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Fundamentals & Isomers MU

Total questions: 60

Worksheet time: 37mins

Name
Class
Date
1.

This carbon atom went through ....

a)

sp hybridization

b)

sp2 hybridization

c)

sp3 hybridization

d)

dsp3 hybridization

2.

What is the hybridization of a linear molecule?

a)

sp

b)

sp2

c)

sp3

d)

sp3d

3.

What is the hybridization of this molecule shown above

a)

sp

b)

sp2

c)

sp3

d)

sp4

4.

What is the bond angle for the CH4 molecule?

a)

120°

b)

107°

c)

109.5°

d)

90°

5.

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

6.

Which among the following does not exhibit geometric isomerism?

a)

1-hexene

b)

2-hexene

c)

3-hexene

d)

4-hexene

7.

The molecular formula C5H12 contains how many isomeric alkanes?

a)

1

b)

2

c)

3

d)

4

8.

General formula for amines is

a)

R-CH2

b)

R2CH

c)

R-NH2

d)

R-COOH

9.

What kind of molecule is this?

a)

alkane

b)

alkene

c)

alkyne

d)

cycloalkane

10.

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

11.

Classify the compound based on the functional group present.

a)

Ketone

b)

Carboxylic acid

c)

Ester

d)

Ether

12.

Classify the compound based on the functional group present.

a)

Ether

b)

Ketone

c)

Ester

d)

Carboxylic acid

13.

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

14.

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

15.

Which of the following molecules exhibit geometrical isomerism?

a)

CH2=CHCH3

b)

C6H5CH=CHC6H5

c)

(CH3)2C=CHCH3

d)

CH3CH2N=OH

16.

Which atom is nucleophilic?

a)

Carbon

b)

oxygen

c)

hydrogen bonded to the oxygen atom

d)

hydrogen bonded to carbon atom

17.

Which of the following is likely to behave as an electrophile?


NO2+

CN-

CH3NH2

a)

NO2+ and CN-

b)

CN- and CH3NH2

c)

NO2+ and CH3NH2

d)

NO2+ only

18.

Identify the nucleophile in the reaction shown above.

a)

A

b)

B

c)

C

d)

D

19.

Identify the nucleophile in the reaction shown above.

a)

A

b)

B

c)

C

d)

D

20.

Which two elements do all organic compounds contain?

a)

Carbon and hydrogen

b)

Carbon and oxygen

c)

Oxygen and hydrogen

d)

Carbon and nitrogen

21.

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

22.

Which type of bonding is present within organic molecules?

a)

Covalent bond

b)

Ionic bond

c)

Metallic bond

d)

Hydrogen bond

23.

What property can be assigned to a carbon atom that has four different atoms or structural groups attached to it?

a)

isomerity

b)

chirality

c)

chivalry

d)

geometry

24.
How many chiral center is found in C2H5CH(OH)CH2OH?
a)
1
b)
2
c)
3
d)
4
25.

Which of the following statement is FALSEabout optical isomers?

a)

At least 1 asymmetrical chiral center

b)

Mirror images of each other

c)

Non superimposable

d)

carbon center bonded to 4 similar groups

26.

The optical isomer of this compound is

a)
b)
c)
27.

Optical isomers

a)

reflect polarised light in opposite directions

b)

rotate polarised light in opposite directions

c)

reflect plane polarised light in opposite directions

d)

rotate plane polarised light in opposite directions

28.

Optcial isomers have:

a)

polarised light

b)

non-superimposable mirror images

c)

mirror images

d)

superimposable mirror images

29.

In a stereoisomer, ________ means "on the same side" and ______ means "across from."

a)

cis; trans

b)

cis; L

c)

D; L

d)

trans; cis

30.
A double bond between two carbon atoms consists of
a)
2 sigma bonds
b)
1 sigma bond and 1 pi bond
c)
2 pi bonds
d)
The bonding scheme varies depending on the molecule
31.

There are two main forms of isomerism, which are?

a)

Structural isomerism and Stereoisomerism

b)

Stereoisomerism and Physical isomerism

c)

Chemical isomerism and Stereoisomerism

d)

Structural isomers and Geometric Isomers

32.

A structural isomer of pentane is?

a)

2,2-dimethyl butane

b)

2-methyl butane

c)

1-methyl propane

d)

1-methyl pentane

33.
Geometric isomers shown below is called
a)
Cis/trans 1,2 dichloroethane
b)
Cis/trans 1,2 dichloroethene
c)
Cis/trans 1,2 chloroethane
d)
Cis/trans 1,2 chloroethene
34.

