31.

In the brown ring complex [Fe(H₂O)₅(NO)]SO₄, nitric oxide behaves as

• NO⁺

• neutral NO molecule

• NO^-

• NO^2-

On passing 'C ampere of current for time 't' sec through 1 L of 2 (M) CuSO₄ solution (atomic weight of Cu= 63. 5), the amount 'm' of Cu (in gram) deposited on cathode will be

• m = Ct / (63.5 x 96500)

• m = Ct / (31.25 x 96500)

• m = (C x 96500) / (31.25xt)

• m = (31.25 X C x t) / 96500

Which one of the following methods is used to prepare Me₃COEt with a good yield?

• Mixing EtONa with Me₃CCl

• Mixing Me₃CONa with EtCl

• Heating a mixture of (1:1) EtOH and Me₃COH in the presence of conc. H₂SO₄

• Treatment of Me₃COH with EtMgI

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

• CH₃CH₂CH₂CH₂CHO

• CH₃CH₂COCH₂CH₃

• CH₃CH₂CH₂CH₂CH₂OH

• CH₃CH₂CH₂CH₂(OH)CH₃

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

• only CH₃COOCH₂CH₃

• A mi xture of CH₃COOH and EtOH

• only CH₃COOH

• only EtOH

Which one of the following properties is exhibited by phenol?

• It is soluble in aq. NaOH and evolves CO₂ with aq. NaHCO₃,

• It is soluble in aq. NaOH and does not evolve CO₂ with aq. NaHCO₃

• It is not soluble in aq. NaOH but evolves CO₂ with aq. NaHCO₃

• It is insoluble in aq. NaOH and does not evolve CO₂ with aq. NaHCO₃

The basicity of aniline is weaker in comparison to that of methyl amine due to

• hyperconjugative effect of Me-group in MeNH₂

• resonance effect of phenyl group in aniline

• lower molecular weight of methyl amine as compared to that of aniline

• resonance effect of - NH₂ group in MeNH₂

Identify the method by which Me₃CCO₂H can be prepared.

• Treating 1 mole of MeCOMe with 2 moles of MeMgI

• Treating 1 mole of MeCO₂Me with 3 moles of MeMgI

• Treating 1 mole of MeCHO with 3 moles of MeMgI

• Treating 1 mole of dry ice with 1 mol of Me₃CMgI

The most contributing tautomeric enol form of MeCOCH₂CO₂ Et is 

• ${\mathrm{CH}}_2=\mathrm{C}\left(\mathrm{OH}\right){\mathrm{CH}}_2{\mathrm{CO}}_2\mathrm{Et}$

• $\mathrm{MeC}\left(\mathrm{OH}\right)={\mathrm{CHCO}}_2\mathrm{Et}$

• $\mathrm{MeCOCH}=\mathrm{C}\left(\mathrm{OH}\right)\mathrm{OEt}$

• ${\mathrm{CH}}_2=\mathrm{C}\left(\mathrm{OH}\right)\mathrm{CH}=\mathrm{C}\left(\mathrm{OH}\right)\mathrm{OEt}$

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