Aldehydes & ketones & carboxylic acids practice · Mixed difficulty

In the $\alpha -$ halogenation of aliphatic acids (HVZ reaction) the catalyst used is:

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.

Acetaldehyde is used:

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

Arrange the following in decreasing order of their acidic strength

A) $C{H_3}C{H_2}OH$ B) $C{H_3}COOH$ C) $ClC{H_2}COOH$
D) $FC{H_2}COOH$ E) ${C_6}{H_5}C{H_2}COOH$

3-pentanol on reaction with aluminium tertiary butoxide in the presence of acetone gives

Reaction between ${\left( {{\mathrm{C}_2}{\mathrm{H}_5}} \right)_2}\mathrm{Cd }\;\mathrm{and }\;\mathrm{C}{\mathrm{H}_3}\mathrm{COCl}$ l leads to the formation of

Which of the following reactions is not an
example for nucleophilic addition - elimination
reaction?

The correct order of decreasing boiling points of $\mathrm{C}{\mathrm{H}_3}\mathrm{CON}{\mathrm{H}_2}\;(A),\mathrm{C}{\mathrm{H}_3}\mathrm{COCl}\;(B),\mathrm{C}{\mathrm{H}_3}\mathrm{COOH}\;\mathrm{(C),}\;\mathrm{and}\,{\left( {\mathrm{C}{\mathrm{H}_3}\mathrm{CO}} \right)_2}\mathrm{O}\;(D),$ is:

Semicarbazide is:

$C{H_3} - \mathop C\limits^{\begin{array}{cccccccccccccccccccc} O \\ {||} \end{array}} - OH\xrightarrow{{N{H_3}}}\left( A \right)\xrightarrow{{A{l_2}{O_3}}}\left( B \right)\xrightarrow{{{H_3}{O^ + }}}\left( D \right),\,\,\,\,D \,\,\,{\text{is}}$

An acyl halide is formed when $\mathrm{PC}{\mathrm{l}_5}$ reacts with an:

Which of the following will not give Iodoform test:

Which of the following products is not possible in the reaction given below?

$\left(\mathrm{C}_2 \mathrm{H}_5 \mathrm{COO}\right)_2 \mathrm{Ca}+\left(\mathrm{C}_6 \mathrm{H}_5 \mathrm{COO}\right)_2 \mathrm{Ca} \xrightarrow[\text { distillation }]{\text { Dry }}$

Ethanal reacts with alkali to give 3-hydroxybutanal. This reaction is:

Vinegar is a solution of acetic acid which is

Statement I: The boiling points of aldehydes and ketones are lower than hydrocarbons and ethers of comparable masses.

Statement II: It is due to weak molecular association in aldehydes and ketones arising out of the dipole-dipole interactions.

Cannizzaro reaction occurs with

The rate of esterification of acetic acid with methyl alcohol (I), ethyl alcohol (II), isopropyl alcohol (III) and tertiary butyl alcohol (IV) follows in the order

Which of the following reactant give Tollen’s reagent and Fehling’s solution test?

Which one is a polyprotic acid?

The reaction of a carboxylic acid gives effervescences of $\mathrm{C}{\mathrm{O}_2}$ with $\mathrm{NaHC}{\mathrm{O}_3}$. The $\mathrm{C}{\mathrm{O}_2}$ comes from:

Which reagent is useful in separating benzoic acid from phenol?

$R - COOH\xrightarrow[{2)\,{H_3}{O^ + }}]{{1)\,LiAl{H_4}/either}}{\text{product}}\,{\text{is}}$

$HCHO + {C_6}{H_5}CHO\xrightarrow[{}]{{con.\,NaOH}}{\text{products}}\,\,{\text{are}}$

Incorrect method of preparation for alcohols from
the following is:

Cannizaro reaction is performed by

Wolff-Kishner’s reaction is: