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प्रश्न
Ethylidene dichloride when boiled with aqueous solution of NaOH yields _______.
(A) formaldehyde
(B) acetaldehyde
(C) acetone
(D) ethyl methyl ketone
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उत्तर
(B) acetaldehyde
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संबंधित प्रश्न
What is metamerism?
Explain metamerism with suitable examples of ethers
Write the IUPAC name of the given compound:
Name the following compound according to IUPAC system.
\[\begin{array}{cc}
\phantom{............}\ce{CH2OH}\\
\phantom{......}|\\
\ce{CH3 - CH2 - CH - CH - CH - CH3}\\
\phantom{......}|\phantom{............}|\phantom{.}\\
\phantom{........}\ce{CH2Cl}\phantom{......}\ce{CH3}\phantom{}
\end{array}\]
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.
Name the following compound according to IUPAC system.
\[\begin{array}{cc}
\ce{H2C = CH - CH - CH2 - CH2 - CH3}\\
|\phantom{..........}\\
\ce{OH}\phantom{........}
\end{array}\]
Write IUPAC name of the following compound:
\[\begin{array}{cc}
\ce{H3C - CH - CH2 - CH - CH - CH2 - CH3}\\
\phantom{}|\phantom{.............}|\phantom{......}|\phantom{.........}\\
\phantom{}\ce{OH}\phantom{..........}\ce{OH}\phantom{...}\ce{C2H5}\phantom{......}
\end{array}\]
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 structures of the compounds whose IUPAC names are as follows:
3-Chloromethylpentan-1-ol.
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:
Give IUPAC name of the following ether:
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
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 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
Propanoic acid to ethylamine.
Write structural formulae for 3-Methoxyhexane
Write structural formulae for 1-Ethylcyclohexanol.
Write structural formula for pentane-1,4-diol.
Write structural formulae for Cyclohex-2-en-1-ol.
Write IUPAC name of the following
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 _______________
Glycerol is ____________.
Isopropyl alcohol on oxidation forms:
Give IUPAC names of the following compound:
\[\begin{array}{cc}
\phantom{..}\ce{H}\phantom{...}\ce{CH3}\phantom{.}\ce{H}\phantom{..}\\
\phantom{}|\phantom{....}|\phantom{....}|\phantom{}\\
\ce{H - C - C - C - H}\\
\phantom{}|\phantom{....}|\phantom{....}|\phantom{}\\
\phantom{.}\ce{H}\phantom{...}\ce{OH}\phantom{.}\ce{H}\phantom{.}\\
\end{array}\]
One of the following is not a dihydroxy derivative of benzene.
The compound HOCH2 – CH2OH is __________.
An example of a compound with functional group – O – is ____________.
Butane-2-ol is ____________.
Cresol has ____________.
Ethyl alcohol is industrially prepared from ethylene by:
Which of the following compounds is oxidised to prepare methyl ethyl ketone?
n-Propyl alcohol and isopropyl alcohol can be chemically distinguished by which reagent?
IUPAC name of m-cresol is ____________.
Which of the following is most acidic?
The IUPAC name of the ether CH2 = CH–CH2OCH3 is:
Which of the following gives a positive iodoform test?
Among the following sets of reactants which one produces anisole?
IUPAC name of the compound is:
\[\begin{array}{cc}
\ce{CH3-CH-OCH3}\\
|\phantom{....}\\
\ce{CH3}\phantom{..}
\end{array}\]
The correct acidic strength order of the following is:
(I)
(II)
(III)
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?
Which of the following reagents can be used to oxidise primary alcohols to aldehydes?
(i) \[\ce{CrO3}\] in anhydrous medium.
(ii) \[\ce{KMnO4}\] in acidic medium.
(iii) Pyridinium chlorochromate.
(iv) Heat in the presence of Cu at 573 K.
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.
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) | \[\begin{array}{cc} \ce{CH3}\phantom{....}\\ |\phantom{.......}\\ \ce{CH3-C-OH + CH3I}\\ |\phantom{.......}\\ \ce{CH3}\phantom{....} \end{array}\] |
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: 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: 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: 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: Phenol forms 2, 4, 6 – tribromophenol on treatment with \[\ce{Br2}\] in carbon disulphide at 273 K.
Reason: Bromine polarises in carbon disulphide.
How can phenol be converted to aspirin?
Convert the following:
Ethyl alcohol into ethyl acetate.
How are the following conversions carried out?
Methyl magnesium bromide→2-Methylpropan-2-ol.
Draw structure of the following compound.
2. 5-Diethylphenol
Draw structure of the following compound.
2-Methoxypropane
Give the structures of Thiosulphuric acid and Peroxy monosulphuric acid.
Write structural formulae for:
Salicylic acid
The IUPAC name of 
is ______.
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:
\[\begin{array}{cc}
\phantom{...............}\ce{CH3}\\
\phantom{.............}|\\
\ce{CH3 - CH - CH - C - CH3}\\
|\phantom{......}|\phantom{......}|\\
\phantom{...}\ce{CH3}\phantom{..}\ce{OH}\phantom{...}\ce{CH3}
\end{array}\]
