Convert the following:

Bromobenzene to benzoic acid

Important Questions on Aldehydes, Ketones and Carboxylic Acids

MEDIUM

12th CBSE

IMPORTANT

Chemistry Crash Course (Based on Revised Syllabus-2023)>Chapter 8 - Aldehydes, Ketones and Carboxylic Acids>Sample Paper>Q 57

Write the name of the reaction, structure and IUPAC name of the product formed when ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{CN}$ reacts with stannous chloride in the presence of hydrochloric acid followed by hydrolysis.

HARD

12th CBSE

IMPORTANT

Chemistry Crash Course (Based on Revised Syllabus-2023)>Chapter 8 - Aldehydes, Ketones and Carboxylic Acids>Sample Paper>Q 58

You are given four organic compounds $“\mathrm{A}”, “\mathrm{B}”, “\mathrm{C}”$ and $“\mathrm{D}”$. The compounds $“\mathrm{A}”, “\mathrm{B}”$ and $“\mathrm{C}”$ form an orange- red precipitate with $2,4 \mathrm{DNP}$ reagent. Compounds $“\mathrm{A}”$ and $“\mathrm{B}”$ reduce Tollen’s reagent while compounds $“\mathrm{C}”$ and $“\mathrm{D}”$ do not. Both $“\mathrm{B}”$ and $“\mathrm{C}”$ give a yellow precipitate when heated with iodine in the presence of $\mathrm{NaOH}.$ Compound $“\mathrm{D}”$ gives brisk effervescence with sodium bicarbonate solution. Identify $“\mathrm{A}”, “\mathrm{B}”, “\mathrm{C}”$ and $“\mathrm{D}”$ given the number of carbon atoms in three of these carbon compounds is three while one has two carbon atoms. Give an explanation for your answer.

HARD

12th CBSE

IMPORTANT

Chemistry Crash Course (Based on Revised Syllabus-2023)>Chapter 8 - Aldehydes, Ketones and Carboxylic Acids>Sample Paper>Q 59

An organic compound with molecular formula ${\mathrm{C}}_7{\mathrm{H}}_7{\mathrm{NO}}_2$ exists in three isomeric forms, the isomer ' $\mathrm{A}$' has the highest melting point of the three. '$\mathrm{A}$' on reduction gives compound '$\mathrm{B}$' with molecular formula ${\mathrm{C}}_7{\mathrm{H}}_9 \mathrm{N}$. ' $\mathrm{B}$' on treatment with ${\mathrm{NaNO}}_2/\mathrm{HCl}$ at $0-5°\mathrm{C}$ to form compound ' $\mathrm{C}$'. On treating $\mathrm{C}$ with ${\mathrm{H}}_3{\mathrm{PO}}_2$, it gets converted to $\mathrm{D}$ with formula ${\mathrm{C}}_7{\mathrm{H}}_8$, which on further reaction with ${\mathrm{CrO}}_2{\mathrm{Cl}}_2$ followed by hydrolysis forms '$\mathrm{E}$' ${\mathrm{C}}_7{\mathrm{H}}_6\mathrm{O}$. Write the structure of compounds $\mathrm{A}$ to $\mathrm{E}$. Write the chemical equations involved.

MEDIUM

12th CBSE

IMPORTANT

Chemistry Crash Course (Based on Revised Syllabus-2023)>Chapter 8 - Aldehydes, Ketones and Carboxylic Acids>Sample Paper>Q 60

Arrange the following in decreasing boiling point.
${\mathrm{CH}}_3\mathrm{COOH},{\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH},{\mathrm{CH}}_3{\mathrm{NH}}_2,{\mathrm{CH}}_3{\mathrm{OCH}}_3$