alcohol, phenol and ethers
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Multiple Choice Questions on preparation and properties of Alcohol, Phenol and EthersTRANSCRIPT
Alcohol, Phenol and Ethers
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1Which one is primary alcohol( )Butaon-1-ol
( )Buten-2-ol
( )2,3-dimethylhexane-4-ol
( )Propan-2-ol
Single Answer
2Ethyl alcohol is industrially prepared from ethylene by( )Permanganate oxidation
( )Absorbing in H2SO4 followed by hydrolysis
( )Fermentation
( )Catalytic reduction
Single Answer
3Which of the following cannot be produced by acidic dehydration of alcohols?( )Aldehydes
( )Alkyl hydrogen sulphate
( )Ethers
( )Alkene
Single Answer
4Dehydration of glycerol gives( )Acrolein
( )Propene
( )Propane
( )Benzene
Single Answer
5Maximum number of active hydrogens are present in( )Methanol
( )Methane
( )Acetic acid
( )Glycerol
Single Answer
6Salol is prepared from( )Salicylic acid and phenol
( )Salicylic acid and methyl alcohol
( )Both
( )None
Single Answer
7Phenol is heated with CCl4 and alkaline KOH when salicylic acid is produced. The reaction is known as( )Sommelet reaction
( )Friedel-Craft reaction
( )Rosenmund's reaction
( )Reimer-Tiemann's reaction
Single Answer
8Ethanol containing one methanol is called( )Power alcohol
( )Rectified spirit
( )Methylated spirit
( )Absolute spirit
Single Answer
9Mild oxidation of glycerol with H2O2/FeSO4 gives( )Glyceraldehyde
( )Dohyroxy acetone
( )Glycerose
( )None
Single Answer
10Hydrolytic conversion of sucrose into glucose and fructose is known as( )Insertion
( )Inhibition
( )Induction
( )Inversion
Single Answer
11Alcohols of low molecular weight are( )Insoluble in water
( )Soluble in water
( )Soluble in water on heating
( )Insoluble in all solvents
Single Answer
12Alcohols react with Grignard's reagent to form( )Alkynes
( )All these
( )Alkanes
( )Alkenes
Single Answer
13Alcohol fermentation is brought about by the action of( )Invertase
( )O2
( )Yeast
( )CO2
Single Answer
14Primary and secondary alcohols on action of red hot copper give( )Only ketones
( )Only aldehydes
( )Aldehydes and ketones respectively
( )Ketones and aldehydes respectively
Single Answer
15Ethyl alcohol on oxidation with K2Cr2O7 gives( )Acetic acid
( )Acetaldehyde
( )Formic acid
( )Formaldehyde
Single Answer
16The strongest acid among the following aromatic compound is( )O-nitrophenol
( )P-nitrophenol
( )P-chlorophenol
( )M-nitrophenol
Single Answer
17Which of the following groups will increase the acidity of phenol?( )-NO2
( )-CN
( )-X(halogen)
( )All
Single Answer
18Which is used as an antifreeze?( )Methanol
( )Water
( )Ethyl alcohol
( )Glycol
Single Answer
19Which one of the following compounds gives characteristic deep colour with FeCl3 solution?( )Ethanol
( )Phenol
( )Acetone
( )Acetic acid
Single Answer
20C2H5OH can be differentiated from CH3OH by( )Reaction with HCl
( )Iodoform test
( )Solubility in water
( )Reaction with NH3
Single Answer
21Scientific study of fermentation was first made by( )Biot
( )Pasteur
( )Buchner
( )Liebig
Single Answer
22Phenol is more readily soluble in( )Dil.HCl
( )NaOH sol
( )Both NaOH and HCl
( )Sodium bicarbonate solution
Single Answer
23On heating glycerol with conc.H2SO4, a compound with unpleasant odour is obtained. The compound is( )Glycerol sulphate
( )Methyl alcohol
( )Formic acid
( )Prop-2-enal
Single Answer
24Grignard reagent on reaction with ketone forms( )Carboxylic acid
( )Tertiary alcohol
( )Primary alcohol
( )Secondary alcohol
Single Answer
25Sodium phenoxide reacts with CO2 at 400 K and 4.7 atm pressure to give( )Benzoic acid
( )Sodium salicylate
( )Salicyl aldehyde
( )Catechol
Single Answer
26The order of reactivity of halogen acids for reaction with C2H5OH is( )HBr>HCl>HI
