CH₃CHI₂ $\stackrel{\mathrm{KCN}}{\to }$ $\stackrel{{\mathrm{H}}_2\mathrm{O} , ∆}{\to }$ ?

Here the end product would be :

• 2 - cyano propionic acid

• ethane - l , 1 - dicarboxylic acid

• 2 - methyl ethanoic acid

• propionic acid

Identify the product Y in the sequence :

CH₃CHO + CH₃MgI $\stackrel{\mathrm{Ether}}{\to }$ X $\stackrel{{\mathrm{H}}_2\mathrm{O}/{\mathrm{H}}^{+}}{\to }$ Y , is

• CH₃OH

• CH₃CH₂OH

• (CH₃)₂CHOH

• (CH₃)₃COH

Two moles of acetic acid are heated with P₂O₅ .The product formed is :

• 2 moles of ethyl alcohol

• formic anhydride

• acetic anhydride

• 2 moles of methyl cyanide

The reaction , ROH + H₂CN₂ in the presence of HBF₄ , gives the following product :

• ROCH₃

• RCH₂OH

• ROHCN₂N₂

• RCH₂CH₃

Assertion : p-N,N-dimethylaminobenzaldehyde undergoes benzoin condensation.

Reason : The aldehydic (-CHO) group is meta directing.

• If both assertion and reason are true and reason is the correct explanation of assertion

• If both assertion and reason are true but reason is not the correct explanation of assertion

• If assertion is true but reason is false

• If both assertion and reason are false

Oxidation product of 1,2-cyclopentanediol with HIO₄ gives

• OHC-(CH₂)₃-CHO

• 

• COOH-CH-CH₂-CH₂-COOH

• None of these

157.

If the enolate ion combines with carbonyl group of ester , we get :

• aldol

• $\mathrm{\alpha }$ , $\mathrm{\beta }$ - unsaturated ester

• $\mathrm{\beta }$ - keto aldehyde

• acid

Which of the following compounds will react with NaHCO₃  solution to give sodium salt and carbon dioxide ?

• Acetic acid

• n - hexanol

• Phenol

• Both (b) and (c)

Which will give chiral molecule ?

• CH₃COCl $\stackrel{{\mathrm{LiAlH}}_4}{\to }$

• C₂H₅CHO $\underset{{\mathrm{H}}^{+}/{\mathrm{H}}_2\mathrm{O}}{\overset{{\mathrm{CH}}_3\mathrm{MgBr}}{\to }}$

• (CH₃)₂CHC₂H₅ $\stackrel{\mathrm{Cu}}{\to }$

• CH₃-CH=C(CH₃)₂ $\stackrel{{\mathrm{Cl}}_2}{\to }$

Assertion : (CH₃)₃CCOC(CH₃)₃ and acetone can be distinguished by the reaction with NaHSO₃.

Reason : HSO₃^- is the nucleophile in bisulphite addition.

• If both assertion and reason are true and reason is the correct explanation of assertion

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.