The resistance of platinum wire at \(0^{\circ} \text{C}\) is \(2~ \Omega\) and \(6.8~ \Omega\) at \(80^{\circ}\text{C}\). The temperature coefficient of resistance of the wire is:
1.
\((3\times 10^{-1})^\circ \text{C}^{-1}\)
2.
\((3 \times 10^{-4})^\circ \text{C}^{-1}\)
3.
\((3 \times 10^{-3})^\circ \text{C}^{-1}\)
4.
\((3 \times 10^{-2})^\circ \text{C}^{-1}\)
Subtopic: Derivation of Ohm's Law |
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The net impedance of circuit (as shown in the figure) will be:
1. \(25~\Omega\)
2. \(10\sqrt{2}~\Omega\)
3. \(15~\Omega\)
4. \(5\sqrt{5}~\Omega\)
1. \(25~\Omega\)
2. \(10\sqrt{2}~\Omega\)
3. \(15~\Omega\)
4. \(5\sqrt{5}~\Omega\)
Subtopic: Different Types of AC Circuits |
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Calculate the maximum acceleration of a moving car so that a body lying on the floor of the car remains stationary. The coefficient of static friction between the body and the floor is \(0.15\). (take \(g=10\) ms-2)
| 1. | \(50\) ms-2 | 2. | \(1.2\) ms-2 |
| 3. | \(150\) ms-2 | 4. | \(1.5\) ms-2 |
Subtopic: Friction |
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NEET - 2023
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For the following logic gate, the truth table is:
| 1. |
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| 2. |
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| 3. |
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| 4. |
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Subtopic: Logic gates |
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NEET - 2023
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The \(x\text-t\) graph of a particle performing simple harmonic motion is shown in the figure. The acceleration of the particle at \(t=2\) s is:
1. \(-\frac{\pi^2}{16} ~\text{ms}^{-2}\)
2. \(\frac{\pi^2}{8}~ \text{ms}^{-2}\)
3. \(-\frac{\pi^2}{8} ~\text{ms}^{-2}\)
4. \(\frac{\pi^2}{16} ~\text{ms}^{-2}\)
1. \(-\frac{\pi^2}{16} ~\text{ms}^{-2}\)
2. \(\frac{\pi^2}{8}~ \text{ms}^{-2}\)
3. \(-\frac{\pi^2}{8} ~\text{ms}^{-2}\)
4. \(\frac{\pi^2}{16} ~\text{ms}^{-2}\)
Subtopic: Simple Harmonic Motion |
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NEET - 2023
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The mass of CO2 produced by heating 20 g of 20% pure limestone as per the given below equation is:
\(\left[\mathrm{CaCO}_3 \stackrel{1200 \mathrm{~K}}{\longrightarrow} \mathrm{CaO}+\mathrm{CO}_2\right] \)
\(\left[\mathrm{CaCO}_3 \stackrel{1200 \mathrm{~K}}{\longrightarrow} \mathrm{CaO}+\mathrm{CO}_2\right] \)
| 1. | 1.32 g | 2. | 1.12 g |
| 3. | 1.76 g | 4. | 2.64 g |
Subtopic: Equation Based Problem |
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NEET - 2023
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Some tranquilizers are listed below. Which one from the following belongs to barbiturates?
| 1. | Veronal | 2. | Chlordiazepoxide |
| 3. | Meprobamate | 4. | Valium |
Subtopic: Classification of Medicines |
From NCERT
NEET - 2023
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Given below are two statements: one is labeled as Assertion (A) and the other is labeled as Reason (R):
In light of the above statements, choose the correct answer from the options given below:
| Assertion (A): | Helium is used to dilute oxygen in the diving apparatus. |
| Reason (R): | Helium has a high solubility in O2. |
| 1. | (A) is False but (R) is True. |
| 2. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 3. | Both (A) and (R) are True and (R) is not the correct explanation of (A). |
| 4. | (A) is True but (R) is False. |
Subtopic: Concentration Terms & Henry's Law |
From NCERT
NEET - 2023
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
In the light of the above statements choose the correct answer from the options given below:
| Assertion (A): | Metallic sodium dissolves in liquid ammonia giving a deep blue solution, which is paramagnetic. |
| Reason (R): | The deep blue solution is due to the formation of amide. |
| 1. | (A) is false but (R) is true. |
| 2. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 3. | Both (A) and (R) are true and R is NOT the correct explanation of (A). |
| 4. | (A) is true but (R) is false. |
Subtopic: Reasoning Questions |
From NCERT
NEET - 2023
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The correct order of energies of molecular orbitals of N2 molecule is:
| 1. | \( \sigma \text { 1s }<\sigma^* \text { 1s }<\sigma 2 s<\) \(\sigma^* 2 s<\left(\pi 2 p_x=\pi 2 p_y\right)<\) \(\left(\pi^* 2 p_x=\pi^* 2 p_y\right)<\sigma 2 p_z<\sigma^* 2 p_z\) |
| 2. | \( \sigma \text { 1s }<\sigma^* \text { 1s }<\sigma 2 s<\sigma^* 2 s<\) \(\left(\pi 2 p_x=\pi 2 p_y\right)< \) \(\sigma 2 p_z<\left(\pi^* 2 p_x=\pi^* 2 p_y\right)<\sigma^* 2 p_z \) |
| 3. | \( \sigma \text { 1s }<\sigma^* \text { 1s }<\sigma 2 s<\sigma^* 2 s<\sigma 2 p_z<\) \( \left(\pi 2 p_x=\pi 2 p_y\right)<\) \(\left(\pi^* 2 p_x=\pi^* 2 p_y\right)<\sigma^* 2 p_z \) |
| 4. | \( \sigma \text { 1s }<\sigma^* \text { 1s }\) \(<\sigma 2 s<\sigma^* 2 s<\sigma 2 p_z< \) \( \sigma^* 2 p_z<\left(\pi 2 p_x=\pi 2 p_y\right)<\) \(\left(\pi^* 2 p_x=\pi^* 2 p_y\right) \) |
Subtopic: M.O.T |
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