Alcohol phenol,Ether- Test-1

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1,The heating of phenyl methyl ether with HI produces *

1 point

(a) Iodobenzene

(b) Phenol

(d) Ethyl chloride

2, Which of the following gives positive iodoform test? *

1 point

(a) ethanol

(b) propanol

(d) Acetic acid

3,Among the following sets of reactants which one produces anisole? *

1 point

(a) CH3CHO : RMgX

(b) C6H5OH; NaOH, CH3I

(d) C6H5 —CH3; CH3COCl; AlCl3

4,Monochlorination of toluene in sunlight followed by hydrolysis with aq. NaOH yields *

1 point

(a) o-Cresol

(b) m-Cresol

(d) Benzyl alcohol

5,How many alcohols with molecular formula C4H10O are chiral in nature? *

1 point

(a) 1

(b) 2

(d) 4

6, CH3CH2OH can be converted into CH3CHO by __________ . *

1 point

(a) catalytic hydrogenation

(b) treatment with LiAlH4

(d) treatment with KMnO4

7, The correct order of boiling point of primary (1°), secondary (2°) and tertiary (3°) alcohols is *

1 point

(a) 1° > 2° > 3°

(b) 3° > 2° > 1°

(d) 2° > 3° > 1°

8,Which compound is predominantly formed when phenol is allowed to react with bromine in aqueous medium? *

1 point

(a) Picric acid

(b) O-Bromophenol

(d) p-Bromophenol

9,Phenols are more acidic than alcohols because *

1 point

(a) Phenoxide ion is stablised by resonance

(b) Phenols are more soluble in polar solvents

d) Alcohols do not lose H atoms at all

10, Strength of acidity is in order: *

1 point

(a) II > I > III > IV

(b) III > IV > I > II

(d) IV > III > I > II

11, 1-propanol and 2-propanol can be best dis¬tinguished by *

1 point

(b) Oxidation with CrO3 followed by reaction with Fehling solution.

(d) Oxidation with concentrated H2SO4 followed by reaction with Fehling solution.

(a) Oxidation with KMnO4 followed by reaction with Fehling solution.

12,Which of the following are not used to convert RCHO into RCH2OH? *

1 point

(a) H2/Pd

(b) LiAlH4

(d) Reaction with RMgX followed by hydrolysis

13, Which of the following reagents can be used to oxidise primary alcohols to aldehydes? *

1 point

(a) CrO3 in anhydrous medium.

(b) KMnO4 in acidic medium.

(d) Heat in the presence of Cu at 573K.

14,Benzenediazonium chloride on reaction with phenol in weakly basic medium gives *

1 point

(a) diphenyl ether

(b) p-hydroxyazobenzene

(d) Benzene

15,Phenol reacts with bromine in CS2 at low temperature to give *

1 point

m-bromophenol

o-and p-bromophenol

p-bromophenol

2,4,6-tribromophenol

16, When phenol is treated with excess bromine water it gives *

1 point

m-bromophenol

o- and p-bromophenol

2,4-dibromophenol

2,4,6-tribromophenol

17, Phenol on reduction with H2 in the presence of Ni catalyst gives *

1 point

benzene

toluene

cyclohexane

Cyclohexanol

18, Dehydration of alcohol is an example of *

1 point

addition reaction

elimination reaction

substitution reaction

redox reaction

19, The compound obtained by the reaction of ethene with diborane followed by hydrolysis with alkaline H2O2 is *

1 point

butanol

propanol

ethanol

triethyl bromide

20, Which of the following is formed when phenol is exposed to air? *

1 point

o-Benzoquinone

p-Benzoquinone

Phenoquinone

o-and p-Benzoquinone

21, Final product of the reaction? *

1 point

(a) CH3CH Br CH3

(b) CH3 CH2 CH2 Br

(d) Br CH = CH-CH3

22, The alcohol which does not react with Lucas reagent is *

1 point

isobutyl alcohol

n-butanol

tert-butyl alcohol

sec-butyl alcohol

23, Phenol is less acidic than *

1 point

acetic acid

p-methoxyphenol

p-nitrophenol

Ethanol

24, Among the following compounds, strongest acid is *

1 point

(a) H-C = C-H

(b) C6H6

(d) CH3OH

25, 1-Propanol and 2-propanol can be best distinguished by *

1 point

(a) reaction bleaching powder or calcium oxychloride

(b) Oxidation with acidic dichromate followed by reaction with Fehling solution.

(d) Oxidation with cone. H2SO4 followed by reaction with Fehling solution.

