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Organic chemistry

Total questions: 100

Worksheet time: 1hrs 4mins

Name
Class
Date
1.
what does S stand for?
a)
salt
b)
sodium
c)
sulfur
d)
spit
2.
Which compound is inorganic?
a)
Glucose (C₆H₁₂O₆)
b)
Ethane (C₂H₆)
c)
Carbon Dioxide (CO₂)
d)
Stearic Acid (C₁₈H₃₆O₂)
3.
The four organic compounds found in living things are?
a)
Carbohydrates, Lipids, Nucleic Acids, and Oxygen
b)
Carbohydrates, Lipids, Proteins, and Carbon
c)
Carbohydrates, Lipids, Proteins, Nucleic Acids
d)
Carbon, Lipids, Proteins, Nucleic Acids
4.
What is an organic Compound?
a)
a group of molecules that contain calcium
b)
A group of molecules that contain carbon-hydrogen bonds
c)
A group of molecules that contain carbon
d)
A group of molecules that contain water
5.
Function: Build organelles, build body parts, and helps with body defense
a)
Proteins
b)
Carbohydrates
c)
Nucleic Acids
d)
Lipids
6.

Which homolgous series contains a C=C double bond?

a)

alkanes

b)

alkenes

c)

alcohols

d)

carboxylic acids

7.

Which homolgous series contains only C-C single bonds?

a)

alkanes

b)

alkenes

c)

alcohols

d)

carboxylic acids

8.

-COOH is the functional group for...

a)

alcohols

b)

esters

c)

carboxylic acids

d)

amides

9.

-OH is the functional group for...

a)

alcohols

b)

esters

c)

carboxylic acids

d)

amides

10.

An alcohol can be __________________ to form a carboxylic acid

a)

oxidised

b)

reduced

c)

polymerised

d)

broken down

11.

Alcohols can be oxidised by...

a)

combustion

b)

freezing

c)

decomposition

d)

addition

12.

Acidified potassium dichromate is an example of...

a)

an alkali

b)

a reducing agent

c)

a fuel

d)

an oxidising agent

13.

Name this carboxylic acid

a)

ethanoic acid

b)

prpoanoic acid

c)

butyl butanoate

d)

butanoic acid

14.

Name this ester

a)

ethyl ethanoate

b)

propyl ethanoate

c)

methyl ethanoate

d)

ethyl methanoate

15.

What catalyst is used in making esters?

a)

sodium hydroxide

b)

iron

c)

sulfuric acid

d)

lithium oxide

16.

alkene + ? --> alcohol

a)

hydrogen

b)

oxygen

c)

water

d)

carbon dioixde

17.

alcohol + ? --> carboxylic acid

a)

hydrogen

b)

oxygen (oxidising agent)

c)

water

d)

carbon dioixde

18.

carboxylic acid + ? --> ester

a)

water

b)

alkene

c)

alcohol

d)

alkane

19.

Name the monomer that forms this polymer

a)

ethane

b)

ethanol

c)

ethene

d)

methene

20.

What is a functional group?

a)

Group of atoms that give specific characteristics to a molecule

b)

Group of molecules that give specific characteristics to an atom

c)

Group of molecules that make up a group of atoms

d)

Group of atoms that give specific characteristics to an element

21.

Classify the compound based on the functional group present.

a)

aldehyde

b)

ketone

c)

alcohol

d)

carboxyl

22.

Identify the functional groups present in this compound.

a)

amine

b)

amide

c)

ether

d)

ester

23.
Define the term allotropes
a)
Atoms with same proton number but different number of neutrons
b)
Atoms with same proton number but different mass number
c)
Atoms in different arrangement in structure
d)
Atoms in different arrangement and different physical form
24.

Large molecules made up of small monomers are called

a)

polymers

b)

monomer

c)

allotrope

d)

functional group

25.

Small molecules that make up larger molecules

a)

polymer

b)

monomer

c)

allotrope

d)

functional group

26.

An electrophile is a Lewis...............

a)

Base

b)

Acid

c)

Radical

d)

Anion

27.

A neutral species that has an unpaired electron is called a ........

a)

Electrophile

b)

Nucleophile

c)

Carbanion

d)

Free radical

28.

