Aldehydes & ketones & carboxylic acids practice · Medium

Acetaldehyde gives orange coloured precipitate on treatment with

$\mathrm{C}_4 \mathrm{H}_8 \mathrm{Cl}_2(\mathrm{X}) \xrightarrow{\text { aq. Acetone }} \mathrm{C}_4 \mathrm{H}_8 \mathrm{O}(\mathrm{Y}) \xrightarrow[\Delta]{\mathrm{NaOH}, \mathrm{I}_2} \mathrm{CHI}_3+$ Acid Salt $(\mathrm{Z})$. Compound $\mathrm{X}$ can be:

Which of the following is Lindlar catalyst?

Among the following, the most acidic is

Acetone is used:

In which of the following reactions, both oxidized and reduced forms of the same compound are obtained?

Identify A and B in the following reaction
$\begin{array}{l} \mathrm{C}{\mathrm{H}_3} - \mathrm{C}{\mathrm{H}_3}\xleftarrow{B}\mathrm{C}{\mathrm{H}_3}\mathrm{COOH}\xrightarrow{A}\mathrm{C}{\mathrm{H}_3}\mathrm{C}{\mathrm{H}_2}\mathrm{OH}\\ \;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\mathrm{A}\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\mathrm{B} \end{array}$

Through which of the following reactions number of carbon atoms can be increased in the chain?

(i) Grignard reaction

(ii) Cannizzaro's reaction

(iii) Aldol condensation

(iv) HVZ reaction

Choose the correct option.

Assertion (A): Benzaldehyde is more reactive than ethanal towards nucleophilic attack.

Reason (R): Both benzaldehyde and acetaldehyde have alpha hydrogens.

Benzaldehyde can be prepared from benzene by passing vapours of ____ and ____ in its solution in presence of catalyst mixture of aluminium chloride and cuprous chloride. The reaction is known is _____

Salol (phenyl salicylate ) is used as an:

Statement I: Acetaldehyde cannot be prepared by the Rosenmund reduction.

Statement II: Formyl chloride is unstable at room temperature.

Which of the following compound is least reactive towards hydrolysis?

2-pentanone and 3-petanone can be distinguished by

Which will not give acetamide (no heating) on reaction with ammonia?

Rosenmund’s reduction is used for the preparation of

The number of aldehyde isomers for ${C_4}{H_8}O$ will be

The elimination of $\mathrm{C}{\mathrm{O}_2}$ from a carboxylic acid is known as:

Formaldehyde and formic acid can be distinguished by:

0.759 g of a silver salt of a dibasic organic acid on ignition left 0.463 g metallic silver. The equivalent weight of acid is:

Ketones can be converted to alkanes directly on reaction with

An organic compound is boiled with alcoholic potash. The product is cooled and acidified with HCl. A white solid separates out. The starting compound may be

Assertion (A): A bright silver mirror is produced during the warming of an aldehyde with freshly prepared ammoniacal silver nitrate solution.

Reason (R): A bright silver mirror is produced due to the formation of silver metal.

The most acidic of the following is

Nitration of salicylic acid will give:

The products A and B are
$\left(\mathrm{CH}_3\right)_3 \mathrm{C}-\mathrm{CHO} \xrightarrow[\text { (ii) } \mathrm{H}^{+}]{\text {(i) } \mathrm{con.}{\mathrm{NaOH}}} \mathrm{A}+\mathrm{B}$

The strongest acid is:

The correct order of acidic strengths of the carboxylic acids is

Read the following statements and choose the correct option

(i) The carbonyl carbon atom is $\mathrm{sp}^2$-hybridised

(ii) The carbonyl carbon is an electrophilic (Lewis acid) centre

(iii) The carbonyl oxygen is a nucleophilic (Lewis base) centre

(iv) Carbonyl compounds are non- polar in nature.

On warming formic acid with ammoniacal silver nitrate, the product formed is: