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

Maximum number of active hydrogens are present in

Question # 2

Alcohols of low molecular weight are

Question # 3

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 # 4

Which compound contains - OH in their molecule

Question # 5

Grignard reagent on reaction with a ketone forms

Question # 6

Alcohols, phenols and ethers may be considered as derivative of

Question # 7

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

Question # 8

A 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 original compound is

Question # 9

Dehydration of glycerol give

Question # 10

denaturing of alcohol is done by adding methanol in ethanol:

Question # 11

An organic compound 'X' on treatment with acidified K2Cr2O7gives a compound 'Y' which reacts with I2and sodium carbonate to form Triodomethane. The compound 'X' is

Question # 12

Primary and secondary alcohols on action of red hot copper give

Question # 13

On heating glycerol with conc. Sulphuric acid a compound with unpleasant odour is obtained. The compound is

Question # 14

An alcohol with molecular formula CnH2n+1OH has a chiral carbon atom but does not react with MnO-4/H+what is the least number of carbon atoms such an alcohol could possess

Question # 15

Which structure shows a tertiary alcohol

Question # 16

Organic acid without a carboxylic acid group is

Question # 17

Ethanol is prepared in Pakistan form fermentation of:

Question # 18

Propanone is the product obtained by dehydrogenation of

Question # 19

Which the increase in carbon number of solubility of an alcohol

Question # 20

An organic compound will decolorise dill acidified (aq) KMnO4on warming, but will not decolorise bromine water. What is the compound

Question # 21

Absolute alcohol is obtained by adding rectified apirit in alcohol:

Question # 22

Which of the following statements is correct?

Question # 23

Salol is prepared from

Question # 24

In its reaction with Na, 1 mol of X gives 1 mol of H2(g). What is X

Question # 25

Which one is used as a fuel for internal combustion engines in many European countries and Brazil

Question # 26

How many secondary alcoholic groups are present in the structure of glucose OHC CHOH CHOHCH OH CHOH CH2OH

Question # 27

Diethyl ether is obtained by Williamsons synthesis using

Question # 28

The boiling point of glycerol is more than propanal because of

Question # 29

Phenol is used in the preparation of

Question # 30

Use of ethanol as:

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ECAT Chemistry Chapter 22 Important MCQ's

Sr.# Question Answer
1 A 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 original compound is
A. Primary alcohol
B. Tertiary alcohol
C. alkene
D. ether
2 During dehydration of alcohols to alkenes by heating with conc. H2SO4, the initial step is
A. Formation of an ester
B. Protonation of alcohol molecule
C. Formation of carbocation
D. Elimination of water
3 Which compound does not show hydrogen bonding with water
A. CH3OH
B. C2H5OH
C. CH3- O - CH3
D. C6H5OH
4 Industrial alcohol may be denaturated by the addition of
A. Methyl alcohol
B. Acetone
C. Pyridine
D. Any of the above reagent
5 Which of the following is the most suitable method for removing the traces of water from ethanol?
A. Reacting with Na metal
B. Passing dry HCl through it
C. Distilling it
D. Reacting with Mg
6 Concentration of rectified spirit is:
A. 12%
B. 14%
C. 90%
D. 95%
7 Ethyl alcohol on oxidation with K2Cr2O7gives
A. Acetic acid
B. Acetaldehyde
C. Formaldehyde
D. Formic acid
8 Ethanol can be converted into ethanoic acid by
A. Hydrogenation
B. Hydration
C. oxidation
D. Frmentation
9 Alcohols, phenols and ethers may be considered as derivative of
A. Hydrocarbons
B. Benzene
C. Carboxylic acid
D. Water
10 Glucose in the presence of zymase is converted into
A. Alcohol
B. Acid
C. Ethyl alcohol
D. Ketone

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