मराठी

Assertion (A): The compound cyclooctane has the following structural formula: It is cyclic and has conjugated 8π-electron system but it is not an aromatic compound. Reason (R): (4n + 2) π electrons - Chemistry

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प्रश्न

Assertion (A): The compound cyclooctane has the following structural formula:

It is cyclic and has conjugated 8π-electron system but it is not an aromatic compound.

Reason (R): (4n + 2)π electrons rule does not hold good and ring is not planar.

पर्याय

  • Both A and R are correct and R is the correct explanation of A.

  • Both A and R are correct but R is not the correct explanation of A.

  • Both A and R are not correct.

  • A is not correct but R is correct.

MCQ

उत्तर

Both A and R are correct and R is the correct explanation of A.

Explanation:

Because cyclooctatetraene is tubbed shaped

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Isomerism
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पाठ 13: Hydrocarbons - Multiple Choice Questions (Type - I) [पृष्ठ १६९]

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एनसीईआरटी एक्झांप्लर Chemistry [English] Class 11
पाठ 13 Hydrocarbons
Multiple Choice Questions (Type - I) | Q 44 | पृष्ठ १६९

संबंधित प्रश्‍न

Write IUPAC name of the product obtained by the ozonolysis of the following compound:

3,4-Dimethyl-hept-3-ene


What is the relationship between the members of following pairs of structures? Are they structural or geometrical isomers or resonance contributors?

\[\begin{array}{cc}
\ce{D}\phantom{......}\ce{H}\\
\backslash\phantom{......}/\\
\ce{C = C}\\
\phantom{...}/\phantom{......}\backslash\phantom{...}\\\ce{H}\phantom{.......}\ce{D}
\end{array}\]

\[\begin{array}{cc}
\ce{D}\phantom{......}\ce{D}\\
\backslash\phantom{......}/\\
\ce{C = C}\\
\phantom{...}/\phantom{......}\backslash\phantom{...}\\\ce{H}\phantom{.......}\ce{H}\end{array}\]


Find out the type of isomerism exhibited by the following pair.


Choose the correct option.

Which type of isomerism is possible in CH3 CHCHCH3?


Molecular formula of the functional isomer of methyl formate is ____________.


Which of the following is a functional isomer of pentan-2-ol?


Which of the following pairs are not functional group isomers?

I. \[\begin{array}{cc}
\phantom{.......................}\ce{O}\\
\phantom{.......................}||\\
\ce{CH3 - CH2 - CH2 - CH2 - C - H}
\end{array}\]
II. \[\begin{array}{cc}
\phantom{.................}\ce{O}\\
\phantom{.................}||\\
\ce{CH3 - CH2 - CH2 - C - H}
\end{array}\]
III. \[\begin{array}{cc}
\ce{CH3 - CH2 - C - CH2 - CH3}\\
\phantom{}||\\
\phantom{}\ce{O}
\end{array}\]
IV. \[\begin{array}{cc}
\ce{CH3 - CH - CH2 - C - H}\\
\phantom{...}|\phantom{............}||\phantom{}\\
\phantom{...}\ce{CH3}\phantom{.........}\ce{O}\phantom{}
\end{array}\]

(i) II and III

(ii) II and IV

(iii) I and IV

(iv) I and II


Consider structures I to VII and answer the question:

I. CH3 – CH2 – CH2 – CH2 – OH
II. \[\begin{array}{cc}
\ce{CH3 - CH2 - CH - CH3}\\
\phantom{.....}|\\
\phantom{.......}\ce{OH}
\end{array}\]
III. \[\begin{array}{cc}
\phantom{...}\ce{CH3}\\
\phantom{}|\\
\ce{CH3 - C - CH3}\\
\phantom{}|\\
\phantom{..}\ce{OH}
\end{array}\]
IV. \[\begin{array}{cc}
\ce{CH3 - CH - CH2 - OH}\\
|\phantom{........}\\
\ce{CH3}\phantom{......}
\end{array}\]
V. CH3 – CH2 – O – CH2 – CH3
VI. CH3 – O – CH2 – CH2 – CH3
VII. \[\begin{array}{cc}
\ce{CH3 - O - CH - CH3}\\
\phantom{...}|\\
\phantom{......}\ce{CH3}
\end{array}\]

Identify the pairs of compounds that represents chain isomerism.


The molecules having dipole moment are:

(i) 2,2-Dimethylpropane

(ii) trans-Pent-2-ene

(iii) cis-Hex-3-ene

(iv) 2, 2, 3, 3 - Tetramethylbutane.


Ether and alcohol are ______.


The compound which shows metamerism is ______


Acetamide is isomer of ______.


Which one of the following pairs are called position isomers?


The correct stereochemical name of


The number of acyclic structural isomers (including geometrical isomers) for pentene are ______.


Which of the following pairs of compounds are positional isomers?


Which of the following reactions will not produce a racemic product?


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