question_answer 1)
The correct statement about the compounds A, B, and C
A)
A and B are identical done
clear
B)
A and B are diastereomers done
clear
C)
A and C are enantiomers done
clear
D)
A and B are enantiomers done
clear
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question_answer 2)
\[{{C}_{6}}{{H}_{5}}CHO+HCN\xrightarrow{{}}{{C}_{6}}{{H}_{5}}-\underset{H}{\overset{H}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,}}}\,-CN\] The product would be
A)
a racemate done
clear
B)
optically active done
clear
C)
a meso compound done
clear
D)
a mixture of diastereomers done
clear
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question_answer 3)
Arrange the following (w, x, y, z) in decreasing order of their boiling points:
A)
\[w>x>z>y\] done
clear
B)
\[w>x>y>z\] done
clear
C)
\[w>z>y>x\] done
clear
D)
\[w>z>x>y\] done
clear
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question_answer 4)
How many degrees of unsaturation are there in the following compound?
A)
6 done
clear
B)
7 done
clear
C)
10 done
clear
D)
11 done
clear
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question_answer 5)
Arrange in the order of increasing acidity.
A)
\[III<I<II\] done
clear
B)
\[I<III<II\] done
clear
C)
\[III<II<I\] done
clear
D)
\[II<I<III\] done
clear
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question_answer 6)
Which of the following is optically active?
A)
\[C{{H}_{3}}-\underset{OH}{\overset{H}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,}}}\,-\underset{OH}{\overset{H}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,}}}\,-{{C}_{2}}{{H}_{5}}\] done
clear
B)
\[C{{H}_{3}}-CH(OH)-C{{H}_{3}}\] done
clear
C)
\[C{{H}_{3}}-\underset{O}{\mathop{\underset{\parallel }{\mathop{C}}\,}}\,-\underset{Br}{\overset{Br}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,}}}\,-COOH\] done
clear
D)
\[C{{H}_{3}}-C{{H}_{2}}-\overset{O}{\mathop{\overset{\parallel }{\mathop{C}}\,}}\,-C{{H}_{3}}\] done
clear
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question_answer 7)
Keto-enol tautomerism is observed in:
A)
\[{{H}_{5}}{{C}_{6}}-\overset{O}{\mathop{\overset{\parallel }{\mathop{C}}\,}}\,-C{{H}_{2}}-\overset{O}{\mathop{\overset{\parallel }{\mathop{C}}\,}}\,-{{C}_{6}}{{H}_{5}}\] done
clear
B)
\[{{H}_{5}}{{C}_{6}}-\overset{O}{\mathop{\overset{\parallel }{\mathop{C}}\,}}\,-C{{H}_{3}}\] done
clear
C)
\[{{H}_{5}}{{C}_{6}}-\overset{O}{\mathop{\overset{\parallel }{\mathop{C}}\,}}\,-H\] done
clear
D)
Both [a] and [b] done
clear
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question_answer 8)
The change in the state of hybridization of the asterisked carbon in the following reaction. \[C{{H}_{3}}\overset{*}{\mathop{C}}\,N\xrightarrow{{{H}_{2}}O}C{{H}_{3}}\overset{*}{\mathop{C}}\,ON{{H}_{2}}\] is
A)
\[s{{p}^{3}}\] to \[s{{p}^{2}}\] done
clear
B)
\[s{{p}^{3}}\] to sp done
clear
C)
sp to\[s{{p}^{2}}\] done
clear
D)
\[s{{p}^{2}}\] to \[s{{p}^{3}}\] done
clear
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question_answer 9)
In the reaction shown below the six membered ring is generated by shifting which bond
A)
A done
clear
B)
B done
clear
C)
C done
clear
D)
D done
clear
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question_answer 10)
Which among the following is substitution reaction?
A)
B)
C)
\[{{R}_{3}}COH\xrightarrow[Conc.\,HCl]{Anhy.Znc{{l}_{2}}}Turbidity\] done
clear
D)
All of these done
clear
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question_answer 11)
In allene \[({{C}_{3}}{{H}_{4}})\], the type(s) of hybridization of the carbon atoms is (are):
A)
\[sp\] and \[s{{p}^{3}}\] done
clear
B)
\[s{{p}^{2}}\] and \[sp\] done
clear
C)
only \[s{{p}^{2}}\] done
clear
D)
\[s{{p}^{2}}\] and \[s{{p}^{3}}\] done
clear
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question_answer 12)
The correct IUPAC name of the following compound
is:
A)
4 - methyl - 3 - ethylhexane done
clear
B)
3 - ethyl - 4 - methylhexane done
clear
C)
3, 4- ethylmethylhexane done
clear
D)
4 - ethyl - 3 - methylhexane done
clear
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question_answer 13)
Which molecule will be most reactive for \[{{S}_{N}}1\] reaction?