26,The compound which gives the most stable carbonium ion on dehydration is *

1 point

(a) (CH3)2CHCH2OH

(b) (CH3)3COH

(d) CH3CH OH CH2 CH3

27, In CH3 CH2 OH, the bond that undergoes heterolytical change most readily is *

1 point

(a) C-C

(b) C-O

(d) O-H

28, In the reaction of phenol with CHCl3 and aqueous NaOH at 343 K, the electrophile attacking the ring is: *

1 point

(a) CHCl3

(b) CHCl2

(d) COCl2

29, Which of the following is most acidic? *

1 point

(a) Phenol

(b) Benzyl alcohol

(d) cyclohexanol

30, The correct order of boiling points for primary (1°), Secondary (2°) and Tertiery (3°) alcohols is *

1 point

(a) 1° > 2° > 3°

(b) 3° > 2° > 1°

(d) 2° > 3° > 1°

31, When Phenol is distilled with zinc dust, it gives *

1 point

(a) Benzene

(b) Toluene

(d) Benzoic acid

32, Which of the following cannot be made by using Williamson Synthesis: *

1 point

(a) Methoxybenzene

(b) Benzyl p-nitrophenyl ether

(d) Ditert. butyl ether

33, The I.U.P.A.C. name of the ether CH2 = CH-CH2O CH3 is *

1 point

(a) Alkyl methyl ether

(b) l-Methoxy-2-propene

(d) Vinyl dimethyl ether

34, Dehydration of alcohol to ethers is catalysed by *

1 point

(a) cone. H2SO4 at 413 K

(b) Hot NaOH

(d) Hot HNO3

35, Ethers are *

1 point

(a) Neutral

(b) Basic

(d) Amphoteric

36, Among the following, the one which reacts most readily with ethanol is *

1 point

(a) p-Nitrobenzyl bromide

(b) p-Chlorobenzyl bromide

(d) p-methyl benzyl bromide.

37, tert-Butyl methyl ether on heating with HI gives a mixture of *

1 point

(a) tert-Butyl alcohol and methyl iodide.

(b) tert-Butyl iodide and methanol

(d) Isobutylene and methanol.

38, An ether is more volatile than alcohol having the same molecular formula. This is due to *

1 point

(a) intermolecular hydrogen bonding in alcohols.

(b) dipolar character of ethers

(d) intermolecular hydrogen bonding in ethers

39, Cyclohexene is best prepared from cyclohexanol by which of the following: *

1 point

(a) cone. H3PO4

(b) Cone. HCl/ZnCl2

(d) Cone. HBr

40, Wood spirit is known as ......... *

1 point

(a) methanol

(b) ethanol

(d) benzene

41, Acetone reacts with Grignard reagent to form *

1 point

(a) 3° alcohol

(b) 2° alcohol

(d) no reaction

42, The product of acid catalysed hydration of 2-phenylpropene is *

1 point

(a) 3-Phenyl-2-propanol

(b) 1-Phenyl-2-propanol

(d) 2-phenyl-1-propanol.

43, Acid-cataylysed hydration of alkenes except ethene leads to the formation of *

1 point

(a) primary alcohol

(b) secondary or tertiary alcohol

(d) mixture of secondary and tertiary alcohols.

44, During dehydration of alcohols to alkenes by heating with cone. H2SO4 the initial step is *

1 point

(a) formation of an ester

(b) protonation of alcohol molecule

(d) elimination of water

45, Which of the following compounds will react with sodium hydroxide solution in water? *

1 point

(i) C6H5OH

(ii) C6H5CH2OH

(iii) (CH3)3 COH

(iv) C2H5OH

46, Phenol is less acidic than ______________. *

1 point

(i) ethanol

(ii) o-nitrophenol

(iii) o-methylphenol

(iv) o-methoxyphenol

47, Which of the following is most acidic? *

1 point

(i) Benzyl alcohol

(ii) Cyclohexanol

(iii) P-nitroPhenol

(iv) m-nitro phenol

48, Arrange the following compounds in increasing order of boiling point. Propan-1-ol, butan-1-ol, butan-2-ol, pentan-1-ol *

1 point

(i) Propan-1-ol, butan-2-ol, butan-1-ol, pentan-1-ol

(ii) Propan-1-ol, butan-1-ol, butan-2-ol, pentan-1-ol

(iii) Pentan-1-ol, butan-2-ol, butan-1-ol, propan-1-ol

(iv) Pentan-1-ol, butan-1-ol, butan-2-ol, propan-1-ol

49, Monochlorination of toluene in sunlight followed by hydrolysis with aq. NaOH yields. *

1 point

(i) o-Cresol

(ii) m-Cresol

(iii) 2, 4-Dihydroxytoluene

(iv) Benzyl alcohol

50, How many isomers of alcohols possible with molecular formula C4H10O ? *

1 point

(i) 1

(ii) 2

(iii) 3

(iv) 4

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