Alcohols, Phenols And Ethers Mock Test

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Quiz: Alcohols, Phenols and Ethers – Progressive Test
Total questions: 650
Questions in this round: 50
Time allotted: 70 minutes
Pass score: 60%
Total rounds: 13
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Quiz: Alcohols, Phenols and Ethers – Certificate Challenge
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1 / 50

1. A sample reacts with aqueous sodium hydroxide but does not produce effervescence with aqueous sodium bicarbonate. This behaviour is most consistent with:

a) ethanoic acid

b) ethoxyethane

c) phenol

d) ethanol

2 / 50

2. Identify the row containing the most defensible physical-property description.

Row	Alcohol type	Description
P	Lower monohydric alcohol	Necessarily a coloured ionic solid
Q	Long-chain alcohol	May be solid under ordinary conditions
R	Polyhydric alcohol	Always less viscous than methanol
S	Any alcohol	Must be denser than water

a) Row P

b) Row Q

c) Row S

d) Row R

3 / 50

3. Direct acid-catalysed esterification is often slower with a highly hindered tertiary alcohol than with a comparable primary alcohol because:

a) steric crowding hinders nucleophilic attack

b) tertiary alcohols cannot form any bond to a carbonyl carbon

c) primary alcohols are always stronger mineral acids

d) tertiary alcohols contain no oxygen lone pairs

4 / 50

4. Addition of dilute hydrochloric acid to an aqueous solution of sodium phenoxide produces:

a) chlorobenzene and sodium hydroxide

b) benzoic acid and sodium metal

c) benzene and hypochlorous acid

d) phenol and sodium chloride

5 / 50

5. Identify the row in which all three classifications agree with the structure.

Row	Group type	Symmetry
P	Dialkyl ether	Unsymmetrical
Q	Alkyl aryl ether	Unsymmetrical
R	Dialkyl ether	Symmetrical
S	Diaryl ether	Unsymmetrical

a) Row Q

b) Row P

c) Row R

d) Row S

6 / 50

6. Ethanol is heated with concentrated sulfuric acid under conditions that favour elimination. The principal organic product is:

a) ethanoic acid

b) ethene

c) ethoxyethane

d) ethanal

7 / 50

7. An aqueous solution of sodium phenoxide is acidified with dilute hydrochloric acid. The expected result is:

a) phenoxide concentration increases as pH falls

b) phenol becomes a fully water-soluble chloride salt

c) sodium phenoxide remains unchanged despite acidification

d) neutral phenol forms and may separate from water

8 / 50

8. The compound is not a benzylic alcohol because:

a) benzylic alcohols must contain exactly one carbon atom

b) the benzene ring prevents the formation of alcohols

c) the carbinol carbon is not adjacent to the aromatic ring

d) the molecule contains more than one group

9 / 50

9. Among two isomeric primary alcohols having the same molecular formula, the straight-chain isomer generally has the higher boiling point because it:

a) offers more intermolecular contact area

b) forms more hydrogen bonds per molecule

c) forms stronger ionic attractions in the liquid

d) has a higher molar mass than its isomer

10 / 50

10. Which condition-product combination is most appropriate for ethanol in concentrated sulfuric acid?

a) Near : ethoxyethane; higher temperature: ethene

b) Near : ethanoic acid; higher temperature: ethanal

c) Near : ethene; higher temperature: ethoxyethane

d) Near : methane; higher temperature: methanol

11 / 50

11. Identify the row in which the reagent sequence and product are correctly matched.

Row	Starting compound	Reagent sequence	Final product
P	Chlorobenzene	Dilute , room temperature	Phenol rapidly
Q	Chlorobenzene	, high temperature and pressure; then acidification	Phenol
R	Chlorobenzene	Alcoholic	Benzyl alcohol
S	Chlorobenzene		Phenol

a) Row S

b) Row Q

c) Row P

d) Row R

12 / 50

12. The statement that hydroboration is a syn addition means that:

a) two hydroxyl groups are added to adjacent carbons

b) hydrogen and boron initially add to opposite faces of the double bond

c) the carbon skeleton must undergo a methyl shift

d) hydrogen and boron initially add to the same face of the double bond

13 / 50

13. A plant processes of cumene and obtains phenol with an overall yield of . What mass of phenol is produced? Use and .

14 / 50

14. Match each compound in Column I with its description in Column II.

Column I	Column II
P. Phenol	1. Benzene-1,3-diol
Q. Catechol	2. Methyl-substituted phenol
R. Resorcinol	3. Hydroxybenzene
S. Cresol	4. Benzene-1,2-diol

