For the cell reaction, 

2Ce⁴⁺ + Co → 2Ce³⁺ + Co³⁺; E${}_{\mathrm{cell}}^{°}$ is 1.89 V. If ${\mathrm{E}}_{{\mathrm{Co}}^{2+}/ \mathrm{Co}}$ is -0.28V, what is the value of ${\mathrm{E}}_{{\mathrm{Ce}}^{4+} / {\mathrm{Ce}}^{3+}}^{°}$?

• 0.28 V

• 1.61 V

• 2.17 V

• 5.29 V

The equivalent conductance of silver nitrate solution at 250°C for an infinite dilution was found to be 133.3 $\mathrm{\Omega }$^-1 cm² equiv^-1. The transport number of Ag⁺ ions in very dilute solution of AgNO₃ is 0.464. Equivalent conductances of Ag⁺ and NO₃^- (in Ω^-1 cm² equiv^-1) at infinite dilution are respectively.

• 195.2; 133.3

• 61.9; 71.4

• 71.4; 61.9

• 133.3; 195.2

Treating anisole with the following reagents, the major product obtained is 

I. (CH₃)₃CCl, AlCl₃

II. Cl₂, FeCl₃

III. HBr, Heat

Ketones [R - $\underset{\mathrm{O}}{\underset{\left|\right|}{\mathrm{C}}}$ - R'] where, R = R' = alkyl group can be obtained in one step by

• hydrolysis of esters

• oxidation of primary alcohols

• oxidation of secondary alcohols

• reaction of acid halide with alcohols

An optically active compound 'X' has molecular formula C₄H₈O₃. It evolves CO₂ with aqueous NaHCO₃. 'X' reacts with LiAlH₄ to give an achiral compound. 'X' is

• CH₃CH₂C(OH)HCOOH

• CH₃C(OMe)HCOOH

• CH₃CH(CH₂OH)HCOOH

• CH₃C(OH)HCH₂COOH

Product is/ are

• 

• 

• Both (a) and (b)

• None is correct

Glycerol $\stackrel{{\mathrm{KHSO}}_4}{\to }$ A $\stackrel{\mathrm{HClO}}{\to }$ B

A and B respectively are

• CH₂=CH$\stackrel{\mathrm{O}}{\stackrel{\left|\right|}{\mathrm{C}}}\mathrm{H}$ ; $\underset{\mathrm{Cl}}{\underset{|}{\mathrm{C}}}$H₂-C(OH)HCOH

• CH₂=CHCOH; C(OH)H₂-C(Cl)HOCH

• CH₃CH₂CHO; CH₃CH₂CH(OH)(Cl)

• CH₂=CHCOH; C(Cl)OH₂CH₂CHO

Phenol is heated with phthanlic anhydride in the presence of conc. H₂SO₄. The product gives pink colour with alkali. The product is

• phenolphthalein

• bakelite

• salicylic acid

• flurorescein

29.

C₆H₅NH₂ $\underset{0°\mathrm{C}}{\overset{{\mathrm{NaNO}}_2/ \mathrm{HCl}}{\to }}$ X $\stackrel{\mathrm{CuCN}}{\to }$ Y $\stackrel{{\mathrm{H}}_2\mathrm{O}/ {\mathrm{H}}^{+}}{\to }$ Z, Z i identified as

• C₆H₅-NH-CH₃

• C₆H₅-CH₂-NH₂

• C₆H₅-CH₂-COOH

• C₆H₅-COOH

Out of H₂S₂O₃, H₂S₂O₄, H₂SO₅ and H₂S₂O₈ peroxy acids are

• H₂S₂O₃; H₂S₂O₈

• H₂SO₅; H₂S₂O₈

• H₂S₂O₄; H₂SO₅

• H₂S₂O₃; H₂S₂O₄