( )HI>HBr>HCl
( )HCl>HBr>HI
( )HBr>HI>HCl
Single Answer
27Which of the following statements is correct?( )Phenol is more acidic than ethanol
( )Phenol is more acidic than CH3COOH
( )Phenol is more acidic than carbonic acid
( )Phenol is less acidic than ethyl alcohol
Single Answer
28Isopropyl alcohol on oxidation gives( )Acetaldehyde
( )Acetone
( )Ether
( )Ethylene
Single Answer
29Which of the following statements is incorrect?( )Alcohol with less number of carbon atoms is more soluble in water than alcohol with more number of carbon atoms
( )Alcohol produces H2 by reaction with sodium metal
( )Ethyl alcohol is heavier than water
( )Ethyl alcohol evaporates more quickly
Single Answer
30Which of the following process is employed to convert alkyl halide into alcohol?( )Dehydrohalogenation
( )Substitution
( )Molecular rearrangement
( )Addition
Single Answer
31The boiling point of glycerol is more than propanal beacuse of( )Hybridisation
( )H-bonding
( )Resonance
( )All these factors
Single Answer
32Zn powder + Ph-OH---------->X. In this reaction the product X will be( )Anisole
( )Phenyl acetate
( )Benzene
( )Benzaldehyde
Single Answer
33An organic compound 'X' on treatment with acidified K2Cr2O7 gives a compound 'Y' which reacts with I2 and sodium carbonate to form triodomethane. The compound 'X' is( )CH3COCH3
( )CH3CHO
( )CH3CH(OH)CH3
( )CH3OH
Single Answer
341-Phenylathanol can be prepared by reaction of benzaldehyde with( )Mrthyl iodide and magnesium
( )C2H5I and Mg
( )Methyl bromide and AlBr3
( )Methyl bromide
Single Answer
35The reaction of aromatic acyl chloride and phenol in the presence of a base NaOH or pyridine is called( )Kolbe's reaction
( )Sandmeyer's reaction
( )Schotten Baumann reaction
( )Perkin's reaction
Single Answer
36Which of the following compound is known as oil of winter green?( )Phenyl acetate
( )Methyl salicylate
( )Phenyl salicylate
( )Phenyl benzoate
Single Answer
37Ethylene reacts with 1% cold alkaline KMnO4 to give( )Oxalic acid
( )Acetone
( )Ethylene glycol
( )Formaldehyde
Single Answer
38Phenol gives _________ colour with neutral FeCl3 solution.
___________________________________
Fill In the Blank
39Which of the following will not give iodoform test?( )Ethanal
( )Benzyl alcohol
( )Isopropyl alcohol
( )Ethanol
Single Answer
40Which of the following is the most suitable method for removing the traces of water from ethanol?( )Reacting with Mg
( )Distilling it
( )Reacting with Na metal
( )Passing dry HCl through it
Single Answer
41Na reacts with phenol to produce( )CO gas
( )Benzene
( )H2 gas
( )CO2 gas
Single Answer
422,4,6-trinitrophenol is known as
___________________________________
Fill In the Blank
43Propanone is the product obtained by dehydrogenation of( )Propanethoil
( )1-propanol
( )2-propanol
( )Isobutyl alcohol
Single Answer
44When ethylene glycol is heated with acidified potassium permanganate, the main organic compound obtained is( )Formic acid
( )Oxalic acid
( )Glyoxal
( )Ethanol
Single Answer
45Which of the following compound is obtained on passing ethanol vapours on heated Al2O3?( )Ethylether
( )Acetone
( )Ethanol
( )Ethane
Single Answer
46Which of the following is correct?( )Sucrose on reaction with NaCl gives invert sugar
( )Reaction of vegetable oil with H2SO4 gives glycerine
( )Reduction of any aldehyde gives secondary alcohol
( )Alcoholic iodine with NaOH gives iodoform
Single Answer
47A compound of formula C4H10O reacts with sodium and undergoes oxidation to give a carbonyl compound wich does not reduce Tollen's reagent, the original compound is( )Diethyl ether
( )N-butyl alcohol
( )Sec-butyl alcohol
( )Isobutyl alcohol
Single Answer
