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Introduction to fundamental concepts of organic chemistry

Total questions: 149

Worksheet time: 2hrs 43mins

Name
Class
Date
1.

During the bromination of methane, the free radical CH30 is generated. A possible terminating step of this reaction is the formation of C2H6 by the combination of 2 free radicals. What could be produced in a terminating step during the bromination of propane

a)
b)
c)
2.
a)

A

b)

B

c)

C

d)

D

3.

Which molecules would be present in the mixture produced by the photochemical chlorination of methane ?


1) Hydrogen

2) Hydrogen Chloride

3) dichloromethane

a)

A

b)

B

c)

C

d)

D

4.

Meets bonding requirement for CARBON atoms, YES or NO?

Three single bonds and a triple bond

a)

YES

b)

NO

5.

Formation of a single product from two reactant molecules is known as

a)

addition reaction

b)

substitution reaction

c)

elimination reaction

d)

oxidation reaction

6.

TRUE or FALSE.

All organic and inorganic compounds contain the element Carbon.

a)

TRUE

b)

FALSE

7.

The given structure is an example of ...

a)

Expanded structure

b)

Condensed structure

c)

Skeletal structure

8.

What is a functional group?

a)

Atoms or group of atoms that give specific characteristics to a molecule

b)

Group of molecules that make up a group of atoms

c)

Group of molecules that give specific characteristics to an atom

d)

Group of atoms that give specific characteristics to an element

9.

Which of these always applies to a nucleophile

a)

A

b)

B

c)

C

d)

D

10.

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

a)

Alkanes,

b)

Alkenes.

c)

Alkynes

d)

Alkones

11.

Which reaction is not an electrophilic addition ?

a)

A

b)

B

c)

C

d)

D

12.

Which of the following is a HYDROCARBON DERIVATIVE?

a)
b)
c)
d)
13.

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

a)

stereoisomers, optical

b)

constitutional, optical

c)

constitutional, stereoisomers

d)

enantiomers, stereoisomers

14.

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

a)

Aliphatic

b)

Aromatic

c)

Functional

d)

Hydrocarbon

15.

How many carbon atoms are in propane?

a)

1

b)

2

c)

3

d)

4

16.

Which pair of homologous series have the same C:H ratio in their general formula


1) Aldehydes and Ketones

2) Carboxylic acids and esters

3) Alkenes and Ketones

a)

A

b)

B

c)

C

d)

D

17.

What is the name of the alkane shown here?

a)

Methane

b)

Ethane

c)

Propane

d)

Butane

18.

Classify the compound based on the functional group present.

a)

Ether

b)

Ketone

c)

Ester

d)

Carboxylic acid

19.

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

a)

Pi bond

b)

Sigma bond

20.

What is the condensed formula of this structure?

a)

CH3CH2CH2OH

b)

CH3COCH3

c)

CH3CH2CHO

d)

CH3OCH2CH3

21.

Which of the following is a unique nature of carbon? (Multiple Selection Question)

a)

Forms 4 strong covalent bonds

b)

It can form only one type of bond

c)

It has the ability to form stable bonds with itself

d)

It can form multiple bonds

22.

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

23.

A reaction between chlorine and propane in UV light produces 2 isomeric monochloropropanes, C3H7Cl, as products. Which information about this reaction is correct ?

a)

A

b)

B

c)

C

d)

D

24.

Meets bonding requirement for CARBON atoms, YES or NO?

Four single bonds

a)

YES

b)

NO

25.

TRUE or FALSE.

Organic Chemistry is the study of chemical compounds found in living organisms alone.

a)

TRUE

b)

FALSE

26.

If the given structure is converted to condensed structure, which will be its correct version?

a)

CH3CH2CH2CH2CH2CH3

b)

CH3(CH2)4CH3

c)

C6H14

d)

(CH3)2(CH2)4

27.
a)

A

b)

B

c)

C

d)

D

28.

Carbon has _____ valence electrons.

a)

2

b)

4

c)

6

d)

8

29.