A)
B)
C)
D)
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question_answer 14)
Arrange the following in decreasing order of solubility in water
A)
\[I>III>II\] done
clear
B)
\[III>II>I\] done
clear
C)
\[II>III>I\] done
clear
D)
All are equally soluble done
clear
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question_answer 15)
The correct priorities for the substituents shown below, according to the E-Z sequence rule is
I. \[-CN\] II. \[-CBr{{\left( C{{H}_{3}} \right)}_{2}}\] III. \[-COOH\] IV. \[-C{{H}_{2}}-\overset{O}{\mathop{\overset{\parallel }{\mathop{C}}\,}}\,-OC{{H}_{3}}\] V. \[-\overset{O}{\mathop{\overset{\parallel }{\mathop{C}}\,}}\,-H\]
A)
II, III, V, I, IV done
clear
B)
V, II, I, IV, III done
clear
C)
III, Iv, I, II, V done
clear
D)
II, V, I, IV, III done
clear
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question_answer 16)
The alcohol product(s) of the reduction of 2-methyl-3-pentanone with \[LiAl{{H}_{4}}\] is (are)
A)
a single enantiomer done
clear
B)
racemic mixture done
clear
C)
two diastereoisomers done
clear
D)
two structural isomers done
clear
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question_answer 17)
Identity which of the strucutre below are meso structures?
A)
1 and 3 done
clear
B)
1, 3 and 5 done
clear
C)
1, 3 and 4 done
clear
D)
2 and 5 done
clear
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question_answer 18)
Select the most stable carbocation amongst the following
A)
B)
C)
D)
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question_answer 19)
Which of the following reactions is elimination reaction?
A)
B)
\[{{C}_{2}}{{H}_{5}}Cl+KOH\to {{C}_{2}}{{H}_{5}}OH+KCl\] done
clear
C)
D)
None of these done
clear
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question_answer 20)
In the following groups
\[\underset{(I)}{\mathop{-OAc}}\,\] \[\underset{(II)}{\mathop{-O}}\,Me\]
\[-\underset{(III)}{\mathop{OS{{O}_{2}}}}\,Me\] \[-\underset{(IV)}{\mathop{OS{{O}_{2}}}}\,C{{F}_{3}}\]
the order of leaving group ability is
A)
\[I>II>III>IV\] done
clear
B)
\[IV>III>I>II\] done
clear
C)
\[III>II>I>IV\] done
clear
D)
\[II>III>IV>I\] done
clear
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question_answer 21)
A mixture containing the following four compounds is extracted with 1M\[HCl\]. The compound that goes to aqueous layer is:
A)
(I) done
clear
B)
(II) done
clear
C)
(III) done
clear
D)
(IV) done
clear
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question_answer 22)
Most stable carbocation among the following is:
A)
B)
C)
D)
\[^{+}C{{H}_{3}}\] done
clear
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question_answer 23)
Which of the following cannot be represented by resonance structures?
A)
Dimethyl ether done
clear
B)
Nitrate anion done
clear
C)
Carboxylate anion done
clear
D)
Toluene done
clear
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question_answer 24)
The IUPAC name of the compound
is
A)
1, 2-Propoxide done
clear
B)
Propylene oxide done
clear
C)
1, 2-Oxo propane done
clear
D)
1, 2-Epoxy propane done
clear
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question_answer 25)
The correct relation between the bond lengths a and b is:
A)
a = b done
clear
B)
b > a done
clear
C)
b < a done
clear
D)
Impossible to predict done
clear
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question_answer 26)
Which of the following compounds are meso forms?
A)
1 only done
clear
B)
3 only done
clear
C)
1 and 2 done
clear
D)
2 and 3 done
clear
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question_answer 27)
Allyl is ocyanide has
A)
\[9\sigma \] and \[4\pi \]-bonds done
clear
B)
\[8\sigma \] and \[5\pi \] - bonds done
clear
C)
\[9\sigma ,\,3\pi \] and 2 non- bonded electrons done
clear
D)
\[8\sigma ,\,3\pi \] and 4 non - bonded electrons done
clear
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question_answer 28)
Which one of the following is a free-radical substitution reaction?
