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MU Alkanes Alkenes Alcohols Carbonyl Quiz

Total questions: 70

Worksheet time: 1hrs 10mins

Name
Class
Date
1.

Which one is Lucas reagent?

a)

Cold dilute alkaline KMnO4

b)

Con.HCl / anhydrous ZnCl2

c)

FeSO4 / H2O2

d)

Anhydrous AlCl3

2.

Which one gives turbidity immediately with Lucas reagent?

a)

2- propanol

b)

1-propanol

c)

2-methyl 2-propanol

d)

2-methyl 1-propanol

3.

Classify the types of alcohol of the following molecule.

a)

Primary alcohol

b)

Secondary alcohol.

c)

Tertiary alcohol

d)

Aromatic alcohol.

4.

Give the structure corresponding to 3–cyclohexyl–3–pentanol.

a)
b)
c)
d)
5.

State the rule used to convert 2-methylpent-1-ene to 2-methylpent-2-ol.

a)

Zaitsev's rule

b)

Markovnikov's rule

c)

Hund's rule

d)

Aufbau's rule

6.

Propanol is heated with acidified potassium dichromate. The following statements about this reaction is true except for

a)

Green solution is formed.

b)

Orange solution is formed.

c)

Acidic product is formed.

d)

Cr6+ is reduced to Cr3+.

7.

2-butanol heated with acidified KMnO4 solution produced

a)

butanone

b)

butene

c)

butanoic acid

d)

butane

8.

2-methyl-1-propanol heated with acidified K2Cr2O7 solution produced

a)

alkene

b)

carboxylic acid

c)

alcohol

d)

ketone

9.

glacial ethanoic acid heated with 2-propanol in the presence of concentrated H2SO4 produced

a)

ester (2-propyl ethanoate)

b)

salt

c)

carboxylic acid (pentanoic acid)

d)

alcoholic

10.

The functional group exist in alcohol is

a)

Carboalkoxy

b)

Halogen

c)

Hydroxy

d)

carbonyl

11.

The IUPAC name for this compund is

a)

1-butanol

b)

2-butanol

c)

2-methyl-2-propanol

d)

2-propanol

12.

Alcohol W produces a carboxylic acid upon oxidation with hot acidified KMnO4. Alcohol W is probably a ....

a)

tertiary alcohol

b)

secondary alcohol

c)

primary alcohol

d)

haloalkane

13.

alkene + ? --> alcohol

a)

hydrogen

b)

oxygen

c)

water

d)

carbon dioixde

14.

Which of the following statement is NOT true about an alcohol?

a)

Methanol is the simplest alcohol.

b)

Alcohol is more polar than haloalkane.

c)

Ethanol can be prepared by fermentation.

d)

Solubility of alcohol in water increases with number of carbon atoms.

15.
What is the general formula of the alkynes?
a)
CnH2n+1
b)
CnH2n+2
c)
CnH2n-1
d)
CnH2n-2
16.

Ethene reacts with acidified potassium manganate (VII) solution to form a product.

What is the name of this reaction ?

a)

halogenation

b)

hydrogenation

c)

hydration

d)

oxidation

17.

What is the condition for hydration of butene ?

a)

phosphoric acid, 60 atm, 300 0C

b)

Nickel or platinum, 180 oC

c)

1000atm, 200 oC

d)

room temperature

18.

Which the CORRECT reagent and condition for A

a)

HBr

b)

Cl2, H2O

c)

H2, Ni

d)

HBr, H2O2

19.

Deduce the structure for B

a)
b)
c)
d)
20.

Deduce the structure for C

a)
b)
c)
d)
21.

Name this compound

a)

propene

b)

2-methylprop-1-ene

c)

2-methylpropene

d)

2, methylpropene

22.

What is the reagent/condition suitable in box for this reaction?

a)

H2 / Ni

b)

HBr

c)

H2O / H+

d)

conc H2SO4 and heated

23.

What is the colour of chemical test alkenes reacted with bromine in dichloromethane?

a)

Purple colour remain unchanged

b)

Purple colour decolourised

c)

Reddish brown remain unchanged

d)

Reddish brown decolourised

24.

Which compound is an alkene?

a)

C2H6

b)

C3H8

c)

C4H8

d)

C5H8

25.

