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Year 12 Organic Term 3

Total questions: 50

Worksheet time: 50mins

Name
Class
Date
1.

What would you observe if HNO3 and AgNO3 were added to a solution containing l- ions?

a)

Yellow precipitate

b)

Cream precipitate

c)

White precipitate

d)

No visible change

2.

How can you test for the presence of carbonate ions?

a)

Add HCl and bubble through limewater

b)

Add HNO3 and bubble through limewater

c)

Add H2SO4 and bubble through limewater

d)

Add AgNO3 and bubble through limewater

3.

Which equation is a propagation step in the conversion of trichloromethane into tetrachloromethane by reaction with chlorine in the presence of ultraviolet light?

a)

CHCl3 + Cl2 ⟶ CCl4 + HCl

b)

●CCl3 + ●Cl ⟶ CCl4

c)

CHCl3 + ●Cl ⟶ CCl4 + ●H

d)

●CCl3 + Cl2 ⟶ CCl4 + ●Cl

4.

What is a structural isomer?

a)

Same molecular formula but different structural formula.

b)

Different functional groups.

c)

Different bonds in the structure.

d)

Change in the position of the functional group.

5.

Name this isomer of heptane

a)

5-methyl-heptane

b)

2-methyl-hexane

c)

2-methyl-heptane

d)

5-methyl-hexane

6.

What is the correct relationship between the two molecules shown below?

a)

There is no relationship

b)

They are positional isomers

c)

They are chain isomers

d)

They are functional group isomers

7.

Which among the following does not exhibit geometric isomerism

a)

1-hexene

b)

2-hexene

c)

3-hexene

d)

4-hexene

8.

Which of the following chemicals will have the highest boiling point?

a)

hexan-1-ol

b)

hexanal

c)

hexane

d)

hexene

9.

What mechanism is an halogenoalkane reacting with KCN in a warm aqueous solution

a)

Nucleophillic Substitution

b)

Electrophillic Addition

c)

Elimination

d)

Free radical substitution

10.

What mechanism would turn an alcohol to an alkene

a)

elimination

b)

nucleophilic substitution

c)

electrophilic addition

11.

What conditions favour nucleophillic substitution

a)

warm

b)

warm and aqueous

c)

hot and aqueous

d)

warm and ethanolic

12.

Which of the following carbocations is the least stable?

a)

Secondary

b)

Primary

c)

Tertiary

13.

What is the general formula for alkenes?

a)

CnH2n

b)

CnH2n+2

c)

CnH2n-2

d)

Cn2Hn

14.

Which bond breaks during cracking?

a)

C-C bond

b)

C-C double bond

c)

C-H bond

d)

C-OH bond

15.

Which reagent is needed to change a haloalkane to an alcohol?

a)

KOH (aq)

b)

KOH(alc)

c)

H2O/ dilute H2SO4

d)

Cr2O72-/H+

16.

Which reagent is needed to change a haloalkane to an amine?

a)

KOH (aq)

b)

NH3(alc)

c)

H2O/ dilute H2SO4

d)

Cr2O72-/H+

17.

Which reagent is needed to change CH3CH2OH to CH3COOH

a)

KOH (aq)

b)

NH3(alc)

c)

H2O/ dilute H2SO4

d)

Cr2O72-/H+

18.

Which reagent is needed to change an alcohol to an alkene?

a)

KOH (alc)

b)

water/dilute H2SO4

c)

concentrated H2SO4

d)

Cr2O72-/H+

19.

alcohol ------> carboxylic acid - reaction type?

a)

addition

b)

substitution

c)

elimination

d)

oxidation

20.

Which is not a possible product when propane, C3H8, reacts with chlorine in sunlight?

a)

H2

b)

C6H14

c)

C3H7Cl

d)

Cl2

21.

Which statement is correct about the polymerization of ethene to poly(ethene)?

a)

The polymer is an alkene.

b)

The monomer ethene and the repeating unit have the same empirical formula.

c)

The monomer ethene is less reactive than the polymer.

d)

The polymer contains C−C single and C=C double bonds.

22.

What is the trend in ionisation energy down group 2

a)

decreases

b)

increases

c)

stays the same

23.

What does the last peak in a mass spectrum tell you?

a)

the molecular ion

b)

any isotopes present

c)

the mass of a segment

d)

mass of an ion

24.

The most insoluble hydroxide in group 2 is...

a)

Ca(OH)2

b)

Ba(OH)2

c)

Sr(OH)2

d)

Mg(OH)2

25.

