Advertisements
Advertisements
प्रश्न
Resorcinol on distillation with zinc dust gives _________.
विकल्प
Cyclohexane
Benzene
Toluene
Benzene-1, 3-diol
Advertisements
उत्तर
Resorcinol on distillation with zinc dust gives benzene.
Explanation:
Distillation of phenol with zinc dust gives benzene.
\[\ce{\underset{Phenol}{C6H5 - OH} + Zn ->[distillation] \underset{Benzene}{C6H6} + ZnO}\]
APPEARS IN
संबंधित प्रश्न
What is metamerism?
Explain metamerism with suitable examples of ethers
Name the following compound according to IUPAC system.
\[\begin{array}{cc}
\phantom{............}\ce{CH2OH}\\
\phantom{......}|\\
\ce{CH3 - CH2 - CH - CH - CH - CH3}\\
\phantom{......}|\phantom{............}|\phantom{.}\\
\phantom{........}\ce{CH2Cl}\phantom{......}\ce{CH3}\phantom{}
\end{array}\]
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.
\[\begin{array}{cc}
\ce{CH3 - C = C - CH2OH}\\
\phantom{}|\phantom{....}|\phantom{....}\\
\phantom{}\ce{CH3}\phantom{.}\ce{Br}\phantom{...}
\end{array}\]
Write IUPAC name of the following compound:
\[\begin{array}{cc}
\phantom{................}\ce{CH3}\\
\phantom{.............}|\\
\ce{CH3 - CH - CH - C - CH3}\\
|\phantom{......}|\phantom{......}|\\
\phantom{...}\ce{CH3\phantom{.}}\phantom{..}\ce{OH}\phantom{...}\ce{CH3}
\end{array}\]
Write IUPAC name of the following compound:
\[\begin{array}{cc}
\ce{CH3 - CH - CH - CH3}\\
|\phantom{......}|\phantom{..}\\
\ce{OH}\phantom{...}\ce{OH}\phantom{}
\end{array}\]
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:
\[\begin{array}{cc}
\ce{CH3 - O - CH2 - CH - CH3}\\
\phantom{..........}|\\
\phantom{............}\ce{CH3}
\end{array}\]
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:
\[\begin{array}{cc}
\ce{CH3 - CH2 - O - CH - CH2 - CH3}\\
\phantom{...}|\\
\phantom{.....}\ce{CH3}
\end{array}\]
- Draw the structures of all isomeric alcohols of molecular formula C5H12O and give their IUPAC names.
- 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:
O2N – C6H4 – OCH3(p)
Give IUPAC name of the following ether:
CH3CH2CH2OCH3
Give IUPAC name of the following ether:
Ethylidene dichloride when boiled with aqueous solution of NaOH yields _______.
(A) formaldehyde
(B) acetaldehyde
(C) acetone
(D) ethyl methyl ketone
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)3 C- NH2
Write the structure and IUPAC name of 'methyl-n-propyl ether'.
3-Methylbutane-2-ol on heating with HI gives ______
How is phenol converted into the following?
Benzene
How is phenol converted into the following?
picric acid
Write IUPAC name of the following compound (CH3)2 N − CH2CH3
Write the IUPAC name of the following compound:
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
How do you convert the Ethanal to Propanone
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
Propanoic acid to ethylamine.
Write structural formulae for 1-Ethylcyclohexanol.
Write IUPAC name of the following
Write IUPAC names of the following
In a carbinol system of nomenclature tert.butyl alcohol is named as _______________
Glycerol is ____________.
Isopropyl alcohol on oxidation forms:
Give IUPAC names of the following compound:
\[\begin{array}{cc}
\phantom{..}\ce{H}\phantom{...}\ce{CH3}\phantom{.}\ce{H}\phantom{..}\\
\phantom{}|\phantom{....}|\phantom{....}|\phantom{}\\
\ce{H - C - C - C - H}\\
\phantom{}|\phantom{....}|\phantom{....}|\phantom{}\\
\phantom{.}\ce{H}\phantom{...}\ce{OH}\phantom{.}\ce{H}\phantom{.}\\
\end{array}\]
3-methylphenol is called ____________.
The compound HOCH2 – CH2OH is __________.
Butane-2-ol is ____________.
Cresol has ____________.
