Which of the following reactions involves the formation of a carbene intermediate?
- AReimer-Tiemann reaction
- BCarbylamine reaction
- CHoffmann bromamide reaction
- DBoth $A$ and $B$
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$A, B, C, D$ in the following reactions are
DifficultTS EAMCET 2022
View SolutionMatch List-$I$ with List-$II$.
List-$I$ (Test) List-$II$ (Observation) $A$. $Br_2$ water test $I$. Yellow orange or orange red precipitate formed $B$. Ceric ammonium nitrate test $II$. Reddish orange colour disappears $C$. Ferric chloride test $III$. Red colour appears $D$. $2,4-DNP$ test $IV$. Blue,Green,violet or Red colour appear
Choose the correct answer from the options given below:
| List-$I$ (Test) | List-$II$ (Observation) |
| $A$. $Br_2$ water test | $I$. Yellow orange or orange red precipitate formed |
| $B$. Ceric ammonium nitrate test | $II$. Reddish orange colour disappears |
| $C$. Ferric chloride test | $III$. Red colour appears |
| $D$. $2,4-DNP$ test | $IV$. Blue,Green,violet or Red colour appear |
Choose the correct answer from the options given below:
The increasing order of boiling points of the following is:
Molecule Label $CH_3-O-CH_3$ $I$ $CH_3CHO$ $II$ $CH_3CH_2CH_3$ $III$ $CH_3CH_2OH$ $IV$
| Molecule | Label |
|---|---|
| $CH_3-O-CH_3$ | $I$ |
| $CH_3CHO$ | $II$ |
| $CH_3CH_2CH_3$ | $III$ |
| $CH_3CH_2OH$ | $IV$ |
Match the common names of the ethers given in Column $(I)$ with their structures in Column $(II)$ and their $\text{IUPAC}$ names in Column $(III)$.
Column $(I)$ Column $(II)$ Column $(III)$ $(A)$ Methyl isopropyl ether $(1)$ ${C_6}{H_5}O{(CH_2)_6}CH_3$ $(i)$ $2$-Methoxypropane $(B)$ Phenyl isopentyl ether $(2)$ $CH_3-O-CH(CH_3)_2$ $(ii)$ Methoxyethane $(C)$ Heptyl phenyl ether $(3)$ ${C_6}{H_5}-O-CH_2CH_2CH(CH_3)_2$ $(iii)$ $1$-Phenoxyheptane $(D)$ Ethyl methyl ether $(4)$ $CH_3CH_2-O-CH_3$ $(iv)$ $1$-Methoxy$-3-$methylbutane (or $3$-Methylbutoxybenzene)
| Column $(I)$ | Column $(II)$ | Column $(III)$ |
|---|---|---|
| $(A)$ Methyl isopropyl ether | $(1)$ ${C_6}{H_5}O{(CH_2)_6}CH_3$ | $(i)$ $2$-Methoxypropane |
| $(B)$ Phenyl isopentyl ether | $(2)$ $CH_3-O-CH(CH_3)_2$ | $(ii)$ Methoxyethane |
| $(C)$ Heptyl phenyl ether | $(3)$ ${C_6}{H_5}-O-CH_2CH_2CH(CH_3)_2$ | $(iii)$ $1$-Phenoxyheptane |
| $(D)$ Ethyl methyl ether | $(4)$ $CH_3CH_2-O-CH_3$ | $(iv)$ $1$-Methoxy$-3-$methylbutane (or $3$-Methylbutoxybenzene) |
Medium
View SolutionMatch the reactions given in Column-$I$ with the bond broken in Column-$II$.
Column-$I$ (Reaction) Column-$II$ (Bond broken) $(A)$ $RCH_2OH \xrightarrow{CrO_3} RCHO$ $(i)$ $C-O$ bond breaks. $(B)$ Phenol $\xrightarrow{HNO_3}$ $p$-Nitrophenol + $o$-Nitrophenol (ii) $O-H$ bond breaks. $(C)$ Phenol + $NaOH \rightarrow$ Sodium phenoxide + $H_2O$ (iii) $O-H$ and $C-H$ bonds break. $(D)$ $CH_3CH_2CH_2OH \xrightarrow{H_2SO_4, \Delta} CH_3CH=CH_2$ (iv) $C-H$ bond breaks.
| Column-$I$ (Reaction) | Column-$II$ (Bond broken) |
|---|---|
| $(A)$ $RCH_2OH \xrightarrow{CrO_3} RCHO$ | $(i)$ $C-O$ bond breaks. |
| $(B)$ Phenol $\xrightarrow{HNO_3}$ $p$-Nitrophenol + $o$-Nitrophenol | (ii) $O-H$ bond breaks. |
| $(C)$ Phenol + $NaOH \rightarrow$ Sodium phenoxide + $H_2O$ | (iii) $O-H$ and $C-H$ bonds break. |
| $(D)$ $CH_3CH_2CH_2OH \xrightarrow{H_2SO_4, \Delta} CH_3CH=CH_2$ | (iv) $C-H$ bond breaks. |
Difficult
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