Chemistry : Aldehydes, Ketones and Carboxylic Acids

Upon treatment with I₂ and aqueous NaOH, which of the following compounds will form iodoform?

• CH₃CH₂CH₂CH₂CHO

• CH₃CH₂COCH₂CH₃

• CH₃CH₂CH₂CH₂CH₂OH

• CH₃CH₂CH₂CH(OH)CH₃

Upon treatment with Al(OEt)₃ followed by usual reactions (work up), CH₃CHO will produce:

• only CH₃COOCH₂CH₃

• a mixture of CH₃COOH and EtOH

• only CH₃COOH

• only EtOH

The most contributing tautomeric enol form of MeCOCH₂CO₂ Et is:

• CH₂=C(OH)CH₂CO₂Et

• MeC(OH)=CHCO₂Et

• MeCOCH=C(OH)OEt

• CH₂=C(OH)CH=C(OH)OEt

By passing excess Cl₂(g) in boiling toluene, which one of the following compounds is exclusively formed?

An equimolar mixture of toluene and chlorobenzene is treated with a mixture of conc. H₂SO₄ and conc. HNO₃. Indicate the correct statement from the following.

• p-nitrotoluene is formed in excess

• equimolar amounts of p-nitrotoluene and p-nitro chlorobenzene are formed

• p-nitro chlorobenzene is formed in excess

• m-nitro chlorobenzene is formed in excess

In the following reaction, the product E is

Among the following compounds, the one(s) that gives (give) effervescence with aqueous NaHCO₃ solution is (are)

$\underset{\mathrm{I}}{({\mathrm{CH}}_3\mathrm{CO}{)}_{2 }} \underset{\mathrm{II}}{{\mathrm{CH}}_3\mathrm{COOH}} \underset{\mathrm{III}}{\mathrm{PhOH}} \underset{\mathrm{IV}}{{\mathrm{CH}}_3\mathrm{COCHO}}$

• I and II

• I and III

• Only II

• I and IV

An organic compound with molecular formula C₉H₁₀O forms 2, 4-DNP derivative, reduces Tollen's reagent and undergoes Cannizaro reaction. On vigorous oxidation, it gives a dicarboxylic acid which is used in the preparation of terylene. Identify the organic compound.

Deep blue CuSO₄^.5H₂O is converted to a bluish-white salt at 100^oC. At 250^oC and 750^oC it is then transformed to white powder and black material respectively. Identify the salts.

Two aromatic compounds having formula C₇H₈O which are easily identifiable by FeCl₃ solution test (violet colouration) are:

• o-cresol and benzyl alcohol

• m-cresol and p-cresol

• o-cresol and p-cresol

• methyl phenyl ether and benzyl alcohol