Magnesium reacts slowly with cold water as follows...

a)

Mg + H2O → MgO + H2

b)

2Mg + 2H2O → 2MgOH + H2

c)

Mg + 2H2O → MgO2 + 2H2

d)

Mg + 2H2O → Mg(OH)2 + H2

26.
How many carbons are in the longest chain of the following molecule:
a)
11
b)
10
c)
9
d)
8
27.
Diagram shows the formation of
a)
1° carbocation
b)
2° carbocation
c)
3° carbocation
d)
None of the above
28.
Based on Markovnikov's rule, A is the major product because
a)
greater positive inductive effect due to 1° carbocation form
b)
greater positive inductive effect due to 2° carbocation form
c)
greater positive inductive effect due to 3° carbocation form
d)
None of the above
29.

Which one of these is a secondary alcohol?

a)

Butan-1,4-diol

b)

2-methylpropan-2-ol

c)

Pentan-2-ol

d)

Pentan-1-ol

30.

Dehydration of an alcohol gives

a)

an aldehyde

b)

an alkane

c)

an alkene

d)

a ketone

31.

Which equation represents a termination step?

a)

CH3CH2CH3 + Br* --> CH3C*HCH3 + HBr

b)

ClO* + O3 --> Cl* + 2O2

c)

RO* + CH2=CH2 --> ROCH2C*H2

d)

CH3C*FCl + Cl* --> CH3CFCl2

32.

Which products are formed when magnesium reacts with steam?

a)

magnesium hydroxide and hydrogen

b)

magnesium hydroxide and oxygen

c)

magnesium oxide and hydrogen

d)

magnesium oxide and oxygen

33.

Which of these steps is nucleophilic substitution

a)

A

b)

B

c)

C

d)

D

34.

What two monomers will form this polymer?

a)

CH2=CHF and CH2=CHCF3

b)

CH2=CH2 and CHF=CHCF3

c)

CH2=CH2 and CH2=CHCF3

d)

CH2=CHF and CHCF3=CHF

35.

What following statement about sulfur dioxide is true?

a)

sulfur dioxide is insoluble in water

b)

sulfur dioxide is an ionic compound

c)

sulfur dioxide is removed by calcium oxide

d)

sulfur dioxide is a basic oxide

36.

What is a functional group isomer of an alkene

a)

alkane

b)

cycloalkane

c)

aldehyde

d)

ketone

37.

What is the reading on the titre?

a)

24.10cm3

b)

24.30cm3

c)

25.70cm3

d)

25.90cm3

38.

Which of the alcohols below can be oxidised by potassium dichromate but not dehydrated by sulphuric acid?

a)

2,3-dimethylbutan-2-ol

b)

2,2-dimethylpropanol

c)

2 methylpropan-2-ol

d)

pentan-3-ol

39.

Which of the statements about fractional distillation true?

a)

a zeolite catalyst is used

b)

each fraction contains a mixture of hydrocarbons

c)

gaseous fractions are formed by breaking covalent bonds

d)

the fractionating column is hottest at the top

40.

Which compound is used to treat the symptoms of indigestion?

a)

MgO

b)

Mg(OH)2

c)

CaO

d)

BaSO4

41.

which compound reacts with Tollen's reagent to give a silver mirror?

a)

butan-2-ol

b)

butanal

c)

butanone

d)

but-2-ene

42.
If an alkane has 20 carbon atoms, how many hydrogen atoms will it have?
a)
20
b)
22
c)
40
d)
42
43.

Which diagram gives the skeletal formula of

2-chloropentan-3-ol ?

a)

A

b)

B

c)

C

d)

D

44.

Which of these always applies to a nucleophile

a)

A

b)

B

c)

C

d)

D

45.
a)

A

b)

B

c)

C

d)

D

46.

Name the following molecule:

a)

3,3-dimethyl-1-butanol

b)

3,3-methyl-1-butanol

c)

2,2-dimethyl-4-butanol

d)

3,3,3-trimethyl-1-propanol

47.

Which is the structures with IUPAC nomenclature


2,2,4-trimethylpentane

a)
b)
c)
d)
48.

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

49.

Which of the following is correct about hydration of ethene?

a)

uses yeast

b)

reversible reaction

c)

uses base

d)

low yield

50.

Which technique allows us to produce a carboxylic acid from an alcohol

a)

primary alcohol distillation

acidified potassium dichromate

b)

secondary alcohol

distillation

potassium dichromate

c)

primary alcohol

reflux

potassium dichromate

d)

secondary alcohol

reflux

potassium dichromate

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