MCQs of Alcohols, Phenols and Ethers

Showing 51 to 60 out of 120 Questions

51.

Which of the following order is incorrect ?

(a)	Acidic strength of alcohol : 3° > 2° > 1°
(b)	Solubility of alcohol : diol < triol < tetrol
(c)	Boiling points of alcohol : 1° > 2° > 3°
(d)	Rate of reaction of Lucas test : 3° > 2° > 1°

52.

Ortho-nitrophenol is less soluble in water than p and m-nitrophenols because

(a)	o-nitrophenol shows intramolecular H-bonding.
(b)	o-nitrophenol shows intermolecular H-bonding.
(c)	melting point of o-nitrophenol is lower than those of m- and p-isomers.
(d)	o-nitrophenol is more volatile in steam than those of m- and p-isomers.

53.

Find the product for
CH₃CH₂ - O -CH₂-CH₂-O-CH₂- C₆H₅+ HI (excess)

54.

In which of the following reactions of the phenol, the product is not correct ?

(a)	$Phenol \to_{NaOH}^{{({CH}_{3} CO)}_{2} O} Phenyl acetate + {CH}_{3} COONa + H_{2} O$
(b)	$Phenol \overset{dilute {HNO}_{3}}{\to} o - Nitro phenol + p - Nitro phenol$
(c)	$Phenol \to_{{Br}_{2} / {Cs}_{2}}^{Bromination 273 - 278 K} 2, 4, 6 - Tribromo phenol$
(d)	$Phenol \to_{∆}^{Zn / powder} Benzene + ZnO$

55.

What are 'A' and 'B' in the following reaction respectively ?

E t h a n o l \to_{413 K}^{H_{2} S O_{4}} A \to_{∆}^{2 H B r} B

(a)	Ethene and ethyl bromide
(b)	Diethyl ether and ethyl bromide
(c)	Acetic acid and acetyl bromide
(d)	Acetaldehyde and acetyl bromide

56.

In which of the following reactions primary alcohol is not formed ?

57.

Phenol \to_{Powder}^{Zn} X \to_{Anhy . {AlCl}_{3}}^{{CH}_{3} Cl} Y \to_{{KMnO}_{4}}^{Alkaline} Z

.What is Z ?

58.

What is Z in the following reaction ?

Ethanol \overset{{PBr}_{3}}{\to} X \overset{Alcoholic KOH}{\to} Y \to_{(ii) H_{2} O}^{(i) H_{2} {SO}_{4}} Z

59.

Among the following four compounds
(i) phenol
(ii) methylphenol
(iii) meta-nitrophenol
(iv) para-nitrophenol
the acidity order is :

60.

What is the general formula of homologous series of Alcohol ?

Showing 51 to 60 out of 120 Questions