Chemistry : Aldehydes, Ketones and Carboxylic Acids

Glacial acetic acid is obtained by

• chemically separating acetic acid

• treating vinegar with dehydrating agents

• crystallising, separating and melting acetic acid

• distilling vinegar

An organic acid without a carboxylic acid group is

• picric acid

• oxalic acid

• vinegar

• ascorbic acid

An ester used as medicine is

• ethyl benzoate

• methyl salicylate

• methyl acetate

• ethyl acetate

Reaction of aniline with benzaldehyde is

• polymerisation

• condensation

• addition

• substitution

Match List-I with List-II and select the correct answer using the codes given below:

List I (Name reaction)	List II (Reagent/ Catalyst)
A. Tischenko's reaction	1. SnCl2/ HCl
B. Baeyer- villiger oxidation	2. Zn/Hg, conc.HCl
C. Stephen's reduction	3. (C2H5O)3Al
D. Clemmensen reduction	4. H2SO5

• A   B   C  D

  4   3   1   2

• A  B  C   D

  3  4   1   2

• A  B  C  D

  1  3   2  4

• A  B  C  D

  3  2   4  1

$$\begin{gathered} \underset{\mathrm{A}}{{\mathrm{CH}}_3\mathrm{COOH} }\stackrel{{\mathrm{PCl}}_5}{\to }\left[\mathrm{B}\right] \\ \underset{\mathrm{A}}{{\mathrm{CH}}_3\mathrm{COOH} }\stackrel{\mathrm{NaOH}}{\to }\left[\mathrm{C}\right] \\ \left[\mathrm{B}\right] + \left[\mathrm{C}\right] \to \left[\mathrm{D}\right] \mathrm{ompounds} \left[\mathrm{B}\right], \left[\mathrm{C}\right] \mathrm{and} \left[\mathrm{D}\right] \mathrm{are} \end{gathered}$$

• Acetyl Chloride, Acetic anhydride and Sodium acetate
  [B]                        [C]                       [D]

• Sodium acetate, Acetic anhydride and Acetyl chloride
  [B]                      [C]                            [D]

• Acetyl chloride, Sodium acetate and Acetic anhydride
  [B]                     [C]                         [D]

• Acetic anhydride, Acetyl chloride and Sodium acetate
  [B]                      [C]                          [D]        

Methanal is

• CH₃CHO

• CH₃COCH₃

• CH₂OH

• HCHO

Consider the following reaction

$\mathrm{CH}\equiv \mathrm{CH} + 2\left[\mathrm{O}\right] \stackrel{{\mathrm{SeO}}_2}{\to }\left[\mathrm{A}\right]$

The product [A] is

• HCOOH (formic acid)

• CH₃COOH  (acetc acid)

• CHO-CHO (glyoxal)

• C₂O₄H₂ (oxalic acid)

Iodoform test is not answered by

• C₂H₅OH

• CH₃OH

• CH₃COCH₃

• CH₃-CH(OH)-CH₃

Benzoin is

• compound containing an aldehyde and a ketonic group

• α,β-unsaturated acid

• α-hydroxy aldehyde

• α-hydroxy ketone