48A compound is soluble in conc.H2SO4, it does not decolourise bromine in carbon tetrachloride but is oxidized by chromic anhydride in aqueous sulphuric acid within two seconds, turning orange solution to blue, green and then opaque. The orignal compound is( )Primary alcohol
( )Tertiary alcohol
( )Alkene
( )Ether
Single Answer
493 moles of ethanol react with one mole of phosphorus tribromide to form 3 moles of bromoethane and one mole of X. Which of the following is X?( )H3PO2
( )HPO3
( )H3PO3
( )H3PO4
Single Answer
50An organic compound A reacts with methyl magnesium iodide to form an addition product which on hydrolysis forms the compound B. Compound B gives blue colour salt in Victor Meyer's test. The compound A and B are respectively( )Acetaldehyde, ethyl alcohol
( )Acetone, isopropyl alcohol
( )Acetaldehyde, tertiary butyl alcohol
( )Acetaldehyde, isopropyl alcohol
Single Answer
51Organic acid without a carboxylic acid group is( )Ascorbic acid
( )Picric acid
( )Oxalic acid
( )Vinegar
Single Answer
52During dehydration of alcohols to alkenes by heating with conc.H2SO4, the initial step is( )Protonation of alcohol molecule
( )Elimination of water
( )Formation of carbocation
( )Formation of an ester
Single Answer
53Which is more acidic?( )P-nitrophenol
( )Phenol
( )M-cresol
( )O-cresol
Single Answer
54The only alcohol that can be prepared by indirect hydration of alkene is( )Isobutyl alcohol
( )Propyl alcohol
( )Ethyl alcohol
( )Methyl alcohol
Single Answer
55When alcohol reacts with conc.H2SO4 intermediate compound formed is( )Carbonium ion
( )Alkoxy ion
( )Alkyl hydrogen sulphate
( )None of these
Single Answer
56Carbolic acid is
___________________________________
Fill In the Blank
57Williamson's synthesis is used to prepare
___________________________________
Fill In the Blank
58When phenol is distilled with zinc dust, it is reduced to( )Benzaldehyde
( )Hexanol
( )Toluene
( )Benzene
Single Answer
59Which one is used as a fuel for internal combustion engines in many european countries?( )CH3COOH
( )C2H2
( )CH3OH
( )C2H5OH
Single Answer
60Which one of the following immediately reacts with conc.HCl in the presence of ZnCl2?( )Ether
( )Secondary alcohol
( )Tertiary alcohol
( )Primary alcohol
Single Answer
61The reaction of sodium with ethanol gives( )H2
( )H2O
( )CH3OH
( )NaH
Single Answer
62Which of the following is an isomer of ethanol?( )CH3OH
( )CH3OCH3
( )C2H5OC2H5
( )C2H5OH
Single Answer
63Industrial alcohol may be denatured by the addition of( )Any of these
( )Pyridine
( )Acetone
( )Methyl alcohol
Single Answer
64Rectified spirit contains alcohol about( )85%
( )95%
( )80%
( )90%
Single Answer
65Ethanol can be converted into ethanoic acid by( )Hydration
( )Fermentation
( )Hydrogenation
( )Oxidation
Single Answer
66Which compound is more soluble in water?( )N-hexanol
( )C2H5OH
( )C6H5OH
( )CH3OCH3
Single Answer
67Which compound shows H-bonding?( )C2H6
( )C2H5OH
( )C2H5Cl
( )CH3-O-CH3
Single Answer
68Which of the following is produced when an aqueous solution of butan-2-ol is refluxed with dil acidified KMnO4?( )Butanone
( )Butanoic acid
( )Butanol
( )Butane
Single Answer
69Which of the following will not react with sodium metal to release hydrogen?( )C6H5OH
( )C6H5CH2OH
( )CH3CH2OH
( )CH3CH2CH3
Single Answer
70Which one of the following correctly describe the acid properties of phenol?( )Stronger than carboxylic acid
( )Stronger than HCl
( )An acid stronger than carbonic acid
( )Weaker than carboxylic acid
Single Answer
71Which of the following is weakly acidic in nature?( )Alcohol
( )Phenol
( )Amide
( )Aldehyde
Single Answer
72Dow's process is used for preparation of
___________________________________
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73Oxidation of 2-propanol gives
