61.
The major product of the following reaction is :
A
B
C
D
Answer :
62. Which of the following is not true in case of reaction with heated copper at $${300^ \circ }C?$$
A
Phenol → Benzyl alcohol
B
Secondary alcohol → Ketone
C
Primary alcohol → Aldehyde
D
Tertiary alcohol → Olefin
Answer :
Phenol → Benzyl alcohol
63. Monochlorination of toluene in sunlight followed by hydrolysis with $$aq.\,NaOH$$ yields
A
$$o$$ - cresol
B
$$m$$ - cresol
C
2, 4-dihydroxytoluene
D
benzyl alcohol
Answer :
benzyl alcohol
64. The process of converting alkyl halides into alcohols involves
A
addition reaction
B
substitution reaction
C
dehydrohalogenation reaction
D
rearrangement reaction
Answer :
substitution reaction
65. Picric acid is a yellow coloured compound. Its chemical name is
A
$$m$$ - nitrobenzoic acid
B
2, 4, 6 - trinitrophenol
C
2, 4, 6 - tribromophenol
D
$$p$$ - nitrophenol
Answer :
2, 4, 6 - trinitrophenol
66.
The decreasing order of acidic strength of the following is
A
I > III > IV > II > V
B
IV > III > V > II > I
C
II > V > IV > III > I
D
III > V > II > I > IV
Answer :
IV > III > V > II > I
67. IUPAC name of the compound \[C{{H}_{3}}\underset{\begin{smallmatrix} |\,\,\,\,\,\, \\ C{{H}_{3}}\, \end{smallmatrix}}{\mathop{-CH-}}\,OC{{H}_{3}}\] is
A
1-methoxy-1-methylethane
B
2-methoxy-2-methylethane
C
2-methoxypropane
D
isopropylmethyl ether
Answer :
2-methoxypropane
68. How many alcohols with molecular formula $${C_4}{H_{10}}O$$ are chiral in nature?
A
1
B
2
C
3
D
4
Answer :
1
69. Unlike phenol, 2, 4-dinitrophenol is soluble in sodium carbonate solution in water because
A
presence of two $$ - N{O_2}$$ groups in the ring makes 2, 4-dinitrophenol a stronger acid than phenol
B
presence of two $$ - N{O_2}$$ groups in the ring makes 2, 4-dinitrophenol a weaker acid than phenol
C
presence of two $$ - N{O_2}$$ groups make the hydrogen bonding easier, making 2, 4-dinitrophenol soluble
D
nitro group reacts with $$N{a_2}C{O_3}$$ while $$-OH$$ group does not.
Answer :
presence of two $$ - N{O_2}$$ groups in the ring makes 2, 4-dinitrophenol a stronger acid than phenol
70.
Product of the reaction is :
A
B
C
D
Answer :