A)
\[C{{H}_{3}}CHO+HCN\xrightarrow{{}}C{{H}_{3}}CH\left( OH \right)CN\] done
clear
B)
C)
D)
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question_answer 29)
The most stable canonical structure among the given structure is:
A)
I done
clear
B)
II done
clear
C)
III done
clear
D)
all are equally stable done
clear
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question_answer 30)
Which of the following is the IUPAC name of the compound
A)
o - Bromo - m - chlorobenzaldehyde done
clear
B)
2 - Bromo - 5 - chlorobenzaldehyde done
clear
C)
6 - Bromo - 3 - chlorobenzaldehyde done
clear
D)
1 - Bromo - 4 - chlorobenzaldehyde done
clear
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question_answer 31)
The IUPAC name of the following compound is
A)
(E)-2-hepten-4-yne done
clear
B)
(Z)-5-hepten-3-yne done
clear
C)
(E)-5-hepten-3-yne done
clear
D)
(Z)-2-hepten-4-yne done
clear
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question_answer 32)
Dipole moment is shown by
A)
1,2-dichlorobenzene done
clear
B)
trans 2, 3-dichloro-2-butene done
clear
C)
1,4-chlorobenzene done
clear
D)
trans-1, 2-dinitroethene done
clear
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question_answer 33)
The optically inactive compound from the following is:
A)
2 - chloropropanal done
clear
B)
2 - chlorobutane done
clear
C)
2 - chloropentane done
clear
D)
2 - chloro - 2- methylbutane done
clear
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question_answer 34)
Tautomerism is exhibited by -
A)
(1), (3) and (4) done
clear
B)
(2), (3), and (4) done
clear
C)
(1), (2) and (4) done
clear
D)
None of these done
clear
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question_answer 35)
Which of the following represents the correct order of stability of the given carbocations?
A)
B)
C)
D)
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question_answer 36)
Which of the following behaves both as a nucleophile and as an electrophile?
A)
\[C{{H}_{3}}C\equiv N\] done
clear
B)
\[C{{H}_{3}}OH\] done
clear
C)
\[C{{H}_{2}}=CHC{{H}_{3}}\] done
clear
D)
\[C{{H}_{3}}N{{H}_{2}}\] done
clear
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question_answer 37)
What is the decreasing order of strength of the bases \[O{{H}^{-}},NH_{2}^{-},HC\equiv {{C}^{-}}~\] and \[C{{H}_{3}}CH_{2}^{-}\]?
A)
\[C{{H}_{3}}CH_{2}^{-}>NH_{2}^{-}>HC\equiv {{C}^{-}}>O{{H}^{-}}\] done
clear
B)
\[HC\equiv {{C}^{-}}>C{{H}_{3}}C{{H}_{2}}>NH_{2}^{-}>O{{H}^{-}}\] done
clear
C)
\[O{{H}^{-}}>NH_{2}^{-}>HC\equiv C{{~}^{-}}>C{{H}_{3}}CH_{2}^{-}\] done
clear
D)
\[NH_{2}^{-}>HC\equiv C{{~}^{-}}>O{{H}^{-}}>C{{H}_{3}}CH_{2}^{-}\] done
clear
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question_answer 38)
Pick up the correct statement regarding the following resonating structures of the anilinium ion
A)
Structure II is not acceptable because carbonium ions are less stable than ammonium ions done
clear
B)
II is not acceptable because it is non- aromatic done
clear
C)
II is not acceptable because here nitrogen has 10 valence electrons done
clear
D)
II is an acceptable canonical structure. done
clear
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question_answer 39)
Which of the following numberings is correct?
A)
A done
clear
B)
B done
clear
C)
C done
clear
D)
D done
clear
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question_answer 40)
The two compounds given below are
A)
identical done
clear
B)
enantiomers done
clear
C)
diastereo isomers done
clear
D)
regiomers done
clear
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question_answer 41)
The number of structural isomers for \[{{C}_{6}}{{H}_{14}}\] is:
A)
4 done
clear
B)
3 done
clear
C)
6 done
clear
D)
5 done
clear
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question_answer 42)
Which of the following pairs of compounds are positional isomers?
