JEE Advanced 2013 · Paper 1

The compound that does NOT liberate CO₂, on treatment with aqueous sodium bicarbonate solution, is

1. ABenzoic acid
2. BBenzenesulphonic acid
3. CSalicylic acid
4. DCarbolic acid (Phenol)

Concentrated nitric acid, upon long standing, turns yellow-brown due to the formation of

1. ANO
2. BNO₂
3. CN₂O
4. DN₂O₄

Methylene blue, from its aqueous solution, is adsorbed on activated charcoal at 25 °C. For this process, the correct statement is

1. AThe adsorption requires activation at 25 °C.
2. BThe adsorption is accompanied by a decrease in enthalpy.
3. CThe adsorption increases with increase of temperature.
4. DThe adsorption is irreversible.

Sulfide ores are common for the metals

1. AAg, Cu and Pb
2. BAg, Cu and Sn
3. CAg, Mg and Pb
4. DAl, Cu and Pb

Upon treatment with ammoniacal H₂S, the metal ion that precipitates as a sulfide is

1. AFe(III)
2. BAl(III)
3. CMg(II)
4. DZn(II)

The standard enthalpies of formation of CO₂(g), H₂O(l) and glucose(s) at 25 °C are −400 kJ/mol, −300 kJ/mol and −1300 kJ/mol, respectively. The standard enthalpy of combustion per gram of glucose at 25 °C is

1. A+2900 kJ
2. B−2900 kJ
3. C−16.11 kJ
4. D+16.11 kJ

Consider the following complex ions, P, Q and R. P = [FeF₆]³⁻, Q = [V(H₂O)₆]²⁺ and R = [Fe(H₂O)₆]²⁺. The correct order of the complex ions, according to their spin-only magnetic moment values (in B.M.) is

1. AR < Q < P
2. BQ < R < P
3. CR < P < Q
4. DQ < P < R

The pair(s) of coordination complexes/ions exhibiting the same kind of isomerism is(are)

1. A[Cr(NH₃)₅Cl]Cl₂ and [Cr(NH₃)₄Cl₂]Cl
2. B[Co(NH₃)₄Cl₂]⁺ and [Pt(NH₃)₂(H₂O)Cl]⁺
3. C[CoBr₂Cl₂]²⁻ and [PtBr₂Cl₂]²⁻
4. D[Pt(NH₃)₃(NO₃)]Cl and [Pt(NH₃)₃Cl]Br