Aqueous 10% NaHCO₃ solution is used as a reagent for identifying 'A'. Which of the following compounds yield 'A' on hydrolysis?

• CH₃COOC₂H₅

• C₂H₅-COO-C₂H₅

• CH₃CHO

• CH₃CH₂OH

The heating of phenyl-methyl ethers with HI produces.

• Ethyl chlorides

• Iodobenzene

• Phenol

• Phenol

The acidic strength of the given compounds follows the order

I. CH₃-CH=CH-COOH

II. CH₃-$\underset{..}{\overset{..}{\mathrm{O}}}$-CH=CH-COOH

III. CH₃=CH₂-COOH

• II > III > I

• III > II > I

• II > I > III

• I > II > III

Assertion : Phenol is more acidic than ethanol.

Reason : Phenoxide ion is resonance stabilised.

• 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.

155.

Which one is the most acidic compound?

• 
• 
• 
• 

The reaction,

C₆H₅ONa + CO₂ +H₂O $\to$C₆H₅OH + NaHCO₃ suggests that

• phenol is a stronger acid than carbonic acid

• carbonic acid is a stronger acid than phenol

• water is a stronger acid than phenol

• None of these.

Which one is the correct order of acidity?

• CH₂= CH₂> CH₃– CH = CH₂> CH₃– C ≡ CH > CH ≡ CH

• CH ≡  CH > CH₃– C ≡  CH > CH₂= CH₂> CH₃– CH₃

• CH ≡ CH > CH₂= CH₂> CH₃– C ≡  CH >CH₃– CH₃

• CH ≡ CH > CH₂= CH₂> CH₃– C ≡  CH >CH₃– CH₃

 $\mathrm{Phenol} \underset{\left(\mathrm{ii}\right) {\mathrm{CO}}_2/{140}^{\mathrm{o}} \mathrm{C}}{\overset{\left(\mathrm{i}\right) \mathrm{NaOH}}{\to }}\mathrm{A} \stackrel{{\mathrm{H}}^{+}/{\mathrm{H}}_2\mathrm{O}}{\to } \mathrm{B}\stackrel{{\mathrm{Ac}}_2\mathrm{O}}{\to }\mathrm{C}$

In the above reaction, end product 'C' is

• Salicylaldehyde

• Salicyclic acid

• Phenylacetate

• Aspirin

The product (P) is

Identify A and predict the type of reaction