Which of the following reactions converts the carbonyl group of aldehydes and ketones to a methylene group on treatment with zinc amalgam and concentrated $HCl$?
- AWolff-Kishner reduction
- BStephen reduction
- CClemmensen reduction
- DRosenmund reduction
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Which one of the following gives a yellow precipitate with iodine and $NaOH$ solution?
Which of the following has the most acidic hydrogen?
MediumIIT 2000
View SolutionWhich of the following will undergo deprotonation most readily in a basic medium?
DifficultJEE MAIN 2023
View SolutionMatch the reactants in Column-$I$ with the major products in Column-$II$ obtained after the reaction.
Column-$I$ (Reactants) Column-$II$ (Major Product) $A$. $HCHO \xrightarrow{(i) CH_3MgBr, (ii) H_2O}$ $i$. $C_6H_5CHOHCH_3$ $B$. $C_6H_5CHO \xrightarrow{(i) CH_3MgBr, (ii) H_2O}$ $ii$. $(CH_3)_3COH$ $C$. $CH_3COCH_3 \xrightarrow{(i) CH_3MgBr, (ii) H_2O}$ $iii$. $CH_3CHOHCH_3$ $D$. $CH_3CHO \xrightarrow{(i) CH_3MgBr, (ii) H_2O}$ $iv$. $CH_3CH_2OH$
| Column-$I$ (Reactants) | Column-$II$ (Major Product) |
| $A$. $HCHO \xrightarrow{(i) CH_3MgBr, (ii) H_2O}$ | $i$. $C_6H_5CHOHCH_3$ |
| $B$. $C_6H_5CHO \xrightarrow{(i) CH_3MgBr, (ii) H_2O}$ | $ii$. $(CH_3)_3COH$ |
| $C$. $CH_3COCH_3 \xrightarrow{(i) CH_3MgBr, (ii) H_2O}$ | $iii$. $CH_3CHOHCH_3$ |
| $D$. $CH_3CHO \xrightarrow{(i) CH_3MgBr, (ii) H_2O}$ | $iv$. $CH_3CH_2OH$ |
Difficult
View SolutionFehling's solution is a mixture of two solutions. One of them is $CuSO_4$. What does the other solution contain?
Medium
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