Alkenes are used in making plastics. Where do the alkenes come from?

a)

addition reaction

b)

cracking

c)

crude oil

d)

fractional distillation

26.

Hexane has the formula C6H14. Which substance CANNOT formed by cracking hexane?

a)

H2

b)

C2H4

c)

C4H10

d)

C7H16

27.

How many isomers can butene have?

a)

0

b)

2

c)

3

d)

4

28.

Give the name for the compound shown in the picture:

a)

4-hexane

b)

2-hexane

c)

4-hexene

d)

2-hexene

29.
a)
fermentation
b)
combustion
c)
saponification
d)
substitution
30.
a)
substitution
b)
addition
c)
polymerization
d)
fermentation
31.

Diagram represents the structural formula of a carbon compound.

Which of the following alcohol reacts with propanoic acid to produce the above compound?

a)

CH3OH

b)

CH3CH2OH

c)

CH3CH2CH2OH

d)

CH3CH2CH2CH2OH

32.

Diagram shows oxidation process of ethanol.

What can be observed after being heated for 5 minutes?

a)

No colour change

b)

All of the ethanol vapourises and the flask becomes dry

c)

The colour of mixture changes from orange to green

d)

The mixture in the flask separated into two layers. The upper layer is yellow while the lower layer is green

33.

Which group has the following functional group?

a)

hydrocarbon

b)

alchohol

c)

ether

d)

ester

34.

Find out the major product when 2-Butanol is treated with Conc. H2SO4:

a)

1-Butene

b)

2-Butyl Hydrogen Sulphate

c)

2-Butene

d)

None of the above

35.
Diagram shows the formation of
a)
1° carbocation
b)
2° carbocation
c)
3° carbocation
d)
None of the above
36.
Which carbocation is most stable and why?
a)
1°carbocation because of strong inductive effect
b)
1°carbocation because of weak inductive effect
c)
3°carbocation because of weak inductive effect
d)
3°carbocation because of strong inductive effect
37.
Based on Markovnikov's rule which is the major product shown in diagram.
a)
A
b)
B
c)
Both
d)
None of the above
38.
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
39.

Tick any steps below that are PROPAGATION steps...

a)

CH3CH3 + Br2 → CH3CH2Br + HBr

b)

CH3CH3 + Br• → CH3CH2• + HBr

c)

CH3CH2• + CH3CH2• → CH3CH2CH2CH3

d)

CH3CH2• + Br• → CH3CH2Br

40.

Tick any steps below that are INITIATION steps...

a)

CH3CH2• + Br• → CH3CH2Br

b)

Br• + Br• → Br2

c)

CH3CH2• + Br2 → CH3CH2Br + Br•

d)

Br2 → 2Br•

41.

Which ONE of the below CANNOT be called

PROPAGATION STEP 1 ...

a)

butane + Cl• → butanyl radical + hydrochloric acid

b)

[CH3CH2]• + Br2 → CH3CH2Br + Br•

c)

CH3CH3 + Br• → [CH3CH2]• + HBr

d)

CH3CH2CH3 + F• → [CH3CHCH3]• + HF

42.
Name the compound.
a)
nonene
b)
2,2-dimethyl-3-heptene
c)
1,1,5-trimethyl-2-hexene
d)
2,6-dimethyl-3-heptene
43.
What is the name of this carbonyl compound?
a)
pentan-2-one
b)
hexan-5-one
c)
pentan-3-one
d)
hexan-2-one
44.

Give the IUPAC name for the following compound

a)

2-methyl-3-butanone

b)

3-methyl-3-butanone

c)

3-methyl-2-butanone

d)

3-methylbutanone

45.
Aldehyde reacts with Tollen's reagent forming:
a)
Yellow precipitate
b)
Brick-red precipitate
c)
Purple solution
d)
Silver mirror
46.

Which is a test for a C=O?

a)

Bromine water

b)

Fehling's solution

c)

Acidified potassium dichromate (VI)

d)

2,4-DNPH (Brady's reagent)

47.

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)

48.

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

49.

The following reaction scheme shows how propene can be prepared from propanal in two stages using reagents X and Y. Which of the following are the reagents X and Y?


