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Resorcinol on distillation with zinc dust gives _________. - Chemistry

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प्रश्न

Resorcinol on distillation with zinc dust gives _________.

पर्याय

  • Cyclohexane

  • Benzene

  • Toluene

  • Benzene-1, 3-diol

MCQ
रिकाम्या जागा भरा

उत्तर

Resorcinol on distillation with zinc dust gives benzene.

Explanation:

Distillation of phenol with zinc dust gives benzene.

\[\ce{\underset{Phenol}{C6H5 - OH} + Zn ->[distillation] \underset{Benzene}{C6H6} + ZnO}\]

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पाठ 11: Alcohols, Phenols and Ethers - Exercises [पृष्ठ २५२]

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बालभारती Chemistry [English] 12 Standard HSC
पाठ 11 Alcohols, Phenols and Ethers
Exercises | Q 1.05 | पृष्ठ २५२

व्हिडिओ ट्यूटोरियलVIEW ALL [3]

संबंधित प्रश्‍न

Explain metamerism with suitable examples of ethers


Write the IUPAC name of the given compound:


Name the following compound according to IUPAC system.

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


Name the following compound according to IUPAC system.


Name the following compound according to IUPAC system.

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


Write IUPAC name of the following compound:

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


Write IUPAC name of the following compound:


Write IUPAC name of the following compound:


Write IUPAC name of the following compound:


Write IUPAC name of the following compound:

C6H5 – O – C2H5


Write IUPAC name of the following compound:

C6H5 – O – C7H15(n−)


Write IUPAC name of the following compound:

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


  1. Draw the structures of all isomeric alcohols of molecular formula C5H12O and give their IUPAC names.
  2. Classify the isomers of alcohols in the above question as primary, secondary and tertiary alcohols.

Give IUPAC name of the following ether:

\[\begin{array}{cc}
\ce{C2H5OCH2 - CH - CH3}\\
\phantom{.....}|\\
\phantom{.......}\ce{CH3}
\end{array}\]


Give IUPAC name of the following ether:

CH3OCH2CH2Cl


Give IUPAC name of the following ether:

CH3CH2CH2OCH3


Ethylidene dichloride when boiled with aqueous solution of NaOH yields _______.

(A) formaldehyde

(B) acetaldehyde

(C) acetone

(D) ethyl methyl ketone


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


Which of the following compounds is NOT prepared by the action of alcoholic NI3 on alkyl halide?

(a) CH3NH2

(b) CH3- CH2- NH2

(c) CH3 - CH2 - CH2 - NH2

(d) (CH3)C- NH2


How is phenol converted into the following?

benzene


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


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


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


Write the structures of the products when Butan-2-ol reacts with SOCl2


Write the IUPAC name of the following :


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


What.will be the product fonned when chlorobenzene is heated with sodium metal in the presence of dry ether?


Write structural formulae for Methyl vinyl ether.


Write structural formulae for 1-Ethylcyclohexanol.


Write structural formulae for Pentane-1,4-diol


Write structural formulae for Cyclohex-2-en-1-ol.


Write IUPAC name of the following

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


Write IUPAC names of the following


In a carbinol system of nomenclature tert.butyl alcohol is named as _______________


Isopropyl alcohol on oxidation forms:


Give IUPAC names of the following compound:


3-methylphenol is called ____________.


One of the following is not a dihydroxy derivative of benzene.


The compound HOCH2 – CH2OH is __________.


Butane-2-ol is ____________.


Cresol has ____________.


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


Ethylene reacts with Baeyer’s reagent to give ______.


When ethyl alcohol reacts with acetic acid, the products formed are:


Which of the following is most acidic?


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


The major product formed by the reaction:

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


\[\ce{HC ≡ CH ->[HgSO4][H2SO4] ->[CH3MgBr][H2O] ->[PBr3]}\]


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


Which of the following gives a positive iodoform test?


Among the following sets of reactants which one produces anisole?


IUPAC name of m-cresol is ______.


Give IUPAC name of the compound given below.

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


Write the IUPAC name of the compound given below.

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


What happens when benzene diazonium chloride is heated with water?


Arrange the following compounds in decreasing order of acidity.

\[\ce{H2O, ROH, HC ≡ CH}\]


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


Explain why p-nitrophenol is more acidic than phenol.


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

Match the starting materials given in Column I with the products formed by these (Column II) in the reaction with HI.

  Column I   Column II
(i) CH3—O—CH3 (a)
(ii) \[\begin{array}{cc}
\ce{CH3}\phantom{..................}\\
\backslash\phantom{.............}\\
\ce{CH-O-CH3}\\
/\phantom{..............}\\
\ce{CH3}\phantom{..................}
\end{array}\]
(b) \[\begin{array}{cc}
\ce{CH3}\phantom{....}\\
|\phantom{.......}\\
\ce{CH3-C-I + CH3OH}\\
|\phantom{.......}\\
\ce{CH3}\phantom{....}
\end{array}\]
(iii) \[\begin{array}{cc}
\ce{CH3}\phantom{.}\\
|\phantom{....}\\
\ce{H3C-C-O-CH3}\\
|\phantom{....}\\
\ce{CH3}\phantom{..}
\end{array}\]
(c)
(iv) (d) CH3—OH + CH3—I
    (e) \[\begin{array}{cc}
\ce{CH3}\phantom{.....................}\\
\backslash\phantom{.................}\\
\ce{CH-OH + CH3I}\\
/\phantom{.................}\\
\ce{CH3}\phantom{.....................}
\end{array}\]
    (f) \[\begin{array}{cc}
\ce{CH3}\phantom{.....................}\\
\backslash\phantom{.................}\\
\ce{CH-I + CH3OH}\\
/\phantom{.................}\\
\ce{CH3}\phantom{.....................}
\end{array}\]
    (g) \[\begin{array}{cc}
\ce{CH3}\phantom{....}\\
|\phantom{.......}\\
\ce{CH3-C-OH + CH3I}\\
|\phantom{.......}\\
\ce{CH3}\phantom{....}
\end{array}\]

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Reason: Addition of water in acidic medium proceeds through the formation of primary carbocation.


Assertion: p-nitrophenol is more acidic than phenol.

Reason: Nitro group helps in the stabilisation of the phenoxide ion by dispersal of negative charge due to resonance.


Assertion: Like bromination of benzene, bromination of phenol is also carried out in the presence of Lewis acid.

Reason: Lewis acid polarises the bromine molecule.


Assertion: Phenols give o- and p-nitrophenol on nitration with conc. \[\ce{HNO3}\] and \[\ce{H2SO4}\] mixture.

Reason: –OH group in phenol is o–, p– directing.


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Explain why Lewis acid is not required in bromination of phenol?


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Write the IUPAC name of the following compound.


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Methyl magnesium bromide→2-Methylpropan-2-ol.


Write IUPAC name of the following compound:

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


Draw structure of the following compound.

2. 5-Diethylphenol


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Draw structure of the following compound.

Prop-2-en-1-ol


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Salicylic acid


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 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 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 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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