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

30.

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

31.

If the given structure is converted to condensed structure, which will be its correct version?

a)

CH3CH2CH2CH2CH2CH3

b)

CH3(CH2)4CH3

c)

C6H14

d)

(CH3)2(CH2)4

32.

Which type of bonding is present within organic molecules?

a)

Covalent bond

b)

Ionic bond

c)

Metallic bond

d)

Hydrogen bond

33.

Which of the following is NOT true about nucleophiles?

a)

donates an electron pair to an electrophile to form a chemical bond

b)

all molecules or ions with a free pair of electrons or at least one pi bond can act as nucleophiles

c)

nucleophile are Lewis acids by definition

d)

a nucleophile becomes attracted to a full or partial positive charge

34.

Which of the following is a HETEROATOM?

a)
b)
c)
d)
35.

Meets bonding requirement for CARBON atoms, YES or NO?

A double bond and a triple bond

a)

YES

b)

NO

36.

Covalent bonds can break through

a)

Homolytic fission

b)

Homolytic fusion

c)

Heterolytic fission

d)

Heterolytic fusion

37.

How many single covalent bonds does benzene (C6H6) molecule have?

a)

3

b)

6

c)

9

d)

12

38.
a)

A

b)

B

c)

C

d)

D

39.

Meets bonding requirement for CARBON atoms, YES or NO?

Two single bonds and a double bond

a)

YES

b)

NO

40.
a)

A

b)

B

c)

C

d)

D

41.

Two optical isomers have the same

a)

Empirical formula

b)

Structural formula

c)

Molecular formula

42.

Meets bonding requirement for CARBON atoms, YES or NO?

Three single bonds and a double bond

a)

YES

b)

NO

43.

Is the chemistry of carbon.

a)

Inorganic Chemistry

b)

Organic Chemistry

c)

Analytical Chemistry

d)

Biochemistry

44.
Name this alkane
a)
Methane
b)
Ethane
c)
Propane
d)
Butane
45.

How many hydrogens are missing from this extended structural formula?

a)

6

b)

7

c)

8

d)

9

46.
a)

A

b)

B

c)

C

d)

D

47.

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

a)

Hydrocarbons

b)

Carbohydrogens

c)

Carbohydrates

d)

Hydrocarbonates

48.

How many single covalent bonds does benzene (C6H6) molecule have?

a)

3

b)

6

c)

9

d)

12

49.

Meets bonding requirement for CARBON atoms, YES or NO?

Two double bonds and two single bonds

a)

YES

b)

NO

50.

The formula CH3 can represent an anion, a cation or a free radical. Species with molecular formula CH3 can act as an electrophile, a free radical or a nucleophile depending on the number of outer shell electrons on the central carbon atom. How many outer shell electrons must be present for CH3 to act in these different ways ?

a)

A

b)

B

c)

C

d)

D

51.

All of these structure formulas are correct, except for ___?

a)

a.

b)

b.

c)

c.

d)

d.

52.

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

53.
a)

A

b)

B

c)

C

d)

D

54.

TRUE or FALSE.

All organic compounds contain the element Carbon.

a)

TRUE

b)

FALSE

55.
a)

A

b)

B

c)

C

d)

D

56.
a)

A

b)

B

c)

C

d)

D

57.

Which of the following is an UNSATURATED HYDROCARBON?

a)
b)
58.

Which two elements do all organic compounds contain?

a)

Carbon and hydrogen

b)

Carbon and oxygen

c)

Oxygen and hydrogen

d)

Carbon and nitrogen

59.
a)

A

b)

B

c)

C

d)

D

60.

What is the condensed formula of this structure?

a)

CH3CH2CH2OH

b)

CH3COCH3

c)

CH3CH2CHO

d)

CH3OCH2CH3

61.

Meets bonding requirement for CARBON atoms, YES or NO?

Two double bonds

a)

YES

b)

NO

62.

