The magnetic moment of an iron bar is \(M.\) It is now bent in such a way that it forms an arc section of a circle subtending an angle of \(60^\circ\) at the centre. The magnetic moment of this arc section is:
| 1. | \(\dfrac{3 M}{\pi}\) | 2. | \(\dfrac{4M}{\pi}\) |
| 3. | \(\dfrac{ M}{\pi}\) | 4. | \(\dfrac{2 M}{\pi}\) |
Subtopic: Bar Magnet |
77%
Level 2: 60%+
NEET - 2024
Hints
The given circuit shows a uniform straight wire \(AB\) of \(40 ~\text{cm}\) length fixed at both ends. In order to get zero reading in the galvanometer \(G,\) the free end of \(J\) is to be placed from the end \(B\) at:
| 1. | \(32~\text{cm}\) | 2. | \(8~\text{cm}\) |
| 3. | \(16~\text{cm}\) | 4. | \(24~\text{cm}\) |
Subtopic: Wheatstone Bridge |
67%
Level 2: 60%+
NEET - 2024
Hints
According to the law of equipartition of energy, the number of vibrational modes of a polyatomic gas of constant \(\gamma=\dfrac{C_{\mathrm{p}}}{C_{\mathrm{v}}}\) is (where \(C_p\) and \(C_v\) are the specific heat capacities of the gas at constant pressure and constant volume, respectively):
| 1. | \(\dfrac{4+3\gamma}{\gamma-1}\) | 2. | \(\dfrac{3+4\gamma}{\gamma-1}\) |
| 3. | \(\dfrac{4-3\gamma}{\gamma-1}\) | 4. | \(\dfrac{3-4\gamma}{\gamma-1}\) |
Subtopic: Law of Equipartition of Energy |
Level 3: 35%-60%
NEET - 2024
Hints
The output \(Y\) for the inputs \(A\) and \(B\) of the given logic circuit is:
| 1. | \(A\cdot B\) | 2. | \(\overline{A}\cdot\overline{B}\) |
| 3. | \(A+B\) | 4. | \(\overline{A}+\overline{B}\) |
Subtopic: Logic gates |
70%
Level 2: 60%+
NEET - 2024
Hints
The steady-state current in the circuit shown below is:
| 1. | \(0.67~\text A\) | 2. | \(1.5~\text A\) |
| 3. | \(2~\text A\) | 4. | \(1~\text A\) |
Subtopic: Derivation of Ohm's Law |
72%
Level 2: 60%+
NEET - 2024
Hints
The correct decreasing order of atomic radii (pm) of Li, Be, B and C is:
1. Be > Li > B > C
2. Li > Be > B > C
3. C > B > Be > Li
4. Li > C > Be > B
1. Be > Li > B > C
2. Li > Be > B > C
3. C > B > Be > Li
4. Li > C > Be > B
Subtopic: Atomic Size |
81%
Level 1: 80%+
NEET - 2024
Hints
The following data is for a reaction between reactants A and B:
The order of the reaction with respect to A and B, respectively are:
| Rate mol \(L^{-1}s^{-1}\) |
[A] | [B] |
| \(2 \times10^{-3}\) | 0.1 M | 0.1 M |
| \(4 \times10^{-3}\) | 0.2 M | 0.1 M |
| \(1.6 \times10^{-2}\) | 0.2 M | 0.2 M |
| 1. | 1, 0 | 2. | 0, 1 |
| 3. | 1, 2 | 4. | 2, 1 |
Subtopic: Order, Molecularity and Mechanism |
81%
Level 1: 80%+
NEET - 2024
Hints
Baeyer's reagent is:
| 1. | Acidic potassium permanganate solution |
| 2. | Acidic potassium dichromate solution |
| 3. | Cold, dilute, aqueous solution of potassium permanganate |
| 4. | Hot, concentrated solution of potassium permanganate |
Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |
81%
Level 1: 80%+
NEET - 2024
Hints
Which of the following molecules has "non-zero" dipole moment value?
| 1. | \(\mathrm{CCl_4}\) | 2. | \(\mathrm{HI}\) |
| 3. | \(\mathrm{CO_2}\) | 4. | \(\mathrm{BF}_3\) |
Subtopic: Polarity |
77%
Level 2: 60%+
NEET - 2024
Hints
Subtopic: Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions |
68%
Level 2: 60%+
NEET - 2024
Hints
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