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प्रश्न
Write structural formula for pentane-1,4-diol.
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उत्तर
\[\begin{array}{cc}
\ce{H3C - HC - H2C - H2C - CH2 - OH}\\
|\phantom{......................}\\
\ce{\underset{Pentane-1,4-diol}{OH}\phantom{....................}}\\
\end{array}\]
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.
\[\begin{array}{cc}
\phantom{............}\ce{CH2OH}\\
\phantom{......}|\\
\ce{CH3 - CH2 - CH - CH - CH - CH3}\\
\phantom{......}|\phantom{............}|\phantom{.}\\
\phantom{........}\ce{CH2Cl}\phantom{......}\ce{CH3}\phantom{}
\end{array}\]
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.
\[\begin{array}{cc}
\ce{CH3 - C = C - CH2OH}\\
\phantom{}|\phantom{....}|\phantom{....}\\
\phantom{}\ce{CH3}\phantom{.}\ce{Br}\phantom{...}
\end{array}\]
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:
C6H5 – O – C2H5
Write IUPAC name of the following compound:
\[\begin{array}{cc}
\ce{CH3 - CH2 - O - CH - CH2 - CH3}\\
\phantom{...}|\\
\phantom{.....}\ce{CH3}
\end{array}\]
Write structures of the compounds whose IUPAC names are as follows:
3-Chloromethylpentan-1-ol.
- 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:
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)3 C- NH2
How is phenol converted into the following?
benzoquinone
How is phenol converted into the following?
picric acid
Give reasons Fluoride ion has higher hydration enthalpy than chloride ion.
Write the IUPAC name of the following compound:
Write the structures of the products when Butan-2-ol reacts with SOCl2
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 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
Write IUPAC names of the following
In a carbinol system of nomenclature tert.butyl alcohol is named as _______________
Glycerol is ____________.
Give IUPAC names of the following compound:
One of the following is not a dihydroxy derivative of benzene.
Cresol has ____________.
Ethyl alcohol is industrially prepared from ethylene by:
HBr reacts fastest with ____________.
n-Propyl alcohol and isopropyl alcohol can be chemically distinguished by which reagent?
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:
\[\ce{HC ≡ CH ->[HgSO4][H2SO4] ->[CH3MgBr][H2O] ->[PBr3]}\]
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:
\[\begin{array}{cc}
\ce{CH3-CH-OCH3}\\
|\phantom{....}\\
\ce{CH3}\phantom{..}
\end{array}\]
IUPAC name of the compound \[\begin{array}{cc}
\ce{CH3 - CH - OCH3}\\
\phantom{}|\phantom{....}\\
\phantom{}\ce{CH3}\phantom{..}
\end{array}\] is ______.
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.
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 |
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: Phenol forms 2, 4, 6 – tribromophenol on treatment with \[\ce{Br2}\] in carbon disulphide at 273 K.
Reason: Bromine polarises in carbon disulphide.
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?
How can phenol be converted to aspirin?
Write the IUPAC name of the following compound.
Write a chemical reaction for the following conversion:
Acetic acid into ethyl alcohol.
Identify A and B in the following:
How are the following conversions carried out?
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
Draw structure of the following compound.
2-Methoxypropane
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
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.
\[\begin{array}{cc}
\phantom{................}\ce{CH3}\\
\phantom{.............}|\\
\ce{CH3 - CH - CH - C -CH3}\\
\phantom{.}|\phantom{......}|\phantom{......}|\\
\phantom{....}\ce{CH3\phantom{...}\ce{OH}\phantom{...}\ce{CH3}}\
\end{array}\]
Write IUPAC 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:
\[\begin{array}{cc}
\phantom{...............}\ce{CH3}\\
\phantom{.............}|\\
\ce{CH3 - CH - CH - C - CH3}\\
|\phantom{......}|\phantom{......}|\\
\phantom{...}\ce{CH3}\phantom{..}\ce{OH}\phantom{...}\ce{CH3}
\end{array}\]
