Kohlrausch's law states that at:
| 1. | Finite dilution, each ion makes definite contribution to equivalent conductance of an electrolyte, whatever be the nature of the other ion of the electrolyte. |
| 2. | Infinite dilution, each molecule makes definite contribution to equivalent conductance of an electrolyte depending on the nature of the other ion of the electrolyte. |
| 3. | Finite dilution, each molecule makes definite contribution to conductance of an electrolyte whatever be the nature of the other ion of the electrolyte. |
| 4. | Infinite dilution, each ion makes definite contribution to equivalent conductance of an electrolyte, whatever be the nature of the other ion of the electrolyte. |
Which of the following complexes has the highest paramagnetic behaviour?
(where gly = glycine, en = ethylenediamine, ox = oxalate ion and bpy = bipyridyl moieties )
(At no : Ti= 22, V = 23, Fe = 26, Co = 27)
1. [V(gly)2(OH)2(NH3)2]+
2. [Fe(en)(bpy)(NH3)2]2+
3. [Co(ox)2(OH)2]-
4. [Ti(NH3)6]3+
If a gas expands at a constant temperature, it indicates that:
1. Kinetic energy of the molecules decreases
2. The pressure of the gas increases
3. The kinetic energy of the molecules remains the same
4. The number of molecules of gas increases
which of the following conditions is correct?
1. ΔH = 0 and ΔS < 0
2. ΔH > 0 and ΔS > 0
3. ΔH < 0 and ΔS < 0
4. ΔH > 0 and ΔS < 0
In a SN2 substitution reaction of the type
\(\mathrm{R}-\mathrm{Br}+\mathrm{Cl}^{-} \xrightarrow{\mathrm{DMF}} \mathrm{R}-\mathrm{Cl}+\mathrm{Br}^{-}\)
one of the following that has the highest relative rate is:
| 1. | \(\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}_2 \mathrm{Br}\) | 2. |  |
| 3. |  |
4. | \(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{Br}\) |
Number of moles of \(MnO^-_4\) required to oxidise one mole of ferrous oxalate completely in an acidic medium will be:
| 1. | 0.6 mole | 2. | 0.4 mole |
| 3. | 7.5 moles | 4. | 0.2 mole |
If the concentration of OH ' ions in the reaction
decreased by times, then the equilibrium concentration of Fe3+ will increase by:
1. 8 times
2. 16 times
3. 64 times
4. 4 times
| 1. | K+> Na+> Rb+> Cs+ | 2. | Cs+> Rb+> K+> Na+ |
| 3. | Rb+> K+> Cs+> Na+ | 4. | Na+> K+> Rb+> Cs+ |
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