(C) The reaction of a Grignard reagent $(CH_3MgBr)$ with formaldehyde $(HCHO)$ followed by acid hydrolysis $(H_3O^+)$ yields a primary alcohol $(CH_3C

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(C) The reaction of a Grignard reagent $(CH_3MgBr)$ with formaldehyde $(HCHO)$ followed by acid hydrolysis $(H_3O^+)$ yields a primary alcohol $(CH_3CH_2OH)$.The reaction mechanism is as follows:$HCHO + CH_3MgBr \rightarrow CH_3CH_2OMgBr$$CH_3CH_2OMgBr + H_2O \rightarrow CH_3CH_2OH + Mg(OH)Br$Thus,the compound $A$ is formaldehyde $(HCHO)$.

Class 12 Chemistry 8-1.Aldehydes and Ketones Properties

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Identify the compound $A$ in the following reaction: $A + CH_3MgBr$ $\xrightarrow{\text{dry ether}} \text{intermediate}$ $\xrightarrow{H_3O^+} CH_3CH_2OH + Mg(Br)(OH)$

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A
Acetic acid
B
Acetaldehyde
C
Formaldehyde
D
Acetone

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Identify the compound $A$ in the following reaction: $A + CH_3MgBr$ $\xrightarrow{\text{dry ether}} \text{intermediate}$ $\xrightarrow{H_3O^+} CH_3CH_2OH + Mg(Br)(OH)$

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Benzaldehyde condenses with $N,N$-dimethylaniline in the presence of anhydrous $ZnCl_2$ to give:

The reagent$(s)$ which can be used to bring about the following transformation is(are):$(A)$ $LiAlH_4$ in $(C_2H_5)_2O$$(B)$ $BH_3$ in $THF$$(C)$ $NaBH_4$ in $C_2H_5OH$$(D)$ Raney $Ni / H_2$ in $THF$

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The reagent$(s)$ which can be used to bring about the following transformation is(are):
$(A)$ $LiAlH_4$ in $(C_2H_5)_2O$
$(B)$ $BH_3$ in $THF$
$(C)$ $NaBH_4$ in $C_2H_5OH$
$(D)$ Raney $Ni / H_2$ in $THF$