The carbon bearing the unpaired electron in a simple alkyl free radical is ........... hybridized

a)

sp

b)

sp2

c)

sp3

d)

sp2d

29.

What kind of bond cleavage yields charged fragments?

a)

Heterolysis

b)

Homolysis

c)

substitution

d)

Unifrom

30.

How many sigma bonds are there in acetylene molecule?

a)

1

b)

3

c)

2

d)

5

31.

Number of alpha hydrogen atoms in 2-butene molecule is..........

a)

2

b)

6

c)

4

d)

3

32.
Organic compounds are compounds contain ______________.
a)
O
b)
C
c)
N
d)
S
33.
Give the name of this compound...
C3H8
a)
Propene
b)
Butyne
c)
Butene
d)
Propane
34.
The molecular formula for Heptane is
a)
C4H10
b)
C8H18
c)
C5H12
d)
C7H16
35.

Which one is NOT a biogenic element?

a)

Oxygen

b)

Nitrogen

c)

Sodium

d)

Sulphur

36.

Carbon has 4 valence electrons. What is the valence configuration?

a)

1s2 p2

b)

2s2 p2

c)

3s2 p2

d)

4s2 p2

37.

Carbon has three forms (allothrops). Which one is NOT one?

a)

Diamond

b)

Coal

c)

Granite

d)

Graphite

38.

How many organic materials do we have approx?

a)

100.000

b)

1000.000

c)

100.000.000

d)

1000.000.000

39.

What is Vis vitalis?

a)

A force that was believed to hold organic materials together

b)

A chemical bonding believed to exist between materials inthe human body

c)

A force that was believed to make things grow old

d)

A force that is proven to hold organic materials in the human body

40.

Who was Worther?

a)

Dutch chemist

b)

French physicist

c)

English doctor

d)

German chemist

41.

The stability of carbocation follows the order:

a)

Primary> Secondary>Tertiary> Methyl

b)

Secondary>Tertiary> Primary> Methyl

c)

Tertiary > Secondary> Primary > Methyl

42.

The change in hybridization affects electronegativity of carbon. Arrange C(sp3), C(sp2) and C(sp) in the increasing order of electronegativity.

a)

C(sp3)<C(sp2) <C(sp)

b)

C(sp3)< C(sp) <C(sp2)

c)

C(sp)< C(sp2) <C(sp3)

43.

Carbocations have ------------- shape with positively charged carbon being sp2 hybridised.

a)

Tetrahedral

b)

Trigonal planar

c)

linear

44.
What is the general formula of the alkynes?
a)
CnH2n+1
b)
CnH2n+2
c)
CnH2n-1
d)
CnH2n-2
45.
Which of the following could contain a triple bond?
a)
C4H10
b)
C4H8
c)
C4H6
d)
C4H12
46.
If an alkane has 20 carbon atoms, how many hydrogen atoms will it have?
a)
20
b)
22
c)
40
d)
42
47.

What chemical is this? (C5H10)

a)

Pentene

b)

Pentane

c)

Hexane

d)

Heptene

48.
General formula of Alkane is 
a)
CnH2n+2
b)
CnH2n
c)
CnH2n+1OH
d)
CnH2n+1COOH
49.

2-methyl propane is an isomer of

a)

propane

b)

butane

c)

pentane

d)

hexane

50.

Nonane has how many hydrogen atoms?

a)

9

b)

18

c)

20

d)

22

51.

Which one of the following contains a triple bond in the structure?

a)

1-butyne

b)

7-propyne

c)

ethene

d)

nonane

52.

_______________________are compounds that contain only carbon and hydrogen

a)

Hydrocarbons

b)

Inorganic compounds

c)

Acids

53.

_________________are alkanes in which the carbon atoms are arranged in a ring, or cyclic, structure.

a)

Cycloalkanes

b)

Alkanes

c)

Benzene

54.

Name the following hydrocarbon:

a)

3,3,4-triethylhexane

b)

2,3,4-trimethylhexane

c)

2,4-dimethylheptane

55.

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

56.
Which of the following would have the highest melting point?
a)
C3H8
b)
C4H8
c)
C5H12
d)
C22H44
57.

Phenol is stronger acid than water and itself it is

a)

weakly acidic

b)

weakly basic

c)

alkali

d)

strong acid

58.