___________________________________
Fill In the Blank
74Ethyl alcohol may be identified by( )Ring test
( )Iodoform test
( )Bazeyer's test
( )Tollen's test
Single Answer
75Glucose in presence of zymase is converted into
___________________________________
Fill In the Blank
76The malt-sugar in presence of yeast or invertase gives
___________________________________
Fill In the Blank
77Oxidation of methyl alcohol gives
___________________________________
Fill In the Blank
78Methyl alcohol possesses( )Burning taste
( )Poisonous
( )Causing blindness
( )All these
Single Answer
79Which of the following is known as wood spirit?( )Propyl alcohol
( )Ethyl alcohol
( )Butyl alcohol
( )Methyl alcohol
Single Answer
80Which of the following is used as anesthetics?( )Alcohol
( )Diethyl ether
( )Phenol
( )Dimethyl ether
Single Answer
81Nitration of phenol gives( )O-nitrophenol
( )P-nitrophenol
( )M-nitrophenol
( )Both o and p-nitrophenol
Single Answer
82Alcohol reacts with halogen acid to produce
___________________________________
Fill In the Blank
83When phenol is reduced in Zn dust, we get( )Cyclohexane
( )Benzyne
( )Benzene
( )Cyclohexene
Single Answer
84According to lewis concept, ethers behave as( )Acid
( )Base
( )Acid as well as a base
( )None
Single Answer
85Methyl alcohol is not used( )For denaturing of ethyl alcohol
( )As an anti-freezing agent
( )As a solvent
( )As a substitute for petrol
Single Answer
86Which compound is called universal solvent?( )H2O
( )C2H5OH
( )CH3-O-CH3
( )CH3OH
Single Answer
87Which enzyme is not involved in fermentation of starch?( )Zymase
( )Urease
( )Invertase
( )Diastase
Single Answer
88Ethanol can be converted into ethanoic acid by( )Fermentation
( )Hydration
( )Hydrogenation
( )Oxidation
Single Answer
89Which compound will not dissolve in water?( )C2H5OH
( )CH3CH2CH2OH
( )CH3OH
( )C6H6
Single Answer
90Which compound is more soluble in water?( )CH3OCH3
( )C2H5OH
( )Benzene
( )Hexane
Single Answer
91Which compound does not show hydrogen bonding with water?( )C6H5OH
( )CH3OH
( )C2H5OH
( )CH3-O-CH3
Single Answer
92Which compound shows hydrogen bonding?( )CH3-O-CH3
( )C2H6
( )C2H5Cl
( )C2H5OH
Single Answer
93Diethyl ether is obtained by Williamson's synthesis using( )Ethanol + Na + C2H5Br
( )Methanol + Mg + CH3Br
( )Methanol + Na + CH3Br
( )Ethanol + Mg + C2H5Br
Single Answer
94IUPAC name of diethyl ether is
___________________________________
Fill In the Blank
95Methanol and ethanol can be distinguished by( )Lucas test
( )Dichromate/H2SO4 oxidation test
( )Flame test
( )Iodoform test
Single Answer
96The test used for the detection of ethanol in the mouth of a drunk driver is that the drunk driver is asked to blow air into a solution of K2Cr2O7 and H2SO4. The colour changes, if the driver is drunk( )From orange to green
( )From pink to green
( )From pink to colourless
( )From orange to colourless
Single Answer
97When sodium metal reacts with alcohols( )Hydrogen gas is evolved
( )Alcohol is reduced
( )Sodium hydroxide is obtained
( )Alcohol is polymerized
Single Answer
98The boiling points of alcohols are higher than corresponding alkanes. This is because( )Alkanes are dipolar compounds
( )Alcohols are sweet in taste
( )Alcohols are soluble in water
( )Of H-bonding in between molecules of alcohol
Single Answer
99Which is not the common name of an isomeric alcohol with formula C4H10O( )1-butanol
( )Ter-butyl alcohol
( )Sec-butyl alcohol
( )Isobutyl alcohol
Single Answer
100Alcohols, phenol and ethers may be considered as derivatives of( )Benzene
( )Hydrocarbons
( )Water
( )Carboxylic acids
Single Answer
101Formula of secondary alcohol is( )R-OH
( )R3COH
( )R2CHOH
( )R-CH2OH
Single Answer
102Methyl alcohol on oxidation with acidified K2Cr2O7 gives( )CH3CHO
