens

c)

Carbohydrates

d)

Hydrocarbonates

100.

What compounds are produced in the complete combustion of hydrocarbons?

a)

Carbon dioxide and water

b)

Carbon monoxide and water

c)

Carbon dioxide and nitrogen

d)

Water and nitrogen

101.
Which of the following elements is required in an organic compound?
a)
nitrogen
b)
oxygen
c)
carbon
d)
sodium
102.

Why, in terms of column temperature, do the fractions condense at different levels in the fractionating column?

a)

The column is hotter at the bottom and cooler at the top

b)

The column is cooler at the bottom and hotter at the top

c)

All the column is at the same temperature

d)

The column has a hotter section halfway up

103.
Is NaCl (table salt) a Organic or Inorganic Compound?
a)
Inorganic
b)
Organic
104.

Two ______________ are non-superimposable mirror image of one another (chiral).

a)

enantiomer

b)

isomer

c)

non-enantiomer

d)

geometric

105.

__________ structural formula are written without showing all the individual bonds. In a condensed structure, each central atom is shown together with the atoms that are bonded to it

a)

Molecular

b)

Condensed

c)

Expanded

d)

Skeletal

106.

What is the definition of a hydrocarbon?

a)

A compound made of hydrogen and carbon only

b)

A compound that includes hydrogen or carbon

c)

A mixture that includes hydrogen and carbon

d)

A mixture of hydrogen and carbon only

107.
Is this hydrocarbon saturated or unsaturated? 
a)
saturated
b)
unsaturated
108.

How many carbon atoms are in propane?

a)

1

b)

2

c)

3

d)

4

109.

Which type of bonding is present within organic molecules?

a)

Covalent bond

b)

Ionic bond

c)

Metallic bond

d)

Hydrogen bond

110.

For alkanes, only ________ isomers is possible.

a)

functional group

b)

chain

c)

position

d)

optical

111.

This is an example of a

a)

Linear hydrocarbon

b)

Branched hydrocarbon

c)

Cyclic hydrocarbon

112.
Explain, in terms of carbon-carbon bonds, why this hydrocarbon is saturated.
a)
The molecule has the maximum amount of hydrogen it can have.
b)
It is an alkane so it is saturated.
c)
There are only single bonds between the hydrogen and carbon.
d)
There are only single bonds between the carbon.
113.

Which of the following hydrocarbons contains at least one triple bond?

a)

Alkanes

b)

Alkenes

c)

Alkynes

114.

What is the name of the process in which one orbital "S" and three orbitals "P" combined to form new orbitals?

a)

Combining

b)

Joining

c)

Hybridization

d)

Hydrozation

115.

To test for alkenes we can add a hydrocarbon to ________________ water

a)

flourine

b)

chlorine

c)

bromine

d)

iodine

116.
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
117.

What chemical reaction is this?

a)

Photosynthesis

b)

Cellular respiration

c)

Enzyme production

d)

Vitamin synthesis

118.
In organic chemistry, dashes separate....
a)
numbers
b)
names from numbers
119.
Which analysis is needed to determine type of elements present in given sample?
a)
Quantitative Analysis
b)
Simple Analysis
c)
Qualitatif Analysis
d)
Stoichiometric Analysis
120.
The molecular formula for Heptane is
a)
C4H10
b)
C8H18
c)
C5H12
d)
C7H16
121.

Which is the structures with IUPAC nomenclature


2,2,4-trimethylpentane

a)
b)
c)
d)
122.
How many carbon atoms are in butane?
a)
1
b)
2
c)
3
d)
4
123.
If an alkane has 20 carbon atoms, how many hydrogen atoms will it have?
a)
20
b)
22
c)
40
d)
42
124.
Which of the following compounds is not organic?
a)
CH4
b)
CO
c)
C2H2
d)
CCl4
125.
What is the general formula for saturated hydrocarbons?
a)
CnH2n
b)
CnHn+1
c)
CnH2n+1
d)
CnH2n+2
126.

Which correctly represents an incomplete combustion of pentane?

a)

C5H12 + 8O2 ⟶ 5CO2 + 6H2O

b)

C5H12 + 8O2 ⟶ 4CO + CO2 + 6H2O

c)

C5H12 + 6O2 ⟶ 4CO + CO2 + 6H2O

d)

C5H12 + 5O2 ⟶ 4CO + CO2 + 4H2O + 2H2

127.

Which of the following has the highest boiling point?

a)

heptane

b)

pentane

c)

nonane

128.
What are the Aliphatic Hydrocarbons?
a)
Open chained carbon hydrogen organic compounds
b)
Closed chained carbon hydrogen organic compounds
c)
Straight chained carbon hydrogen and some other elements organic compounds
d)
Closed chained carbon hydrogen and some other elements organic compounds
129.
Which is an unsaturated hydrocarbon?
a)
C6H12
b)
C7H16
c)
C6H14
130.
What is the exam definition of saturated?
a)
No single bonds
b)
Contains a double bond
c)
No single bonds, all double bonds
d)
No double bonds, all single bonds
131.

