Given the following cell reaction:
\(\mathrm{2Fe^{3+}(aq) \ + \ 2I^{-}(aq)\rightarrow 2Fe^{2+}(aq) \ + \ I_{2}(aq)}\)
The standard Gibbs energy ∆rG⊝ of the cell reaction is:
[Given: \(F = 96500\) \(C\) \(mol^{- 1}\)]
1. \(23 . 16\) \(kJ\) \(mol^{- 1}\)
2. \(- 46 . 32\) \(kJ\) \(mol^{- 1}\)
3. \(- 23 . 16\) \(kJ\) \(mol^{- 1}\)
4. \(46 . 32\) \(kJ\) \(mol^{- 1}\)
Which of the following series of transitions in the spectrum of hydrogen atoms falls in the visible region?
1. Brackett series
2. Lyman series
3. Balmer series
4. Paschen series
For the chemical reaction ) the correct option is:
| 1. | \(3\frac {d[H_2]} {dt} = 2 \frac {d[NH_3]} {dt} \) | 2. | \(-\frac {1} {3}\frac {d[H_2]} {dt} = -\frac {1} {2} \frac {d[NH_3]} {dt} \) |
| 3. | \(- \frac{d \left[N_{2}\right]}{dt} = 2 \frac{d [NH_{3}]}{dt}\) | 4. | \(- \frac{d \left[N_{2}\right]}{dt} = \frac{1}{2} \frac{d [NH_{3}]}{dt}\) |
?
When hydrolyzed with aqueous KOH, compounds that undergoes racemization are:
| (i) |  |
(ii) | CH3CH2CH2Cl |
| (iii) |  |
(iv) |  |
| 1. | (i) and (ii) | 2. | (ii) and (iv) |
| 3. | (iv) only | 4. | (i) and (iv) |
If the rate constant for a first order reaction is k, the time (t) required for the completion of 99% of the reaction is given by:
1. t = 2.303/k
2. t = 0.693/k
3. t = 6.909/k
4. t = 4.606/k
An alkene "A" on reaction with and gives propanone and ethanal in equimolar ratio. The addition of HCl to alkene "A" gives "B" as the major product. The structure of product "B" is:
| 1. |  |
2. |  |
| 3. |  |
4. |  |
The manganate and permanganate ions are tetrahedral, due to:
| 1. | The π-bonding involves the overlap of d-orbitals of oxygen with d-orbitals of manganese. |
| 2. | The π-bonding involves the overlap of p-orbitals of oxygen with d-orbitals of manganese. |
| 3. | Absence of π-bonding. |
| 4. | The π-bonding involves the overlap of p-orbitals of oxygen with p-orbitals of manganese. |
Under the isothermal condition, a gas at \(300 \mathrm{~K}\) expands from \(0.1 \mathrm{~L}\) to \(0.25 \mathrm{~L}\) against a constant external pressure of 2 bar. The work done by the gas is:
| 1. | \(30 ~\mathrm {J} \) | 2. | \(-30 ~\mathrm{J} \) |
| 3. | \(5~ \mathrm{kJ}\) | 4. | \(25~ \mathrm{J}\) |
Match the name of process given in Column-I with the name of compound given in Column-II and mark the correct option.
| Column-I | Column-II | ||
| (a) | Pure nitrogen | (i) | Chlorine |
| (b) | Haber process | (ii) | Sulphuric acid |
| (c) | Contact process | (iii) | Ammonia |
| (d) | Deacon's process | (iv) | Sodium azide or Barium azide |
| (a) | (b) | (c) | (d) | |
| 1. | (iv) | (iii) | (ii) | (i) |
| 2. | (i) | (ii) | (iii) | (iv) |
| 3. | (ii) | (iv) | (i) | (iii) |
| 4. | (iii) | (iv) | (ii) | (i) |
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