( )CH3COCH3
( )CH3COOH
( )HCOOH
Single Answer
103An alcohol produced in the manufacture od soap is( )Ethylene glycol
( )Ethanol
( )Butanol
( )Glycerol
Single Answer
104Haloform reaction is used to prepare( )CHCl3
( )CCl4
( )Halogens
( )Halides
Single Answer
105Ethylidene chloride (CH2CCl2) on hydrolysis with NaOH gives
___________________________________
Fill In the Blank
106Action of nitrous acid on ethyl amine gives( )C2H6
( )C2H5OH
( )NH3
( )Nitromethane
Single Answer
107Iodoform can not be prepared from( )CH3COCH3
( )CH3OH
( )CH3CHO
( )C2H5OH
Single Answer
108When glycerol is heated with KHSO4, the compound formed is ( )Gluconic acid
( )Dihydroxy acetone
( )Glyceraldehyde
( )Acrolein
Single Answer
109Which one of the following is not a phenol?( )M-cresol
( )O-cresol
( )Benzyl alcohol
( )P-cresol
Single Answer
110Which of the following does not give effervescence with Na2CO3?( )Picric acid
( )Benzoic acid
( )Benzene sulphonic acid
( )Phenol
Single Answer
111Which one of the following is more acidic?( )H2O
( )CH3CH2CH2OH
( )C2H5OH
( )CH3OH
Single Answer
112Phenol can be distinguished from ethyl alcohol by all reagent except( )FeCl3
( )Na
( )Br2/H2O
( )NaOH
Single Answer
113Which one of the following is not soluble in H2SO4?( )C4H10
( )H2O
( )Ether
( )C2H5OH
Single Answer
114Bond angle in ether is
___________________________________
Fill In the Blank
115Ether have boiling point higher than alkanes but lower than alcohol because( )Ethers possess H-bonds and are polar
( )Neither they have H-bonds nor are polar
( )Ethers do not possess H-bonds and are non polar
( )Ethers are polar but do not have H-bonds
Single Answer
116Water gas in presence of excess of H2 at 450C, 200 atm pressure and in the presence of ZnO + Cr2O3 catalyst gives( )Methanal
( )Carbonic acid
( )Methanol
( )Ethanol
Single Answer
117Alcohol of 50 "proof" is( )100% pure
( )70% pure
( )50% pure
( )80% pure
Single Answer
118Which one of the following undergoes dehydration with ease?( )CH3-OH
( )C2H5OH
( )Ter.butyl alcohol
( )Isopropyl alcohol
Single Answer
119Which of the following is more reactive towards sodium metal?( )Primary alcohol
( )Tertiary alcohol
( )Ether
( )Secondary alcohol
Single Answer
120Which one of the following is more soluble in water?( )Butanol
( )Heptanol
( )Methanol
( )Hexanol
Single Answer
121Which of the following undergoes estrification with ease?( )Ter.butyl alcohol
( )C2H5OH
( )Isopropyl alcohol
( )Ter.pentyl alcohol
Single Answer
122The reagent used to distinguish primary, secondary and tertiary alcohols is( )Nessseler's reagent
( )Baeyer's reagent
( )Tollen's reagent
( )Lucas reagent
Single Answer
123Which one of the following compounds does not liberate CO2 in reaction with Na2CO3?( )H2SO4
( )Phenol
( )HNO3(dil)
( )HCl (dil)
Single Answer
124The most acidic among the following is( )Methanol
( )Ether
( )Acetylene
( )Phenol
Single Answer
125The alcohol which resists oxidation is( )Methanol
( )Ethanol
( )Isopropyl alcohol
( )Ter.butyl alcohol
Single Answer
126The least reactive compound among the following is( )H-CO-H
( )CH3-O-CH3
( )CH3COOH
( )CH3OH
Single Answer
127Detol is a very effective antiseptic. It is a derivate of( )Ether
( )Alcohol
( )Ketone
( )Phenol
Single Answer
128The compound which does not form iodoform( )Acetone
( )Methyl alcohol
( )Ethyl alcohol
( )Acetaldehyde
Single Answer
129In estrification, which bond of alcohol undergoes cleavage?( )C-H
( )C-O
( )O-H
( )C-C
Single Answer
130Which of the following does not undergo dehydration reaction?( )Propanol
( )Ethanol
( )Butanol
( )Methanol
Single Answer
131Methylated spirit is ethyl alcohol to which _____% methanol has been added.( )50
( )10
( )20
( )70
Single Answer