How many chemical bonds can each carbon atom form?

a)

1

b)

2

c)

3

d)

4

132.
Which is a saturated hydrocarbon?
a)
C5H12
b)
C5H10
c)
C5H8
133.
Upon combustion, a hydrocarbon produces 29,10g CO2 and 11,58g H2O. What is the empirical formula of hydrocarbon? (C:12g/mol, H:1g/mol)
a)
CH4
b)
CH3
c)
CH2
d)
CH
134.
The molecular formula for Heptane is
a)
C4H10
b)
C8H18
c)
C5H12
d)
C7H16
135.
Why do alkane not dissolve in water?
a)
they are less dense than water
b)
they have low melting points
c)
they are non-polar compounds 
d)
they are chemically less reactive
136.

In organic chemistry, commas separate....

a)

numbers

b)

names from numbers

137.
Unsaturated hydrocarbons contain at least one double or triple bond.
a)
True
b)
False
138.

Which of the following statements concerning the reaction of methane with bromine is/are correct?

(1) It is an addition reaction.

(2) It is a substitution reaction.

(3) A similar reaction will occur if propane is used instead of methane.

a)

(1) only

b)

(2) only

c)

(1) and (3) only

d)

(2) and (3) only

139.
Which molecular chemical bond found commonly in organic compounds?
a)
Hydrogen Bond
b)
Ionic Bond
c)
Van Der Waals Force 
d)
Covalent Bond
140.
Which organic compound gives silver mirror reaction with Tollens Reagent and is source of energy for living things?
a)
Ethanol
b)
Methane
c)
Glucose
d)
Glycerine
141.
What is producing the derivatives of hydrocarbons?
a)
Halogens added to CH chain
b)
Some non-metals added to CH chain
c)
Functional groups added to CH chain
d)
Branches added to CH chain
142.

Which equation represents a termination step?

a)
b)
c)
d)
143.
What is a hydrocarbon that contains only single bonds called? 
a)
organic  
b)
saturated
c)
unsaturated
d)
fully bonded
144.
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
145.

The boiling points of alkane molecules increase as their molecular sizes increase.

a)

True

b)

False

146.

The word polymer is derived from ________

a)

Latin

b)

Greek

c)

French

d)

Hebrew

147.

What is the classification of polymer based on monomer chain

a)

Linear, branched , crosslinked

b)

Homomer, co-polymer

c)

Thermosetting, thermoplastic,elastomers

d)

Natural, synthetic

148.
How many carbons are in the longest chain of the following molecule:
a)
11
b)
10
c)
9
d)
8
149.

What are the classification of polymer based on molecular forces

a)

Homomer, co-polymer

b)

Thermosetting, thermoplastic, elastomers

c)

Addition condensation

d)

Linear , branched, crosslinked

150.
How many double bonds in the compound?
a)
1
b)
6
c)
12
d)
5
151.

Which of the following is a flammable solid that can be used as a fuel for electricity generation or heating?

a)

Methane

b)

Petroleum

c)

Natural gas

d)

Coal

152.

What is this process called?

a)

Distillation

b)

Fractional Distillation

c)

Reverse Distillation

d)

Destructive Distillation

153.

What property allows us to separate hydrocarbons during fractional distillation?

a)

Different hydrocarbons have different boiling points

b)

Different hydrocarbons have different melting points

c)

Different hydrocarbons are different colours

d)

Some hydrocarbons have a positive charge and others have a negative charge

154.

This process is based of the fact that all compounds being separated have

a)

A boiling point

b)

Same boiling points

c)

Different boiling points

d)

No boiling points

155.

What chemicals are found in crude oil?

a)

Methane only

b)

A mixture of compounds, which are mostly hydrocarbons

c)

A mixture of elements

d)

Carbon only

156.
Methyl has the molecular formula
a)
CH4
b)
CH3
c)
CH
d)
CH2
157.
The longer the hydrocarbon, the _______ the boiling point
a)
Lower
b)
Higher
158.
Saturated hydrocarbons contain single bonds and double bonds
a)
True
b)
False
159.

What can you tell about methane (CH4) from its molecular formula?

a)

It contains four carbon atoms.

b)

It contains one hydrogen atom.

c)

It contains four hydrogen atoms.

d)

It forms groups of four molecules.

160.
Which type of formulas represents only combination ratio of the constituent atoms?
a)
Structural Formula
b)
Empirical Formula
c)
Molecular Formula
d)
Condense Formula
161.
What is formed when an organic compound is bunt?
a)
Carbon dioxide
b)
Hydrogen peroxide
c)
Carbon Sulfide
d)
Hydrogen Sulfide
162.
How many carbon atoms are in ethane?
a)
1
b)
2
c)
3
d)
4
163.
Organic compounds are compounds contain ______________.
a)
O
b)
C
c)
N
d)
S
164.
Using combustion reaction of hydrocarbon, empirical formula of hydrocarbon is found as CH2O . If the molar mass of hydrocarbon is 180g/mol what is the molecular formula of the hydrocarbon ? (C:12g/mol, H:1g/mol, O:16g/mol)
a)
C12H24O12
b)
C8H16O8
c)
C6H12O6
d)
C3H6O3
165.
Which is an unsaturated hydrocarbon?
a)
C2H6
b)
C3H8
c)
C4H8
166.
Why do alkane not dissolve in water?
a)
they are less dense than water
b)
they have low melting points
c)
they are non-polar compounds 
d)
they are chemically less reactive

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7th Grade - University