HBr reacts fastest with ____________.
n-Propyl alcohol and isopropyl alcohol can be chemically distinguished by which reagent?
Ethylene reacts with Baeyer’s reagent to give ______.
When ethyl alcohol reacts with acetic acid, the products formed are:
1-Propanol and 2-propanol can be best distinguished by:
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:
The heating of phenyl methyl ether with HI produces:
Which of the following gives a positive iodoform test?
\[\ce{Phenol ->[Zn, dust] 'X' ->[CH3Cl][Anhy. AlCl3] 'Y' ->[Alkaline][KMnO4] 'Z'}\]
The product ‘Z’ is:
IUPAC name of the compound is:
\[\begin{array}{cc}
\ce{CH3-CH-OCH3}\\
|\phantom{....}\\
\ce{CH3}\phantom{..}
\end{array}\]
IUPAC name of m-cresol is ______.
IUPAC name of the compound \[\begin{array}{cc}
\ce{CH3 - CH - OCH3}\\
\phantom{}|\phantom{....}\\
\phantom{}\ce{CH3}\phantom{..}
\end{array}\] is ______.
Give IUPAC name of the compound given below.
\[\begin{array}{cc}
\phantom{}\ce{CH3 - CH - CH2 - CH2 - CH - CH3}\phantom{.}\\
\phantom{.........}|\phantom{...................}|\phantom{...........}\\
\phantom{..}\ce{Cl}\phantom{.................}\ce{OH}\phantom{..}
\end{array}\]
Which of the following compounds will react with sodium hydroxide solution in water?
Write the IUPAC name of the compound given below.
\[\begin{array}{cc}
\phantom{}\ce{CH3 - CH2 - C = C - OH}\\
\phantom{........}|\phantom{....}|\phantom{}\\
\phantom{..............}\ce{CH3 CH2OH}
\end{array}\]
Arrange the following compounds in decreasing order of acidity.
\[\ce{H2O, ROH, HC ≡ CH}\]
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 |
Assertion: Addition reaction of water to but-1-ene in acidic medium yields butan-1-ol.
Reason: Addition of water in acidic medium proceeds through the formation of primary carbocation.
Assertion: IUPAC name of the compound
\[\begin{array}{cc}
\ce{CH3 - CH - O - CH2 - CH2 - CH3}\\
|\phantom{....................}\\
\ce{CH3}\phantom{.................}
\end{array}\] is 2-Ethoxy-2-methylethane.
Reason: In IUPAC nomenclature, ether is regarded as hydrocarbon derivative in which a hydrogen atom is replaced by —OR or —OAr group [where R = alkyl group and Ar = aryl group]
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.
Write complete reaction for the bromination of phenol in aqueous and non-aqueous medium.
Explain why Lewis acid is not required in bromination of phenol?
Write the IUPAC name of the following compound.
Convert the following:
Ethyl alcohol into ethyl acetate.
Write a chemical reaction for the following conversion:
Acetic acid into ethyl alcohol.
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.
Prop-2-en-1-ol
Give the structures of Thiosulphuric acid and Peroxy monosulphuric acid.
Write structural formulae for:
p-Nitrophenol
Write structural formulae for:
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 the IUPAC name.
\[\begin{array}{cc}
\phantom{................}\ce{CH3}\\
\phantom{.............}|\\
\ce{CH3 - CH - CH - C -CH3}\\
\phantom{.}|\phantom{......}|\phantom{......}|\\
\phantom{....}\ce{CH3\phantom{...}\ce{OH}\phantom{...}\ce{CH3}}\
\end{array}\]
Write IUPAC names of the following compounds:
\[\begin{array}{cc}
\phantom{...............}\ce{CH3}\\
\phantom{.............}|\\
\ce{CH3 - CH - CH - C - CH3}\\
|\phantom{......}|\phantom{......}|\\
\phantom{...}\ce{CH3\phantom{...}OH\phantom{...}CH3}\\
\end{array}\]
Write IUPAC name of the following compound:
\[\begin{array}{cc}
\phantom{................}\ce{CH3}\\
\phantom{.............}|\\
\ce{CH3 - CH - CH - C - CH3}\\
|\phantom{......}|\phantom{......}|\\
\phantom{...}\ce{CH3}\phantom{...}\ce{OH}\phantom{...}\ce{CH3}
\end{array}\]