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

a)

Alkanes

b)

Alkenes

c)

Alkynes

d)

Alkones

63.
a)

A

b)

B

c)

C

d)

D

64.

How many hydrogens are missing from this extended structural formula?

a)

6

b)

7

c)

8

d)

9

65.

What is the condensed formula of this structure?

a)

CH3CH2CH2OH

b)

CH3COCH3

c)

CH3CH2CHO

d)

CH3OCH2CH3

66.

Which type of bonding is present within organic molecules?

a)

Covalent bond

b)

Ionic bond

c)

Metallic bond

d)

Hydrogen bond

67.

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

a)

unsaturated

b)

saturated

c)

aromatic

d)

chain

68.

Which one of the following characteristics is not correct for all of the members of the same homologous series?

a)

Same general formula

b)

Similar chemical properties, i.e. undergo the same reactions

c)

Varying physical properties, i.e. change in a predictable way

d)

Different functional group

69.

What is the condensed formula of this structure?

a)

CH3CH2CH2OH

b)

CH3COCH3

c)

CH3CH2CHO

d)

CH3OCH2CH3

70.

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

71.

The given structure is an example of ...

a)

Expanded structure

b)

Condensed structure

c)

Skeletal structure

72.
Name this alkane
a)
Methane
b)
Ethane
c)
Propane
d)
Butane
73.

TRUE or FALSE.

All organic compounds are obtained from living organisms or "organic materials" while all inorganic compounds are obtained from earth's mineral constituents or "inorganic materials".

a)

TRUE

b)

FALSE

74.

Which diagram gives the skeletal formula of

2-chloropentan-3-ol ?

a)

A

b)

B

c)

C

d)

D

75.

Meets bonding requirement for CARBON atoms, YES or NO?

A single bond and two double bonds

a)

YES

b)

NO

76.

__________ 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

77.

What kind of molecule is this?

a)

alkane

b)

alkene

c)

alkyne

d)

cycloalkane

78.

Classify the compound based on the functional group present.

a)

Ether

b)

Ketone

c)

Ester

d)

Carboxylic acid

79.

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

a)

Aliphatic

b)

Aromatic

c)

Functional

d)

Hydrocarbon

80.

Which of the following statement is INCORRECT about electrophiles?

a)

Electrophiles are positively charged or neutral species having vacant orbitals

b)

The electrophiles are attacked by the most electron-populated part of one nucleophile

c)

Electrophiles are Lewis base

81.

Which of the two is an Organic Compound?

a)
b)
82.

Which statement is correct?

a)

All organic compounds contain carbon

b)

All organic compounds contain hydrogen

83.

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

a)

Alkanes

b)

Alkenes

c)

Alkynes

d)

Alkones

84.
At which pipe: M or N are hydrocarbons with lower boiling points collected?
a)
M
b)
N
85.

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

86.

How to determine that a molecule exhibit cis-trans isomerism?

a)

Restricted rotation in a carbon-carbon single bond of alkenes

b)

Each carbon of a site of restricted rotation has 2 different atoms or groups attached to it

c)

Exist in cyclic compouds only

d)

Similar chemical properties

87.

What is the molecular formula for structure showed?

a)

C8H18

b)

C3H3

c)

C8H3

d)

C3H2(CH3)3

88.

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

a)

-ane

b)

-ene

c)

-anol

d)

-anoic acid

89.

Which of these molecules has a triple covalent bond?

a)

CH4

b)

C2H6

c)

C2H4

d)

C2H2

90.

What is the molecular formula for structure showed?

a)

C8H18

b)

C3H3

c)

C8H3

d)

C3H2(CH3)3

91.
a)

A

b)

B

c)

C

d)

D

92.

Which is the correct general formula for the alkanes?

a)

CnH2n+2

b)

CnH2n

c)

CnH2n+1OH

d)

CnH2n+1COOH

93.

Classify the compound based on the functional group present.

a)

Ketone

b)

Carboxylic acid

c)

Ester

d)

Ether

94.

