MCQs of Alcohols, Phenols and Ethers

Showing 91 to 100 out of 120 Questions

91.

The hybridisation of C and O in phenol is _____ and _____ respectively.

92.

Aqueous solution of phenol _____ .

(a)	turns red litmus blue and pH is < 7.00
(b)	turns blue litmus red and pH < 7.00
(c)	has no effect on litmus and pH = 0.00
(d)	on adding drop of phenolphthalin turns to red and pH ≈ 12.00

93.

Phenol is more acidic in comparison to aliphatic alcohol, because _____ .

(a)	phenol is more soluble in polar solvent
(b)	phenoxide ion is stable due to resonance
(c)	there is no resonance in phenoxide ion
(d)	alcohol can never give H-atom

94.

C₆H₅Cl

\to_{633 K, 300 bar}^{{NaOH}_{(aq)} (6 - 8 %)}

X, where X = _____ .

95.

Salicylaldehyde is obtained when phenol is heated with CHCl₃ and aqueous NaOH. This reaction is known by which name ?

96.

Which of the following product is obtained on performing Riemer-Tiemann reaction on phenol ?

97.

Salicyldehyde can be prepared by _____ .

(a)	Fitting reaction
(b)	Reimer - Tiemann reaction
(c)	Fries rearrangement reaction
(d)	Kolbe - Schmitt reaction

98.

The correct order of solubility of isomeric alcohols in water is _____ .

99.

\underset{X}{C_{2} H_{6} O} \overset{[O]}{\to} \underset{Y}{C_{2} H_{4} O} \overset{[O]}{\to} \underset{X}{C_{2} H_{4} O_{2} .} " X "

= _____ .

100.

Rank the following compounds in order of increasing melting point (lowest → highest).

(1) o-Nitrophenol (2) m-Nitrophenol

(3) p-Nitrophenol

Showing 91 to 100 out of 120 Questions