a) P-3, Q-1, R-2, S-4

b) P-3, Q-4, R-1, S-2

c) P-4, Q-3, R-1, S-2

d) P-2, Q-1, R-4, S-3

15 / 50

15. Higher members of a homologous alcohol series may occur as solids at ordinary temperature mainly because:

a) oxygen is removed as the chain becomes longer

b) all higher alcohols become ionic

c) greater size and attraction favour the condensed state

d) their hydroxyl groups are converted into carbonyl groups

16 / 50

16. The structure named propane-1,3-diol is:

17 / 50

17. The approximate values of ethanoic acid, phenol, and ethanol are , , and , respectively. Which conclusion follows?

a) Phenol is stronger than ethanoic acid but weaker than ethanol

b) Ethanoic acid is strongest, followed by phenol and then ethanol

c) All three compounds have equal acidity

d) Ethanol is the strongest acid because it has the largest

18 / 50

18. Intermolecular hydrogen bonding in liquid alcohols should be viewed as:

a) a dynamic network whose bonds continually break and reform

b) complete transfer of hydrogen ions between all neighbouring molecules

c) conversion of every alcohol molecule into an alkoxide ion

d) permanent covalent chains that cannot rearrange

19 / 50

19. A stored ether contains a small amount of nonvolatile peroxide. Half of the ether solvent evaporates while the peroxide remains. The peroxide concentration will approximately:

a) double as the solvent volume halves

b) become zero because ether vapour destroys it

c) remain unchanged under all conditions

d) fall to one-half of its original value

20 / 50

20. Which feature makes the para phenolsulfonic acid isomer more stable than the ortho isomer under the usual comparison?

a) The para isomer contains fewer oxygen atoms

b) greater separation reduces steric crowding

c) The ortho isomer cannot participate in resonance

d) The para isomer has no aromatic ring

21 / 50

21. Which compound is expected to have the most extensive intermolecular hydrogen bonding per molecule?

a) ethanol

b) dimethyl ether

c) propane

d) glycerol

22 / 50

22. Compound X gives a violet colour with neutral ferric chloride. After treatment with aqueous sodium hydroxide and methyl iodide, product Y no longer gives this colour. Heating Y with hydrogen iodide regenerates a compound that again gives the violet test. Which conclusion is correct?

a) X is ethanoic acid and Y is methyl ethanoate

b) X is anisole and Y is phenol

c) X is ethanol and Y is ethoxyethane

d) X is phenol and Y is anisole

23 / 50

23. A compound contains one phenolic group and one side-chain group. The most accurate description is:

a) it contains one phenolic hydroxyl group and one alcoholic hydroxyl group

b) it is only a dihydric alcohol because both groups contain oxygen

c) it is only a dihydric phenol because two groups are present

d) it must be an ether because oxygen occurs twice

24 / 50

24. Identify the row that gives a consistent description of the oxygen centre.

Row	Compound	Atomic framework at oxygen
P	Water	Linear
Q	Methanol	Trigonal planar
R	Dimethyl ether	Bent
S	Ethanol	Linear

a) Row R

b) Row S

c) Row P

d) Row Q

25 / 50

25. Why is a reflux condenser commonly used while heating a Fischer esterification mixture?

a) It selectively destroys all water as soon as it forms

b) It converts the ester vapour into an alkene

c) It changes the equilibrium constant by removing the catalyst

d) permits prolonged heating while condensing volatile vapours

26 / 50

26. Ethylene glycol is an important feedstock in the manufacture of:

a) polyester fibres and resins

b) elemental sulfur products

c) ammonia-based fertilisers

d) inorganic chloride salts

27 / 50

27. Phenol heated with chloroform and aqueous sodium hydroxide, followed by acidification, gives mainly:

a) 2-hydroxybenzoic acid

b) 2-hydroxybenzaldehyde

c) methoxybenzene

d) 2-hydroxybenzyl alcohol

28 / 50

28. When propan-1-ol is heated under reflux with excess acidified potassium dichromate, the principal organic product is:

29 / 50

29. The alcohol is primary even though its carbon chain is branched. This is because:

a) primary alcohols must contain exactly five carbon atoms

b) the branch is attached directly to the oxygen atom

c) every branched alcohol is automatically primary

d) the carbinol carbon is bonded to only one carbon group

30 / 50

30. A chemical complex has abundant benzene and propene supplies and also has a strong market for acetone. Which phenol-manufacturing route is particularly well suited to these conditions?

a) Alkaline fusion of sodium benzene sulfonate only

b) Fermentation of glucose

c) Hydrolysis of chlorobenzene at room temperature

d) The cumene process

31 / 50

31. Which observation most strongly indicates that the alkaline stage of the Dow process has produced an ionic phenoxide salt rather than neutral phenol?

a) The benzene ring becomes completely saturated

b) A silver mirror forms without further treatment

c) acidification causes phenol to appear

d) Chlorine gas is evolved immediately

32 / 50

32. Assertion: Warming benzene diazonium chloride with water readily gives phenol.
Reason: Loss of highly stable nitrogen gas strongly favours replacement of the diazonium group.

a) Both Assertion and Reason are true, but Reason does not explain Assertion

b) Both Assertion and Reason are true, and Reason explains Assertion

c) Assertion is true, but Reason is false

d) Assertion is false, but Reason is true

33 / 50

33. An sample of chloroform is used as the limiting reagent in a Reimer-Tiemann reaction with excess phenol. If salicylaldehyde is obtained in an yield, what mass is produced? Use and .

