Q. No.
| (A) | 4LiH + AlCl3 → 3LiCl + LiAlH4 |
| (B) | N2O3 + 3H2O → 2H3O+ + 2NO2- |
| (C) | NH4NO3 → 2H2O + N2O |
2. A, B and C
3. A and C only
4. A and B only
In an electrochemical cell, the half-cell reactions with their respective oxidation potentials are:
\(\begin{aligned} &C u(s) \rightarrow C u^{2+}+2 e^{-} ; E^{\circ}=-0.34 V \\ &N i (s) \rightarrow N i^{2+}+2 e^{-} ; E^{\circ}=+0.25 V \end{aligned} \)
The reaction, among the following, that will be spontaneous is:
1. 2Ni(s) + Cu2+(aq) → Ni2+(aq) + 2Cu(s)
2. Ni2+(aq) + Cu(s) → Ni(s) + Cu2+(aq)
3. 2Cu(s) + Ni2+(aq) → 3Cu+(aq) + Ni(s)
4. Ni(s) + Cu2+(aq) → Ni2+(aq) + Cu(s)
\(\mathrm{Cl}_2 \mathrm{O}_7+\mathrm{H}_2 \mathrm{O}_{2} \rightarrow \)
| 1. | +1 | 2. | +2 |
| 3. | +3 | 4. | +5 |
\( \mathrm{Zn}_{(s)} + \mathrm{2HCl}_{(aq)} \rightarrow \mathrm{ZnCl_2}_{(aq)}+\mathrm {H_2} _{(g)}\)
1. Four (4)
2. Three (3)
3. Two (2)
4. One (1)
The oxidation number of sulfur in \(H_2SO_4\) is +6, and in \(H_2S_2O_8\), it is also +6. When \(H_2SO_4\) is converted into \(H_2S_2O_8\), what type of process occurs during this conversion?
1. Oxidation
2. Reduction
3. Neither oxidation nor reduction
4. Oxidation as well as reduction
What is the number of moles of K2Cr2O7 required to oxidise 1 mole of ferrous oxalate in an acidic medium?
| 1. | \(1 \over 2\) | 2. | \(1 \over 3\) |
| 3. | \(1\over 6\) | 4. | 2 |
1. +3, +4, and +6
2. +3, +2, and +4
3. +3, 0, and +6
4. +3, 0, and +4
Consider the given reaction:
\(\mathrm{Al}+\mathrm{Fe}_3 \mathrm{O}_4 \rightarrow \mathrm{Al}_2 \mathrm{O}_3+\mathrm{Fe}\)
What is the total number of electrons transferred in the given reaction?
1. 6
2. 8
3. 8/3
4. 24
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