Phenols are more acidic than alcohols because

a)

Phenoxide ion is stablised by resonance

b)

Phenols are more soluble in polar solvents

c)

Phenoxide ion does not exhibit resonance

d)

Alcohols do not lose H atoms at all

59.

Select the true statement

a)

Phenol reacts with sodium hydroxide but not sodium carbonate

b)

Phenol reacts with sodium carbonate but not with sodium hydroxide

c)

Phenol reacts with neither sodium carbonate nor sodium carbonate

d)

Phenol reacts with both sodium hydroxide and sodium carbonate

60.

Name the following

a)

2,4,6-Trinitrotoluene

b)

Trinitro benzene

c)

1,3,5-Trinitrotoluene

61.

What is the name of this compound?

a)

o-pheno

b)

m-phenol

c)

o-chlorophenol

d)

p-chlorophenol

e)

m-chlorophenol

62.

When phenol is treated with excess of bromine water, it gives which of the following product?

a)

m-bromophenol

b)

o-and p-bromophenol

c)

2,4-dibromophenol

d)

2,4,6-tribromophenol

63.

Bromine reacts with phenol and decolorize orange color and turns it to which of the colored precipitate?

a)

white precipitate

b)

pink precipitate

c)

blue precipitate

d)

black precipitate

64.

Phenol is obtained by heating aqueous solution of which of the following?

a)

Aniline

b)

Benzene diazonium chloride

c)

Benzoic acid

d)

Benzyl alcohol

65.

Comparing, Phenol reacts readily then the benzene, so it is a

a)

nucleophile

b)

electrophile

c)

protophile

d)

both A and B

66.

Phenols produce 2,4,6-trinitro phenol using following reagents

a)

Dil HNO3

b)

Con HNO3

c)

Con HNO3 + Con H2SO4

d)

Con H2SO4

67.

Among the Alkenes which one produces tertiary butyl alcohol on acid hydration

a)

CH3CH2CH=CH2

b)

CH3CH=CHCH3

c)

(CH3)2C=CH2

d)

CH3CH=CH2

68.

Which of the following cannot be made by using Williamson synthesis

a)

Methoxybenzene

b)

Benzyl p-nitrophenyl ether

c)

tert-Butyl methyl ether

d)

Di-tert-butyl ether

69.

Phenol reacts with bromine in CS2 to give

a)

o-bromophenol

b)

m-bromophenol

c)

o-and p-bromophenol

d)

2,4,6-tribromophenol

70.

When phenol is treated with CHCl3 and NaOH the product formed is

a)

benzaldehyde

b)

salicylaldehyde

c)

benzoic acid

d)

salicylic acid

71.

tert-Butyl methy ether on heating with HI gives a mixture of

a)

tert-butyl alcohol and methyl iodide

b)

tert-butyl iodide and methanol

c)

isobutylene and methyl iodide

d)

isobutylene and methanol

72.

CH3CH2OH can be converted into CH3CHO by

a)

catalytic hydrogenation

b)

treatment with LiAlH4

c)

treatment with pyridinium chlorochromate

d)

treatment with KMnO4

73.

An organic compound X on treatment with PCC in dichloromethane gives compound Y. Compound Y reacts with I2 and alkali to form triiodomethane. The compound X is

a)

CH3CH2OH

b)

CH3CHO

c)

CH3COCH3

d)

CH3COOH

74.

Acetone with methylmagnesium bromide followed by hydrolysis yeild

a)

propan-2-ol

b)

2-methylpropan-2-ol

c)

propan-1-ol

d)

no reaction

75.

the major product when phenol is treated with PCl5

a)

chlorobenzene

b)

triphenylphosphate

c)

o-chlorophenol

d)

p-chlorophenol

76.

The class of compounds containing C=O are called

a)

Aldehydes

b)

Ketones

c)

Carbonyl Compounds

d)

None of the Above

77.

Which of the following compounds does not contain an OH group

a)

Phenol

b)

Carboxylic acid

c)

Aldehydes

d)

Alcohols

78.

Acetophenone is prepared from

a)

Friedel craft reaction

b)

Rosenmund reaction

c)

Sandmayer reaction

d)

Wurtz reaction

79.

The Clemmenson reduction of acetone yields

a)

Ethanol

b)

Ethanal

c)

Propane

d)

Propanol

80.