A)
\[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-\underset{O}{\mathop{\underset{\parallel }{\mathop{C}}\,}}\,-C{{H}_{3}}\] and \[C{{H}_{3}}-C{{H}_{2}}-\underset{O}{\mathop{\underset{\parallel }{\mathop{C}}\,}}\,-C{{H}_{2}}-C{{H}_{3}}\] done
clear
B)
\[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{2}}-CHO\] and \[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-\overset{O}{\mathop{\overset{\parallel }{\mathop{C}}\,}}\,-C{{H}_{3}}\] done
clear
C)
\[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-\underset{O}{\mathop{\underset{\parallel }{\mathop{C}}\,}}\,-C{{H}_{3}}\] and \[C{{H}_{3}}-\underset{C{{H}_{3}}}{\mathop{\underset{\parallel }{\mathop{CH}}\,}}\,-C{{H}_{2}}-CHO\] done
clear
D)
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question_answer 43)
The correct nucleophilicity order is
A)
\[CH_{3}^{-}<NH_{2}^{-}<H{{O}^{-}}<{{F}^{-}}\] done
clear
B)
\[CH_{3}^{-}\simeq NH_{2}^{-}>H{{O}^{-}}\simeq {{F}^{-}}\] done
clear
C)
\[CH_{3}^{-}>NH_{2}^{-}>H{{O}^{-}}>{{F}^{-}}\] done
clear
D)
\[NH_{2}^{-}>{{F}^{-}}~>H{{O}^{-}}>CH_{3}^{-}\] done
clear
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question_answer 44)
The correct order of heats of combustion of above compounds is:
A)
I > II > III done
clear
B)
II > I > III done
clear
C)
III > II > I done
clear
D)
III > I > II done
clear
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question_answer 45)
Which of the following optically active compounds racemizes in dil. \[KOH/C{{H}_{3}}OH\]
A)
B)
C)
D)
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question_answer 46)
The correct number of chiral centres in
A)
1 done
clear
B)
3 done
clear
C)
4 done
clear
D)
2 done
clear
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question_answer 47)
An optically active compound (A) is treated with NaI/acetone (B) is obtained
What is true about (B)?
A)
optically active done
clear
B)
optically inactive and racemic form done
clear
C)
optically inactive done
clear
D)
None of these done
clear
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question_answer 48)
Which of the following is correct set of physical properties of the geometrical isomers?
A)
B)
C)
D)
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question_answer 49)
Which of the following resonance structure is lowest in energy?
A)
A done
clear
B)
B done
clear
C)
C done
clear
D)
All have same energy done
clear
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question_answer 50)
A solution of(+) - 2 - chloro - 2 - phenylethane in toluene racemises slowly in the presence of small amounts of \[SbC{{l}_{5}}\] due to the formation of
A)
Carbanion done
clear
B)
Carbene done
clear
C)
Free radical done
clear
D)
Carbocation done
clear
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question_answer 51)
In the following compounds
the order of basicity is:
A)
IV > I > III > II done
clear
B)
III > I > IV > II done
clear
C)
II > I > III > IV done
clear
D)
I > III > II > IV done
clear
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question_answer 52)
Which one of the following compounds has non zero dipole moment?
A)
B)
C)
D)
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question_answer 53)
Dipole moment of which ketone is maximum?
A)
B)
C)
D)
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question_answer 54)
Which of the following orders is correct for heat of hydrogenation of these compounds?
A)
I > II > III done
clear
B)
III > II > I done
clear
C)
II > III > I done
clear
D)
III > I > II done
clear
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question_answer 55)
Which one of the following acids does not exhibit optical isomerism?
A)
Lactic acid done
clear
B)
Tartaricacid done
clear
C)
Maleicacid done
clear
D)
\[\alpha \]-amino acids done
clear
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question_answer 56)
How many cyclic structures are possible for \[{{C}_{4}}{{H}_{6}}\]?
A)
3 done
clear
B)
5 done
clear
C)
6 done
clear
D)
4 done
clear
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question_answer 57)
Maleic acid and fumaric acids are
A)
Chain isomers done
clear
B)
Functional isomers done
clear
C)
Tautomers done
clear
D)
Geometrical isomers done
clear
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question_answer 58)
One among the following compounds will not give effervescence with sodium carbonate:
A)
\[{{C}_{6}}{{H}_{5}}C{{O}_{2}}H\] done
clear
B)
C)
\[{{C}_{6}}{{H}_{5}}OH\] done
clear
D)
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question_answer 59)
Which of the following alkenes is the most stable?
