When $Phenol$ is heated with $phthalic \ anhydride$ in concentrated $sulphuric \ acid$ and the hot reaction mixture is poured into a dilute solution of $sodium \ hydroxide$,the product formed is
- A$Alizarin$
- B$Methyl \ orange$
- C$Fluorescein$
- D$Phenolphthalein$
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Similar Questions
The product $(B)$ will be:
Medium
View SolutionMatch the following $pKa$ values:
Acid $pKa$ $(a)$ Phenol $(i)$ $16$ $(b)$ $p$-Nitrophenol $(ii)$ $0.78$ $(c)$ Ethanol $(iii)$ $10$ $(d)$ Picric acid $(iv)$ $7.1$
| Acid | $pKa$ |
|---|---|
| $(a)$ Phenol | $(i)$ $16$ |
| $(b)$ $p$-Nitrophenol | $(ii)$ $0.78$ |
| $(c)$ Ethanol | $(iii)$ $10$ |
| $(d)$ Picric acid | $(iv)$ $7.1$ |
MediumKCET 2019
View SolutionIdentify the product in the following reaction:
Phenol + $CHCl_3 + NaOH \rightarrow \text{Product}$
Phenol + $CHCl_3 + NaOH \rightarrow \text{Product}$
The product $(A)$ in the following reaction is:
Easy
View SolutionMatch the reagents in List-$I$ with the product in List-$II$ obtained from phenol.
List-$I$ List-$II$ $a$. $(i)$ $NaOH$,$(ii)$ $CO_2$,$(iii)$ $H^{+}$ $i$. Benzoquinone $b$. $(i)$ Aqueous $NaOH + CHCl_3$,$(ii)$ $H^{+}$ $ii$. Benzene $c$. $Zn$ dust,$\Delta$ $iii$. Salicylaldehyde $d$. $Na_2Cr_2O_7, H_2SO_4$ $iv$. Salicylic acid
Choose the correct answer from the options given below:
| List-$I$ | List-$II$ |
|---|---|
| $a$. $(i)$ $NaOH$,$(ii)$ $CO_2$,$(iii)$ $H^{+}$ | $i$. Benzoquinone |
| $b$. $(i)$ Aqueous $NaOH + CHCl_3$,$(ii)$ $H^{+}$ | $ii$. Benzene |
| $c$. $Zn$ dust,$\Delta$ | $iii$. Salicylaldehyde |
| $d$. $Na_2Cr_2O_7, H_2SO_4$ | $iv$. Salicylic acid |
Choose the correct answer from the options given below:
MediumNEET 2022
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