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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान कक्षा ११

Consider structures I to VII and answer the question: I. CH3 – CH2 – CH2 – CH2 – OH II. CHX3−CHX2−CH−CHX3.....|.......OH III. ...CHX3|CHX3−C−CHX3|..OH IV. CHX3−CH−CHX2−OH|........CHX3......

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प्रश्न

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 position isomerism.

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उत्तर

If two or more compounds differ in the position of substituent, functional group, or multiple bonds but molecular formula is same then these are said to be position isomers as they exhibit position isomerism. 

In the given structures, I and II, III and IV, VI and VII are found to be the position isomers.

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अध्याय 12: Organic Chemistry Some Basic Principles and Techniques - Multiple Choice Questions (Type - I) [पृष्ठ १५०]

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एनसीईआरटी एक्झांप्लर Chemistry [English] Class 11
अध्याय 12 Organic Chemistry Some Basic Principles and Techniques
Multiple Choice Questions (Type - I) | Q 25 | पृष्ठ १५०

संबंधित प्रश्न

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

3,4-Dimethyl-hept-3-ene


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

2-Ethylbut-1-ene 


Draw the cis and trans structures of hex-2-ene. Which isomer will have higher b.p. and why?


What effect does branching of an alkane chain has on its boiling point?


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

\[\begin{array}{cc}
\ce{CH3 - CH - CH2 - CH3 and CH3 - CH2 - O - CH2 - CH3}\\|\phantom{...........................................}\\
\ce{OH}\phantom{.........................................}\end{array}\]


Choose the correct option.

Which type of isomerism is possible in CH3 CHCHCH3?


What type(s) of isomerism is(are) shown by [Co(NH3)4Br2]Cl?


But-1-ene and But-2-ene are examples of ____________.


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


The type of isomerism possible in 2-butene is ____________.


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


In which of the following, functional group isomerism is not possible?


Which of the following pairs are position 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) I and II

(ii) II and III

(iii) II and IV

(iv) III and IV


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 which are functional group isomers.


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.


Which of the following does NOT exhibit geometrical isomerism? 


Ether and alcohol are ______.


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 ______.


Compound with molecular formula C3H6O can show ______.


Which of the following pairs of compounds are positional isomers?


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


Which of the following pairs of compounds is an example of position isomerism?


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