मराठी
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

Write the IUPAC name of the following compound:


Give the IUPAC name of the following ether:

CH3OCH2CH2Cl


Give the IUPAC name of the following ether:

O2N – C6H4 – OCH3(p)


Natalite is a mixture of

(a) diethyl ether and methanol

(b) diethyl ether and ethanol

(c) dimethyl ether and methanol

(d) dimethyl ether and ethanol


3-Methylbutane-2-ol on heating with HI gives ______


How is phenol converted into the following?

Benzene


How is phenol converted into the following?

benzoquinone


Write IUPAC name of the following compound (CH3)2 N − CH2CH3


Write the structures of the products when Butan-2-ol reacts with CrO3


In the dehydration of alcohols to alkenes by heating with concentrated sulphuric acid, the initiation step is:

(1) formation of carbonation

(2) formation of an ester

(3) protonation of the alcohol molecule

(4) elimination of water


Write a structural formula for methyl vinyl ether.


Write IUPAC name of the following


An example of a compound with functional group – O – is ____________.


The major product formed by the reaction:

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


The heating of phenyl methyl ether with HI produces:


Give IUPAC name of the compound given below.

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


Arrange the following compounds in decreasing order of acidity.

\[\ce{H2O, ROH, HC ≡ CH}\]


Write IUPAC name of the following compound:

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


The IUPAC name of is ______.


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