Which two elements do all organic compounds contain?

a)

Carbon and hydrogen

b)

Carbon and oxygen

c)

Oxygen and hydrogen

d)

Carbon and nitrogen

95.

Which statement best defines chain isomerism?

a)

Existance of chemical compounds with same molecular formula

b)

Different ways the same number of carbons are connected which is either straight or branched

c)

Have mirror image of each other

d)

Similar chemical properties with different physical properties such as solubility

96.

Formation of a single product from two reactant molecules is known as

a)

addition reaction

b)

substitution reaction

c)

elimination reaction

d)

oxidation reaction

97.
Which type of formulas represents only combination ratio of the constituent atoms?
a)
Structural Formula
b)
Empirical Formula
c)
Molecular Formula
d)
Condense Formula
98.
If an alkane has 20 carbon atoms, how many hydrogen atoms will it have?
a)
20
b)
22
c)
40
d)
42
99.
Which one of the following is saturated?
a)
water
b)
C4H8
c)
C4H10
d)
C5H8
100.

Isomerism that arises out of the difference in spatial arrangement of atoms or groups about the doubly bonded carbon atoms are called?

a)

Structural Isomerism

b)

Stereoisomerism

c)

Geometrical Isomerism

d)

Optical Isomerism

101.
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
102.
What is organic chemistry?
a)
chemistry relating to biological organisms
b)
chemistry involving carbon 
c)
chemistry involving micro-organisms
d)
chemistry involving oxygen
103.

molecules with double/tripple bond

a)

carbocilic acids

b)

alkynes

c)

unsaturated fats

d)

saturated fats

104.
Which molecular chemical bond found commonly in organic compounds?
a)
Hydrogen Bond
b)
Ionic Bond
c)
Van Der Waals Force 
d)
Covalent Bond
105.

Which of the following statement is INCORRECT about electrophiles?

a)

Electrophiles are positively charged or neutral species having vacant orbitals

b)

The electrophiles are attacked by the most electron-populated part of one nucleophile

c)

Electrophiles are Lewis base

106.

Which of the following molecules exhibit geometrical isomerism?

a)

CH2=CHCH3

b)

C6H5CH=CHC6H5

c)

(CH3)2C=CHCH3

d)

CH3CH2N=OH

107.

the name of this compaund C4H10

a)

METHANE

b)

HEXENE

c)

BUTANOIC ACID

d)

BUTANE

108.
The "ane" ending in "alkane" tells someone that they are dealing with _________-bonded carbons.
a)
single
b)
double
c)
triple
d)
quadruple
109.
Which of the following generally undergoes substitution reactions
a)
alkanes
b)
alkenes
c)
Alkanes and alkenes 
d)
algebras
110.

Which of the following is NOT true about nucleophiles?

a)

donates an electron pair to an electrophile to form a chemical bond

b)

all molecules or ions with a free pair of electrons or at least one pi bond can act as nucleophiles

c)

nucleophile are Lewis acids by definition

d)

a nucleophile becomes attracted to a full or partial positive charge

111.

name the group that has a single bond

a)

alkenes

b)

alcohols

c)

alkanes

d)

ethers

112.
The molecular formula for Heptane is
a)
C4H10
b)
C8H18
c)
C5H12
d)
C7H16
113.

Which among the following is not a class of organic compound?

a)

Carbonyl compound

b)

Nitro compound

c)

Amides

d)

Electro compounds

114.

molecule with the same molecular structure but different structural formula

a)

fats

b)

lipids

c)

fossil fuels

d)

isomers

115.
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
116.

give the IUPAC NAME OF THIS STRUCTURAL FORMULAR C6H14

a)

HAXANE

b)

HEXANOL

c)

HEXANOIC ACIT

117.

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

a)

neutralisation

b)

endothermic

c)

addition

d)

exothermic

118.

