Alcohols, Phenols and Ethers Free Question Bank
Acid catalysed hydration of alkenes except ethene leads to the formation of
A mixture of secondary and tertiary alcoholsB mixture of primary and secondary alcohols
C secondary or tertiary alcohol
D primary alcohol
E NA
Among the alkenes which one produces tertiary butyl alcohol on acid hydration
A (CH3)2C = CH2B CH3 – CH = CH – CH3
C CH3 – CH2 – CH = CH2
D CH3 – CH = CH2
E NA
Among the following, which is least acidic?
A phenolB o-cresol
C p-nitrophenol
D p-chlorophenol
E NA
An ether is more volatile than an alcohol having the same molecular formula. This is due toÂ
A dipolar character of ethersB alcohols having resonance structures
C inter-molecular hydrogen bonding in ethers
D inter-molecular hydrogen bonding in alcohols
E NA
An organic compound A containing C, H and O has a pleasant odour with boiling point of 78° C. On boiling A with concentrated H2SO4, a colourless gas is produced gas is produced which decolourises bromine water and alkaline KMnO4. The organic liquid A is
A C2H5COOCH3B C2H5OH
C C2H5Cl
D C2H6
E NA
Consider the following reaction C2H5OH + H2SO4Â → Product Among the following, which one cannot be formed as a product under any conditions?
A EthyleneB Ethyl-hydrogen sulphate
C Diethyl ether
D Acetylene
E NA
Denatured alcohol is
A Rectified spirit + methanol + naphthaB Undistilled ethanol
C Rectified spirit
D Ethanol + methanol
E NA
Formation of diethyl ether from ethanol is based on a
A dehydration reactionB dehydrogenation reaction
C hydrogenation reaction
D heterolytic fission reaction
E NA
From amongst the following alcohols the one that would react fastest with conc. HCl and anhydrous ZnCl2, is
A 2-Methylpropan-2-olB 2-Butanol
C 1-Butanol
D 2-Methylpropanol
E NA
n-propyl alcohol and isopropyl alcohol can be chemically distinguished by which reagent:
A PCl5B Reduction
C Oxidation with Potassium dichromate
D Ozonolysis
E NA
Which one of the following gases is liberated when ethyl alcohol is heated with methyl magnesium iodide?
A MethaneB Ethane
C Carbon dioxide
D Propane
E NA
Phenol can be distinguished from ethanol by the following reagents except
A sodiumB NaOH/I2
C neutral FeCl3
D Br2/H2O
E NA
The compound which gives turbidity immediately with Lucas reagent at room temperature is _____.
A 2-methyl propan-1-olB butan-1-ol
C butan-2-ol
D 2-methyl propan-2-ol
E NA
The conversion of m-nitrophenol to resorcinol involves respectively
A diazotization, reduction and hydrolysisB hydrolysis, diazotization and reduction
C reduction, diazotization and hydrolysis
D hydrolysis, reduction and diazotization
E NA
The correct order of acid strength of the following compounds is A. Phenol B. p-Cresol C. m-Nitrophenol D. p-Nitrophenol
A A > B > D > CB C > B > A > D
C D > C > A > B
D B > D > A > C
E NA
The correct order of decreasing acidity of nitrophenols will be
A m-Nitrophenol > p-Nitrophenol > o-NitrophenolB o-Nitrophenol > m-Nitrophenol > p-Nitrophenol
C p-Nitrophenol > m-Nitrophenol > o-Nitrophenol
D p-Nitrophenol > o-Nitrophenol > m-Nitrophenol
E NA
The enzymes which are used to convert starch into ethyl alcohol are
A maltase, diastaseB diastase, maltase, zymase
C invertase, zymase
D invertase, diastase, maltase
E NA
When phenol is treated with CHCl3 and NaOH, the product formed is:
A Salicylic acidB Salicylaldehyde
C Benzaldehyde
D Benzoic acid
E NA
When Phenyl Magnesium Bromide reacts with tert. butanol, which of the following is formed?
A Tert. butyl methyl etherB Benzene
C Tert. butyl benzene
D Phenol
E NA
Which of the following compounds when heated with CO at 150° C and 500 atm pressure in presence of BF3 forms ethyl propionate?Â
A C2H5OHB CH3OCH3
C C2H5OC2H5
D CH3OC2H5
E NA
Which of the following conditions are used for the conversion of ethanol to ethylene?
A dil H2SO4 / 100°CB dil H2SO4 / 140°C
C Con H2SO4 / 70°C
D Con H2SO4 / 170°C
E NA
Which of the followings is correct?
A Acetophenone is an etherB Diastase is an enzyme
C Cycloheptane is an aromatic compound
D All the above
E NA
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