Aldehydes and Ketones can be prepared from

a)

Acid Chlorides

b)

Nitriles

c)

Both of them

d)

None of the above

81.

Catalyst SnCl / HCl 2 is used in

a)

Stephen's reduction

b)

Cannizzaro reaction

c)

Clemmensen's reduction

d)

Rosenmund's reduction

82.

Ketones are prepared by

a)

Clemmensen's reduction

b)

Cannizzaro reaction

c)

Rosenmund's reduction

d)

Oppenaur's oxidation

83.

Which of the following will undergo aldol condensation

a)

Acetaldehyde

b)

Propanaldehyde

c)

Benzaldehyde

d)

Trideuteroacetaldehyde

84.

Which one of the following pairs is not correctly matched

a)

C=O_Clemmensons reduction_> >CH2

b)

>C=O Wolf Kishner Reduction> >CHOH

c)

-COCl Resunmund's reduction> - CHO

d)

-C = N Stefen's Reduction> -CHO

85.

Which of the following tests would give a positive result for propan-1-ol?

a)

The iodoform test (NaOH + I2)

b)

Tollen's reagent (silver mirror test)

c)

PCl5 (phosphorus pentachloride)

d)

2,4-DNPH (Brady's reagent)

86.

What will be formed if butanone is reacted with LiAlH4 in dry ether?

a)

Butanoic acid

b)

Butan-1-ol

c)

Butan-2-ol

d)

Butanal

87.

What is the name of the mechanism when KCN (in acidic conditions) reacts with propanal?

a)

Free radical substitution

b)

Nucleophilic substitution

c)

Nucleophilic addition

d)

Electrophilic addition

88.

If propanal reacts with KCN in acidic conditions, which of the following is true?

a)

The product is not chiral

b)

A racemic mixture of the R and S enantiomers is formed

c)

Only the R enantiomer forms

d)

Only the S enantiomer forms

89.

Name this molecule:

a)

Pentanoic acid

b)

2-hydroxy-2-methylbutan3-one

c)

3-hydroxy-3-methylbutane-2-one

d)

2-oxo-3-methylbutan-3-ol

90.
Propanone is very soluble in water because
a)
it is non-polar
b)
it can form hydrogen bond with water molecule
c)
water is a polar solvent
d)
the dipole-dipole interactions are weak between propane and water
91.

Choose the best reagent in the missing box for carrying out the following reaction

a)

PCC, CH2Cl2

b)

CH3MgBr in ether, then H3O+

c)

m-ClC6H4CO3H

d)

warm H2SO4/H2O

e)

NaOCH3, CH3OH

92.
Aldehyde reacts with Tollen's reagent forming:
a)
Yellow precipitate
b)
Brick-red precipitate
c)
Purple solution
d)
Silver mirror
93.

When reacted with a strong oxidising agent, aldehydes turn into

a)

carboxylic acids

b)

ketones

c)

primary alcohols

d)

secondary alcohols

94.

The correct order of acidic strength of carboxylic acids is

a)

Formic acid < benzoic acid < acetic acid

b)

Formic acid < acetic acid < benzoic acid

c)

Acetic acid < Formic acid < benzoic acid

d)

Acetic acid < benzoic acid < Formic acid

95.

The products of the reaction of a carboxylic acid and an alcohol would be

a)

Ketone and water

b)

Amide and water

c)

Acid chloride and water

d)

Ester and water

96.

Boiling points of carboxylic acids is higher than those of corresponding alcohols is due to

a)

Strong London dispersion forces

b)

Strong dipole dipole interaction

c)

Strong hydrogen bonded dimer

d)

Strong covalent bond

97.
Which compound has the highest boiling point?
a)
Butane
b)
Dimethyl ether
c)
Propan-1-ol
d)
Acetic acid
98.

1-hexanol reacts with PCC/CH2Cl2 produced

a)

hexene

b)

hexanoic acid

c)

hexanal

d)

hexane

99.

Which of the following carboxylic acids is expected to have the highest boiling point?

a)

CH3CH2COOH

b)

CH3CH(OH)COOH

c)

CH2(COOH)2

d)

CH3CH(Cl)COOH

100.
Which reagent is commonly used to convert carboxylic acids into acid chlorides?
a)
HCl
b)
SOCl2
c)
CL2
d)
CH3Cl

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