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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Assertion: Phenol forms 2, 4, 6 – tribromophenol on treatment with BrX2 in carbon disulphide at 273 K. Reason: Bromine polarises in carbon disulphide.

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प्रश्न

Assertion: Phenol forms 2, 4, 6 – tribromophenol on treatment with \[\ce{Br2}\] in carbon disulphide at 273 K.

Reason: Bromine polarises in carbon disulphide.

पर्याय

  • Assertion and reason both are correct and reason is correct explanation of assertion.

  • Assertion and reason both are wrong statements.

  • Assertion is correct statement but reason is wrong statement.

  • Assertion is wrong statement but reason is correct statement.

  • Both assertion and reason are correct statements but reason is not correct explanation of assertion.

MCQ
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उत्तर

Assertion and reason both are wrong statements.

Explanation:

Phenol forms 2, 4, 6-tribromophenol on treatment with bromine in water. In phenols, the polarization of bromine takes place even in the absence of Lewis acid.

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पाठ 11: Alcohols, Phenols and Ethers - Multiple Choice Questions (Type - I) [पृष्ठ १६४]

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एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 12
पाठ 11 Alcohols, Phenols and Ethers
Multiple Choice Questions (Type - I) | Q 69 | पृष्ठ १६४

संबंधित प्रश्‍न

Name the following compound according to the IUPAC system.

\[\begin{array}{cc}
\phantom{.....................................}\ce{CH2OH}\\
\phantom{............................}|\\
\ce{CH3 - CH - CH2 - CH - CH - CH3}\\
|\phantom{....................}|\phantom{............}\\
\ce{CH3}\phantom{..............}\ce{OH}\phantom{.........}\\
\end{array}\]


Name the following compound according to the IUPAC system.

\[\begin{array}{cc}
\ce{CH3 - C = C - CH2OH}\\
|\phantom{......}|\phantom{.....}\\
\ce{CH3}\phantom{.}\ce{Br}\phantom{....}\\
\end{array}\]


Write the IUPAC name of the following compound:

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


Write the structure and IUPAC name of 'methyl-n-propyl ether'.


How is phenol converted into the following?

Benzene


How is phenol converted into the following?

benzoquinone


Give reasons Fluoride ion has higher hydration enthalpy than chloride ion.


How do you convert the Ethanal to Propanone


Propanoic acid to ethylamine.


Which of the following compounds is oxidised to prepare methyl ethyl ketone?


The IUPAC name of the ether CH2 = CH–CH2OCH3 is:


The major product formed by the reaction:

\[\begin{array}{cc}
\ce{CH3CH-CH2Br ->[CH3O^-][CH3OH] is}\\
|\phantom{................}\\
\ce{CH3}\phantom{.............}
\end{array}\]


The product of acid catalysed hydration of 2-phenylpropene is:


Among the following sets of reactants which one produces anisole?


What happens when benzene diazonium chloride is heated with water?


Write steps to carry out the conversion of phenol to aspirin.


Match the structures of the compounds given in Column I with the name of the compounds given in Column II.

  Column I Column II
(i) (a) Hydroquinone
(ii) (b) Phenetole
(iii) (c) Catechol
(iv) (d) o-Cresol
(v) (e) guinone
(vi) (f) Resorcinol
    (g) Anisole

Draw structure of the following compound.

2. 5-Diethylphenol


Give the structures of Thiosulphuric acid and Peroxy monosulphuric acid.


Write IUPAC name of the following compound:

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


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