Name the electrophile produced in the reaction of benzene with benzoyl chloride in the presence of anhydrous${\mathrm{AlCl}}_3.$Name the reaction also.

Arrange the following in decreasing order of their acidic strength and give reason for your answer.

${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{OH}, {\mathrm{CH}}_3\mathrm{COOH}, {\mathrm{ClCH}}_2\mathrm{COOH}, {\mathrm{FCH}}_2\mathrm{COOH}, {\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{CH}}_2\mathrm{COOH}$

Arrange the following in decreasing order of their acidic strength. Give explanation for the arrangement.

${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{COOH}, {\mathrm{FCH}}_2\mathrm{COOH}, {\mathrm{NO}}_2{\mathrm{CH}}_2\mathrm{COOH}$

Alkenes and carbonyl compounds , both contain a$\mathrm{\pi }$ bond but alkenes show electrophilic addition reactions whereas carbonyl compounds show nucleophilic addition reactions. Explain.

Identify the compounds$\mathrm{A}, \mathrm{B}$and $\mathrm{C}$ in the following reaction

Match the acids given in Column I with their correct $\mathrm{IUPAC}$ names given in Column II.

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