Which one of the following can exhibit both geometrical and optical isomerism?

a)

(CH3)2C=CHCH(CH3)CH2CH3

b)

CH3CH2CH=CHCH(CH3)CH2CH3

c)

(CH3)2C=C(CH2CH3)2

d)

CH3CH2CH(CH3)CH(CH3)C=CH2

35.

Which compound does not show stereoisomerism?

a)

1,2-dichloropropene

b)

1,2-dichloropropane

c)

1,3-dichloropropene

d)

1,3-dichloropropane

36.

How many structural isomers, which are esters, have the molecular formula C4H8O2?

a)

2

b)

3

c)

4

d)

5

37.

How many structural isomers, which are aldehydes, have the molecular formula C5H10O?

a)

2

b)

3

c)

4

d)

5

38.

Which compound is an isomer of C2H5OC2H5?

a)

CH3COOH

b)

C2H5COOCH3

c)

C3H7COCH3

d)

C4H9OH

39.

Which formulas represent compounds that are isomers of each other?

a)
b)
c)
d)
40.

Given a formula representing a compound:Which formula represents an isomer of this compound?

a)
b)
c)
d)
41.

Molecules of 1-bromopropane and 2-bromopropane differ in

a)

molecular formula

b)

structural formula

c)

number of carbon atoms per molecule

d)

number of bromine atoms per molecule

42.

Which structural formula represents a molecule that is not an isomer of pentane?

a)
b)
c)
d)
43.

Which pair of compounds are isomers?

a)

CH3CH2CH3 and CH2CHCH3

b)

CH2CH2 and CH3COCH3

c)

CH3OCH3 and CH3COCH3

d)

CH3COCH3 and CH3CH2CHO

44.

What is the name of the compound? And how many carbon atom of the compound?

a)

Cyclononane, 9 carbon atom

b)

Cyclohexane, 6 carbon atom

c)

Cyclodecane, 10 carbon atom

d)

Cyclobutane, 4 carbon atom

45.

Identify the enantiomer of the molecule shown.

a)
b)
c)
d)
46.

which functional group is shown in the picture?

a)

hydroxyl group

b)

carbonyl group

c)

carboxyl group

d)

amino group

47.

Which functional group is shown in the picture?

a)

hydroxyl group

b)

carbonyl group

c)

carboxylic acid group

d)

amino group

48.

which functional group is shown in the picture?

a)

hydroxyl group

b)

carbonyl group

c)

carboxyl group

d)

amino group

49.

The functional isomers of ALDEHYDES are

a)

Alkanes

b)

Ketones

c)

Alcohols

d)

Carboxylic acids

50.

Both pentane and pentene can react with bromine water under the presence of sunlight but they do not belong to the same homologous series because

a)

they have different molecular size

b)

their melting point and boiling point not the same

c)

they do not have the same functional group

d)

they differ from each other by a -H2 group in the molecular formula

51.

Organic compounds are classified according to their

a)

groups

b)

period

c)

chemical reactions

d)

homologous series

52.

Which pair of compounds is classified in the same homologous series?

a)

A

b)

B

c)

C

d)

D

53.

What is the general formula for alcohols?

a)

CnH2n

b)

CnH2n+2

c)

CnH2n+1OH

d)

CnH2n+1COOH

54.

Compound Q has the following properties.

- soluble in water

- boiling point is 780C

What is compound Q

a)

Ethane

b)

Ethene

c)

Ethanol

d)

Ethanoic acid

55.
This structure belongs to the group called
a)
acid
b)
amino acid
c)
alcohol
d)
amine
56.

Which functional groups are present in the given compound?

a)

Ketone and carboxylic acid

b)

Alcohol and Ketone

c)

Aldehyde and Carboxylic acid

d)

Ester and Carboxylic acid

57.

Which funtional group is common in all the compounds given?

a)

Nitrile group

b)

Nitro group

c)

Alkyne group

d)

Acyl Halide

58.
What is the empirical formula for C3H8
a)
CH
b)
C3H8
c)
C6H16
d)
CH2.7
59.
Which pair has the same empirical formula?
a)
NaCrO4 and Na2Cr2O7
b)
C2H4O2 and C6H12O6
c)
C3H6O3 and C2H6O2
d)
CH4 and C2H6
60.

What is the empirical formula of a substance with the molecular formula C2H4?

a)

C2H2

b)

C2H2

c)

C1H1

d)

CH2

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