34 / 50

34. Anisole is described accurately by which combination?

a) an aryl alkyl ether with an activated aromatic ring and fragrance-related uses

b) a diaryl ether with a strongly deactivated aromatic ring

c) a phenol that gives a violet colour with neutral

d) a dialkyl ether that gives two molecules of iodoethane with excess

35 / 50

35. When sodium ethoxide is heated with tert-butyl bromide, the principal organic product is usually:

a) 2-methylpropene

b) tert-butanol

c) ethoxyethane

d) tert-butyl ethyl ether

36 / 50

36. Conditions most suitable for producing ethanol from a sugar solution by fermentation are:

a) low temperature, high pressure, and a metal catalyst

b) strong alkali, ultraviolet light, and complete absence of yeast

c) concentrated acid, high temperature, and continuous oxygen supply

d) yeast, a suitable warm temperature, and oxygen-limited conditions

37 / 50

37. Saturated open-chain monohydric alcohols and ethers belong to the same general molecular-formula family represented by:

38 / 50

38. A sample of ethyl ethanoate is completely reduced with excess . What mass of ethanol is formed in total? Use .

39 / 50

39. Phenyl tert-butyl ether is treated with hydrogen iodide. Cleavage occurs mainly at the tert-butyl-oxygen bond because:

a) the ether cannot be protonated

b) the phenyl group forms a more stable carbocation than the tert-butyl group

c) tert-butyl carbocation formation leaves the aryl–oxygen bond intact

d) iodide performs ordinary backside attack at the aromatic carbon

40 / 50

40. Ethanol is converted into ethyl ethanoate by:

a) ethanoic acid with acid catalyst and heat

b) Acidified potassium dichromate under prolonged reflux

c) Methanoic acid with aqueous sodium hydroxide

d) Hydrogen iodide with red phosphorus

41 / 50

41. Why is -nitrophenol more acidic than -nitrophenol?

a) The para compound contains an additional oxygen atom

b) The meta nitro group donates electrons more strongly

c) The meta compound cannot form a phenoxide ion

d) para nitro stabilises phenoxide by both effects

42 / 50

42. Propan-2-ol and methoxyethane are:

a) positional isomers

b) ether metamers

c) carbon-chain isomers

d) functional isomers

43 / 50

43. Three compounds X, Y, and Z give the following observations.
X releases carbon dioxide with aqueous sodium bicarbonate.
Y dissolves in aqueous sodium hydroxide and gives a coloured complex with neutral ferric chloride but does not react with bicarbonate.
Z shows no reaction with aqueous sodium hydroxide and releases no hydrogen with sodium metal.

The compounds X, Y, and Z are respectively:

a) ethanol, phenol, diethyl ether

b) ethanoic acid, phenol, diethyl ether

c) ethanoic acid, ethanol, anisole

d) phenol, ethanoic acid, diethyl ether

44 / 50

44. Assertion: Tertiary alcohols generally dehydrate more readily than comparable secondary and primary alcohols under acid-catalysed conditions.
Reason: Tertiary alcohols can form more stable carbocation intermediates than secondary and primary alcohols.

a) Assertion is true, but Reason is false

b) Both Assertion and Reason are true, but Reason does not explain Assertion

c) Both Assertion and Reason are true, and Reason explains Assertion

d) Assertion is false, but Reason is true

45 / 50

45. Assertion: To convert bromoethane into ethanoic acid through ethanol, aqueous potassium hydroxide must be used before the oxidising agent.
Reason: Aqueous potassium hydroxide first replaces bromide by hydroxide, producing the primary alcohol required for subsequent oxidation.

a) Assertion is false, but Reason is true

b) Assertion is true, but Reason is false

c) Both Assertion and Reason are true, but Reason does not explain Assertion

d) Both Assertion and Reason are true, and Reason explains Assertion

46 / 50

46. The oxidation states of the functional carbon in the sequence ethanol ethanal ethanoic acid are:

47 / 50

47. A bottle of a lower ether is placed beside an open flame. The principal immediate safety concern is that the ether:

a) neutralises oxygen in the room

b) releases carbon dioxide before ignition

c) is nonvolatile and accumulates only as a solid

d) forms flammable vapour that can ignite

48 / 50

48. A structure contains a benzene ring with at carbon , bromine at carbon , and methyl at carbon . Its name is:

a) 2-bromo-4-methylphenol

b) 2-methyl-4-bromophenol

c) 4-methyl-2-bromophenol

d) 4-bromo-2-methylphenol

49 / 50

49. Consider the following statements about ethers.
Statement I: A symmetrical ether contains identical groups on both sides of oxygen.
Statement II: An unsymmetrical ether must contain one alkyl group and one aryl group.
Statement III: Diethyl ether is a symmetrical dialkyl ether.

a) Statements I, II, and III

b) Statements II and III only

c) Statements I and III only

d) Statements I and II only

50 / 50

50. Ethanol reacts with sodium metal according to the equation:

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Alcohols, Phenols and Ethers Mock Test – Class 12 Chemistry

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