ECAT Pre Engineering Chemistry Chapter 22 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 22 Alcohols, Phenols and Ethers

Try The MCQ's Test For ECAT Chemistry Chapter 22 Alcohols, Phenols and Ethers

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ECAT Chemistry Chapter 22 Alcohols, Phenols and Ethers

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Question # 1

In Dow's method, phenol can be made from

Question # 2

Alcohols react with carboxylic acid to produce the class of compounds known as

Question # 3

Ethanol is prepared in Pakistan form fermentation of:

Question # 4

Which of the following process is employed to convert alkyl halide into alcohol?

Question # 5

Which compound shows hydrogen bonding

Question # 6

Alcohol reacts with halogen acid to produce

Question # 7

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

Question # 8

Glucose in the presence of zymase is converted into

Question # 9

How many alcohol (including both structural isomers and stereoisomers) can have the molecular formula C4H10O

Question # 10

Rectified spirit contains alcohol about

Question # 11

Organic acid without a carboxylic acid group is

Question # 12

The boiling point of glycerol is more than propanal because of

Question # 13

Treatment of a secondary alcohol with a suitable oxidizing agent (K2Cr2O7) results in the formation of

Question # 14

A compound of the formula C4H10Oreacts with sodium and undergoes oxidation to give a carbonyl compound which does not reduce Tollen's reagent, the original compound is

Question # 15

Maximum number of active hydrogens are present in

Question # 16

Hydrolytic coversion of sucrose into glucose and fructose is known as

Question # 17

Which structure shows a tertiary alcohol

Question # 18

Alcohols are named by replacing 'e' of alkane with:

Question # 19

Sodium phenoxide reacts with CO2at 400 K and 4.7 atm pressure to give

Question # 20

Use of ethanol as:

Question # 21

When alcohol reacts with concentreated H2SO4intermediate compound formed as

Question # 22

Which of the following compound is known as oil of winter green?

Question # 23

Phenols are derivative of:

Question # 24

Dehydration of glycerol give

Question # 25

Diethyl ether is obtained by Williamsons synthesis using

Question # 26

Which bond shows maximum hydrogen bonding with water?

Question # 27

Which one of the following reacts immediately with conc. HCI in the presence of ZnCI2

Question # 28

Which of the following compound is obtained on passing ethanol vapours on heated Al2O3?

Question # 29

Which of the following is produced when an aqueous solution of butan-2-ol is refluxed with dil acidified KMnO4

Question # 30

Phenol was discovered by:

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Sr.# Question Answer
1 Which alcohol gives only one oxidation product when wormed with dil acidified K2Cr2O7
A. Butan-1-ol
B. Butan-2-ol
C. 2-methyl propan-1-ol
D. 2-methyl propan-2-ol
2 Either, an organic compound has close resemblance in structure and thus a derivative of:
A. Water
B. Oxides of lithium
C. Oxides of magnisium
D. Oxides of aluminium
3 Grignard reagent on reaction with a ketone forms
A. Tertiary alcohol
B. Secondary alcohol
C. Primary alcohol
D. Carboxylic acid
4 Propanone is the product obtained by dehydrogenation of
A. 2-Propanol
B. 1-Propanol
C. Isobutyl alcohol
D. Propanethoil
5 Salol is prepared from
A. Salicylic acid and phenol
B. Salicylic acid and methyl alcohol
C. Both
D. None
6 Phenol gives ---------- Colour with neutral FeCl3solution
A. Violet
B. Green
C. Red
D. Blue
7 Alcohol can be denaturated by adding:
A. Acetone
B. Methanol
C. Pyridine
D. All
8 Which compound shows more hydrogen bonding?
A. C2H6
B. C2H5Cl
C. CH3----O----CH3
D. C2H5OH
9 Which isomers of C5H11OH gives, on dehydration, the greatest number of different alkenes
A. Choice 1
B. Choice 2
C. Choice 3
D. Choice 4
10 Treatment of a secondary alcohol with a suitable oxidizing agent (K2Cr2O7) results in the formation of
A. Ketone
B. Aidehyde
C. Ether
D. Alkyl halide
11 Concentration of rectified spirit is:
A. 12%
B. 14%
C. 90%
D. 95%
12 In Lucas test teriary alcohol make an oily layer
A. Immediately
B. In 10 mins
C. On heating
D. Not
13 The boiling points of alcohols are higher than the corresponding alkanes, This is because
A. Of hydrogen bonding existing between molecules of alcohols
B. Alkanes are dipolar compounds
C. Alcohols are sweet in taste
D. Alcohols are soluble in water
14 Which of the following groups will increase the acidity of phenol?
A. -NO2
B. -CN
C. -X (halogens)
D. All
15 which enzyme is not involved in the fermentation of starch ?
A. Diastase
B. Zymase
C. Urease
D. Invertase
16 Which compound is more soluble in water?
A. C2H5OH
B. C5H5OH
C. CH3OCH3
D. n-Hexanol
17 To prepare ethanol by fernentation the optimum temp. is
A. 10 - 20°C
B. 25 - 30°C
C. 20°C
D. 35°C
18 In Lucas test primary alcohol make as oily layer
A. Immediately
B. In 10 mins
C. On heating
D. Not
19 Maximum number of active hydrogens are present in
A. Acetic acid
B. Glycerol
C. Methane
D. Methanol
20 Scientific study of fermentation was first made by
A. Buchner
B. Liebig
C. Biot
D. Pasteur
21 Mild oxidation of glycerol with H2O2/FeSO4gives
A. Glyceraldehyde
B. Dihydroxy acetone
C. Glycerose
D. None
22
Question Image
A. 1-bromobutane
B. 2-bromobutane
C. 1-bromo-2-methyl propane
D. 2-bromo-2-methyl propane
23 If an electrophile attacks then ______ bond breaks first
A. C - H
B. O - H
C. C - O
D. None of these
24 Diethyl ether is obtained by Williamsons synthesis using
A. Ethanol + Na + C2H5Br
B. Ethanol + Mg + C2H5Br
C. Methanol + Na + CH3Br
D. Methanol + Mg + CH3Br
25 Picric acid is
A. 2, 4, 6-Trinitrotoluene
B. 2, 4, 6-Tribomoethanol
C. 2, 4,6-Trinitrophenol
D. Para-Nitrophenol
26 Methyl alcohol is not used
A. As a solvent
B. A an anti-freezing agent
C. As a substitute for petrol
D. For denaturing of ethyl alcohol
27 Which of the following is correct?
A. Reduction of any aldehyde gives secondary alcohol
B. Reaction of vegetable oil with H2SO4gives glycerine
C. Alcoholic iodine with NaOH gives iodoform
D. Sucrose on reaction with NaCl gives invert sugar
28 A compound of the formula C4H10Oreacts with sodium and undergoes oxidation to give a carbonyl compound which does not reduce Tollen's reagent, the original compound is
A. Diethyl ether
B. n-Butyl alcohol
C. Isobutyl alcohol
D. sec-Butyl alcohol
29 Baukelite is a polymer obtained from two monomers
A. Phenol and ethanol
B. Phenol and methanol
C. Phenol and methanal
D. Phenol and acetone
30 denaturing of alcohol is done by adding methanol in ethanol:
A. 10%
B. 20%
C. 30%
D. 40%

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