X Y

CH3CH2CHO → CH3CH2CH2OH → H3CH=CH2

a)

X: LiAlH4 ; Y: KOH, ethanol, reflux

b)

X: NaBH4 ; Y: conc.H2SO4, heat

c)

X: dillute H2SO4 ; Y: conc.ethanol, reflux

d)

X: dillute H2SO4 ; Y: KOH, ethanol, reflux

50.

On heating compound X with acidified KMnO4, compound Y is obtained. Compound Y does not react with Fehling’s solution. X and Y are most likely to be,


Compound X Compound Y

a)

CH3COCH3 CH3COOH

b)

CH3CH(OH)CH3 CH3COCH3

c)

CH3CH2CH2OH CH3COCH3

d)

CH3CH2CH2OH CH3CH2CHO

51.

Which substance would test positively with 2,4-DNPH but negatively with Tollens’ reagent?

a)

Propanal

b)

Propanone

c)

Propanoic acid

d)

1-propanol

52.

Acetone reacts with HCN to form a cyanohydrin. It is an example of

a)

Electrophilic addition

b)

Electrophilic substituition

c)

Nucleophilic addition

d)

Nucleophilic substituition

53.

Which statement about butanone is correct?

a)

The C=O of butanone is polar with O δ

b)

Butanone can be prepared by reduction of 1-butanol

c)

Butanone forms brick red precipitate with Fehling’s reagent

d)

Butanone form cloudy solution with Lucas test

54.

All the following reagents can be used to differentiate between propanal and a propanone EXCEPT?

a)

Acidified potassium dichromate (VI) solution

b)

Tollen’s reagent, [Ag(NH3)2]+

c)

Fehling’s solution containing complex ions of Cu2+

d)

Brady's Reagent 2,4,DNPH

55.

What is the product of the reduction of the compund in the image

a)

3-methyl butanol

b)

3-methyl-3-butanol

c)

3-methyl butanoic acid

d)

3-methyl butanone

56.

Halogenate 2-pentene with bromine, what is the product?

a)

pentane

b)

2,3-dibromopentane

c)

3,3-dibromopentane

d)

2,2-dibromopentane

57.

What type of reaction is shown

a)

hydration

b)

hydrogenation

c)

dehydration

d)

dehydrogenation

58.

Which compound gives a brick red precipitate when react with Cu2+ ion in basic medium?

a)
b)
c)
d)
59.

What is the reagent for Tollens’ test?

a)

2,4-DNPH

b)

alkaline excess I2

c)

Cu2+, OH-

d)

[Ag(NH3)2]+ , OH-

60.

What is the reagent for Iodoform’s test?

a)

2,4-dinitrophenylhydrazine

b)

excess I2, NaOH

c)

Cu2+, OH-

d)

[Ag(NH3)2]+ , OH-

61.

What is the positive observation for Brady’s test?

a)

brick red precipitate

b)

silver mirror precipitate

c)

light yellow precipitate

d)

yellow or orange precipitate

62.

Determine structure B.

a)
b)
c)
d)
63.

Lucas test is used to ……………………..

a)

Detect methyl carbinol group

b)

Detect carbonyl compound

c)

Detect hydroxyl group

d)

Differentiate the three classes of alcohols

64.

Give the observation when 2-methyl-1-propanol react with concentrated hydrochloric acid and anhydrous zinc chloride.

a)

No cloudy solution formed after 10 minutes

b)

Cloudy solution formed within 5 minutes

c)

Cloudy solution formed after 10 minutes

d)

Cloudy solution formed immediately

65.

Iodoform test is used to …………………………………………

a)

Differentiate the alkene from alkane

b)

Detect the hydroxyl compound

c)

Differentiate the three classes of alcohols

d)

Detect methyl ketone group

66.
Classify the compound based on the functional group present.
a)
aldehyde
b)
ketone
c)
carboxylic acid
d)
ester
67.

Which of the following is not a carbonyl compound?

a)
b)
c)
d)
68.

What is the structural formula when cyclopentanone reacts with KCN, HCl

a)
b)
c)
d)
69.

Which structural formula is of 2,4-DNPH, a reagent to confirm the presence of carbonyl group.

a)

A

b)

B

c)

C

d)

D

70.

Molecular formula of P is

a)

(CH3)2C(OH)CH2CH3

b)

CH3CH(OH)CH(CH3)2

c)

H2C(OH)CH2CH(CH3)2

d)

CH3CH(OH)CH2CH2CH3