Choose the incorrect option regarding isomerism:

a)

They differ in both physical and chemical properties

b)

They have different molecular formula

c)

There are two types of isomerism : Structural and Stereoisomerism

d)

Geometric and optical isomerism are two types of stereoisomerism

119.

Which of the following cannot react as a nucleophile?

a)

CH3NH2

b)

(CH3)2NH

c)

(CH3)3N

d)

(CH3)4N+

120.

Bromine reacts with ethene to form 1, 2-dibromoethane.

What is the correct description of the organic intermediate in this reaction ?

a)

It has a negative charge

b)

It is a free radical

c)

It is a nucleophile

d)

It is an electrophile

121.

organic polymer can be divided into

a)

synthetic organic polymer

b)

natural organic polymer

c)

all of the above

122.

Chlorination of alkanes is an example of

a)

Elimination reaction

b)

Free radical substitution reaction

c)

Nucleophilic substitution reaction

d)

Electrophilic addition reaction

123.

General formula for amines is

a)

R-CH2

b)

R2CH

c)

R-NH2

d)

R-COOH

124.

which bond does carbon mostly form

a)

hydrogen bond

b)

dipole-dipole

c)

covalent bond

125.

C5H12 + Br2 --> C5H11Br + HBr

This reaction is called____________________.

a)

Substitution

b)

Addition

c)

Cracking

d)

Combustion

126.

The group made up of alcohols and acids

a)

esters

b)

carbocilic acids

c)

ethers

d)

alkynes

127.
Give the name of this compound...
C3H8
a)
Propene
b)
Butane
c)
Butene
d)
Propane
128.
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
129.
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
130.

the MP and BP increases as the molecular structure increases

a)

hydrocarbons

b)

ethers

c)

ketones

131.

the type of reaction that occur in alkenes

a)

elimination

b)

substitution

c)

addition

132.

The molecular formula C5H12 contains how many isomeric alkanes?

a)

1

b)

2

c)

3

d)

4

133.

which compound is made up of carbons and hydrogen

a)

hydrocarbons

b)

aldehytes

c)

condensed structure

d)

alcohols

134.
Which of the following compounds is not organic?
a)
CH4
b)
CO
c)
C2H2
d)
CCl4
135.
How many carbon atoms are in propane
a)
1
b)
2
c)
3
d)
4
136.

what are the outer most electrons called

a)

energy level

b)

valence

c)

valency

137.

How to determine that a molecule exhibit cis-trans isomerism?

a)

Restricted rotation in a carbon-carbon single bond of alkenes

b)

Each carbon of a site of restricted rotation has 2 different atoms or groups attached to it

c)

Exist in cyclic compouds only

d)

Similar chemical properties

138.
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
139.
How many hydrogen atoms are in butane
a)
4
b)
6
c)
8
d)
10
140.
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
141.

which reaction that releases oxidising agents, heat and light

a)

substitution

b)

combustion

c)

addition

142.

Which among the following does not exhibit geometric isomerism?

a)

1-hexene

b)

2-hexene

c)

3-hexene

d)

4-hexene

143.

What is a functional group?

a)

Atoms or group of atoms that give specific characteristics to a molecule

b)

Group of molecules that make up a group of atoms

c)

Group of molecules that give specific characteristics to an atom

d)

Group of atoms that give specific characteristics to an element

144.
General formula of Alkane is 
a)
CnH2n+2
b)
CnH2n
c)
CnH2n+1OH
d)
CnH2n+1COOH
145.
What is organic chemistry?
a)
chemistry relating to biological organisms
b)
chemistry involving carbon 
c)
chemistry involving micro-organisms
d)
chemistry involving oxygen
146.
What is formed when an organic compound is bunt?
a)
Carbon dioxide
b)
Hydrogen peroxide
c)
Carbon Sulfide
d)
Hydrogen Sulfide
147.

Macromolecule that is made up of repeated structure called monomers

a)

protein

b)

amino acids

c)

polymer

148.

what determines the properties of hydrocarbons

a)

BP

b)

molecular structure

c)

MP

149.
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

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