| 1. | 40 mol | 2. | 10 mol |
| 3. | 20 mol | 4. | 30 mol |
Disproportionation reactions are:
| (a) | |
| (b) | |
| (c) | |
| (d) |
| 1. | (a) and (d) only | 2. | (a) and (b) only |
| 3. | (a), (b) and (c) | 4. | (a), (c) and (d) |
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. | \(- \frac{d \left[N_{2}\right]}{dt} = \frac{1}{2} \frac{d [NH_{3}]}{dt}\) |
1. H3O+ and H2F+, respectively.
2. OH– and H2F+, respectively.
3. H3O+ and F–, respectively.
4. OH– and F–, respectively.
Then the amplitude of its oscillation is given by:
1. \(A + B\)
2. \(A_{0}+\sqrt{A^{2} + B^{2}} \)
3. \(\sqrt{A^{2} + B^{2}}\)
4. \(\sqrt{A_{0}^{2}+\left( A + B \right)^{2}}\)
In which of the following devices, the eddy current effect is not used?
1. Electric heater
2. Induction furnace
3. Magnetic braking in train
4. Electromagnet
The average velocity of a particle executing SHM in one complete vibration is:
1. zero
2. \(\dfrac{A \omega}{2}\)
3. \(A \omega\)
4. \(\dfrac{A \left(\omega\right)^{2}}{2}\)
The speed of a swimmer in still water is \(20~\text{m/s}.\) The speed of river water is \(10~\text{m/s}\) and is flowing due east. If he is standing on the south bank and wishes to cross the river along the shortest path, the angle at which he should make his strokes with respect to the north is given by:
| 1. | \(45^{\circ}\) west of north | 2. | \(30^{\circ}\) west of north |
| 3. | \(0^{\circ}\) west of north | 4. | \(60^{\circ}\) west of north |
In the circuits shown below, the readings of the voltmeters and the ammeters will be:
| 1. | \(V_2>V_1~\text{and}~i_1= i_2\) | 2. | \(V_2=V_1~\text{and}~i_1> i_2\) |
| 3. | \(V_2=V_1~\text{and}~i_1= i_2\) | 4. | \(V_2>V_1~\text{and}~i_1> i_2\) |
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