A)
B)
C)
D)
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question_answer 60)
Which of the following statements is not correct?
A)
Carbocation posses sextet of electrons. done
clear
B)
The order of Carbocation stability is: \[\overset{+}{\mathop{C}}\,{{H}_{3}}>{{\left( C{{H}_{3}} \right)}_{2}}\overset{+}{\mathop{C}}\,H>{{\left( C{{H}_{3}} \right)}_{3}}\overset{+}{\mathop{C}}\,\] done
clear
C)
Carbocations have trigonal planar shape done
clear
D)
Carbocations are formed by heterolytic cleavage done
clear
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question_answer 61)
The enol form of acetone after treatment with \[{{D}_{2}}O\] gives:
A)
\[C{{H}_{3}}-\overset{OD}{\mathop{\overset{|}{\mathop{C}}\,}}\,=C{{H}_{2}}\] done
clear
B)
\[C{{H}_{3}}-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,=C{{D}_{3}}\] done
clear
C)
\[C{{H}_{2}}=\overset{OH}{\mathop{\overset{|}{\mathop{C}}\,}}\,-C{{H}_{2}}D\] done
clear
D)
\[C{{D}_{2}}=\overset{OD}{\mathop{\overset{|}{\mathop{C}}\,}}\,-C{{D}_{3}}\] done
clear
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question_answer 62)
Indicate whether each of the following pairs are identical or not?
A)
I-enantiomers; II-diastereomers; III-enantiomers done
clear
B)
I-identical; II-enantiomers; III-enantiomers done
clear
C)
I-enantiomers; II-diastereomers; III-identical done
clear
D)
I-enantiomers; II-identical; III-identical done
clear
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question_answer 63)
Which of the following compound has plane of symmetry? \[R=-\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{CH}}\,}}\,-Cl\] , \[S=-\underset{Br}{\mathop{\underset{|}{\mathop{CH}}\,}}\,-Cl\]
A)
B)
C)
D)
None of these done
clear
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question_answer 64)
Which of the following is not a resonance form of the enolate ion formed in the following acid base equilibrium
A)
B)
C)
D)
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question_answer 65)
The order of stability of the following carbocations:
(I) \[C{{H}_{2}}=CH-\overset{+}{\mathop{C}}\,{{H}_{2}}\]
(II) \[C{{H}_{3}}-C{{H}_{2}}-\overset{+}{\mathop{C}}\,{{H}_{2}}\]
(III)
(IV) \[\overset{+}{\mathop{C}}\,{{H}_{3}}\] is:
A)
IV > III > II > I done
clear
B)
II > III > I > IV done
clear
C)
III > I> II > IV done
clear
D)
III > I > IV > II done
clear
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question_answer 66)
1.4 kg of an organic compound was digested according to Kjeldah method and the ammonia evolved was absorbed in 60 mL of M/ 10 \[{{H}_{2}}S{{O}_{4}}\]solution. The excess sulphuric acid required 20 mL of M/10 \[NaOH\] solution for neutralization. The percentage of nitrogen in the compound is:
A)
10 done
clear
B)
3 done
clear
C)
24 done
clear
D)
5 done
clear
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question_answer 67)
Which of the following would react most readily with nucleophiles?
A)
B)
C)
D)
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question_answer 68)
The shape of transition state is -
A)
Triangular planar done
clear
B)
Square pyramidal done
clear
C)
Trigonal bipyramidal done
clear
D)
Tetrahedral done
clear
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question_answer 69)
Which one of the following is most stable?
A)
B)
C)
D)
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question_answer 70)
In nucleophilic substitution reaction, order of halogens as incoming (attacking) nucleophile is:
\[{{I}^{-}}>B{{r}^{-}}>C{{l}^{-}}\] The order of halogens as departing nucleophile should be:
A)
\[B{{r}^{-}}>{{I}^{-}}>C{{l}^{-}}\] done
clear
B)
\[{{I}^{-}}>B{{r}^{-}}>C{{l}^{-}}\] done
clear
C)
\[C{{l}^{-}}>B{{r}^{-}}>{{I}^{-}}\] done
clear
D)
\[C{{l}^{-}}>{{I}^{-}}>B{{r}^{-}}\] done
clear
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