41.
The type of isomerism shown by the following compounds is
$$C{H_3}C{H_2}C{H_2}C{H_2}C{H_3},$$ \[C{{H}_{3}}-\overset{\begin{smallmatrix}
\,\,C{{H}_{3}} \\
|\,\,\,\,
\end{smallmatrix}}{\mathop{CH}}\,-C{{H}_{2}}C{{H}_{3}},\] \[C{{H}_{3}}\underset{\begin{smallmatrix}
| \\
\,\,\,\,C{{H}_{3}}
\end{smallmatrix}}{\overset{\begin{smallmatrix}
\,\,\,\,\,C{{H}_{3}} \\
|
\end{smallmatrix}}{\mathop{-C-}}}\,C{{H}_{3}}\]
A
position isomerism
B
metamerism
C
ring-chain isomerism
D
chain isomerism
Answer :
chain isomerism
42. How many cyclic structures are possible for $${C_4}{H_6}?$$
A
3
B
5
C
6
D
4
Answer :
5
43. One among the following compounds will not give effervescence with sodium carbonate :
A
B
C
D
Answer :
44. Isomers which can be interconverted through rotation around a single bond are
A
Conformers
B
Diastereomers
C
Enantiomers
D
Positional isomers
Answer :
Conformers
45. The correct decreasing order of priority for the functional groups of organic compounds in the IUPAC system of nomenclature is
A
$$ - COOH, - S{O_3}H, - CON{H_2}, - CHO$$
B
$$ - S{O_3}H, - COOH, - CON{H_2}, - CHO$$
C
$$ - CHO, - COOH, - S{O_3}H, - CON{H_2}$$
D
$$ - CON{H_2}, - CHO, - S{O_3}H, - COOH$$
Answer :
$$ - COOH, - S{O_3}H, - CON{H_2}, - CHO$$
46. The electrophile, $${E^ \oplus }$$ attacks the benzene ring to generate the intermediate $$\sigma - $$ complex. Of the following, which $$\sigma - $$ complex is lowest energy ?
A
B
C
D
Answer :
48. The alkene that exhibits geometrical isomerism is :
A
2 - methyl propene
B
2 - butene
C
2 - methyl - 2 - butene
D
propene
Answer :
2 - butene
49. Which one of the following has the minimum boiling point ?
A
1 - Butene
B
1 - Butyne
C
n - Butane
D
isobutane
Answer :
isobutane
50. Which of the following pairs of compounds are positional isomers ?
A
B
C
D
Answer :