Alcohols, Phenols and Ethers  MCQs

MCQs of Alcohols, Phenols and Ethers

Showing 61 to 70 out of 120 Questions
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61.
Alcohols are isomeric with _____ .
(a) acids
(b) ethers
(c) esters
(d) aldehydes
Answer:

Option (b)

62.
Choose the correct statement from the following.
(a) As the number of -OH groups increases in alcohol, the boiling point and solubility in water decreases.
(b) As the number of -OH groups increases in alcohol, the boiling point and solubility in water increases.
(c) As the number of -OH groups increases in alcohol, the boiling point increases but solubility in water decreases.
(d) As the number of -OH group increases in alcohol, the boiling point decreases and solubility in water increases.
Answer:

Option (b)

63.
Which of the following will have the least solubility in water ?
(a) Methanol
(b) Ethanol
(c) Isopropyl alcohol
(d) Tertiary butyl alcohol
Answer:

Option (d)

64.
Boiling point of alcohols are higher than corresponding ether because of _____ .
(a) intermolecular σ-bond
(b) intermolecular H-bond
(c) intermolecular covalent bond
(d) intermolecular π-bond
Answer:

Option (b)

65.
In the azeotropic mixture of ethanol and water, what will be the proportion of ethanol and water ?
(a) 95% Ethanol + 5% water
(b) 5% Ethanol + 95% water
(c) 90% Ethanol + 10% water
(d) 10% Ethanol + 90% water
Answer:

Option (a)

66.
Which of the following substances has maximum solubility in water ?
(a) I-Propanol
(b) Ethanol
(c) Glucose
(d) Glycerol
Answer:

Option (c)

67.
Which property of ethane, 1,2-diol is not correct ?
(a) Its boiling point is higher than ethanol.
(b) It is a monomer for a terylene polymer.
(c) It is insoluble in water.
(d) It is a colourless and syrupy liquid.
Answer:

Option (c)

68.
The density of glycerol is higher than propanol due to _____ .
(a) more number of covalent bonds
(b) ionic bonding
(c) hydrogen bonding
(d) van der Waals' attraction
Answer:

Option (c)

69.
As ether is more volatile than an alcohol having the same molecular formula. This is due to _____ .
(a) alcohols having resonance structures
(b) intermolecular hydrogen bonding in ethers
(c) intermolecular hydrogen bonding in alcohols
(d) dipolar character of ethers
Answer:

Option (c)

70.
Intermolecular hydrogen bonding is strongest in _____ .
(a) Methyl amine
(b) Phenol
(c) Formaldehyde
(d) Methanol
Answer:

Option (d)

Showing 61 to 70 out of 120 Questions
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