A wire of length \(L\) and radius \(r(r<<L)\) is kept floating on the surface of a liquid of density \(\rho\). The maximum radius of the wire for which it may not sink is (Surface tension of liquid is \(T\)):
1. \(\sqrt { \frac{T}{\rho g}}\)
2. \(\sqrt { \frac{2T}{\rho g}}\)
3. \(\sqrt{\frac{2T\rho}{\pi g}}\)
4. \(\sqrt{\frac{2T} {\pi \rho g}}\)
Subtopic: Surface Tension |
53%
From NCERT
NEET - 2024
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A rocket is fired vertically upward with a speed of \(\large\frac{v_e}{\sqrt2}\) from the earth's surface, where \(v_e\) is escape velocity on the surface of earth. The distance from the surface of earth upto which the rocket can go before returning to the earth is (Given radius of earth \(=6400~\text{km}\) ) :
1. \(1600~\text{km}\)
2. \(3200~\text{km}\)
3. \(6400~\text{km}\)
4. \(12800~\text{km}\)
1. \(1600~\text{km}\)
2. \(3200~\text{km}\)
3. \(6400~\text{km}\)
4. \(12800~\text{km}\)
Subtopic: Escape velocity |
62%
From NCERT
NEET - 2024
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Phenanthrene is an aromatic compound and follows Huckel's \((4 n+2) \pi\) electron rule. The value of \(n\) is:
1. 0
2. 1
3. 2
4. 3
1. 0
2. 1
3. 2
4. 3
Subtopic: Aromaticity & Polarity |
80%
From NCERT
NEET - 2024
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Match List-I with List-II (The symbols carry their usual meaning)
Choose the correct answer from the options given below:
1. A-III, B-IV, C-II, D-I
2. A-IV, B-III, C-II, D-I
3. A-III, B-II,C-IV,D-I
4. A-IV, B-I,C-III, D-II
| List I | List II | ||
| A | \( \oint \vec{E} \cdot d \vec{A}=\frac{Q}{\varepsilon_0}\) | I | Ampere-Maxwell's Law |
| B | \( \oint \vec{B} \cdot d \vec{A}=0 \) | II | Faraday's Law |
| C | \( \oint \vec{E} \cdot \overrightarrow{d I}=\frac{-d(\phi)}{d t} \) | III | Gauss Law of electrostatics |
| D | \( \oint \vec{B} \cdot \overrightarrow{d l}=\mu_0 i_c+ \mu_0 \varepsilon_0 \frac{d\left(\phi_E\right)}{d t}\) | IV | Gauss law of magnetism |
1. A-III, B-IV, C-II, D-I
2. A-IV, B-III, C-II, D-I
3. A-III, B-II,C-IV,D-I
4. A-IV, B-I,C-III, D-II
Subtopic: Maxwell's Equations |
77%
From NCERT
NEET - 2024
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Match List-I with List-II
Choose the correct answer from the options given below :
1. A-II, B-I, C-IV, D-III
2. A-IV, B-II, C-I, D-III
3. A-III, B-I, C-IV, D-II
4. A-III, B-IV, C-II, D-I
| List-I | List-II | ||
| A | C4 Pathway | I. | \(2\text{H}_2\text{O}\rightarrow4\text{H}^++\text{O}_2=4\text{e}^-\) |
| B. | Light reaction | II. | Ribulose 1,5-bisphosphate |
| C. | Photorespiration | III. | -carbon molecule phosphoenol |
| D. | Calvin cycle | IV. | Phosphoglycolate |
1. A-II, B-I, C-IV, D-III
2. A-IV, B-II, C-I, D-III
3. A-III, B-I, C-IV, D-II
4. A-III, B-IV, C-II, D-I
Subtopic: Photosystems | Dark Reaction : Calvin Cycle | C4 Cycle (Hatch & Slack Pathway) | Photorespiration |
82%
From NCERT
NEET - 2024
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An ideal gas at \(0^{\circ}\text{C}\) and atmospheric pressure \(P\) has volume \(V.\) The percentage increase in its temperature needed to expand it to \(3V\) at constant pressure is:
1. \(100\%\)
2. \(200\%\)
3. \(300\%\)
4. \(50\%\)
1. \(100\%\)
2. \(200\%\)
3. \(300\%\)
4. \(50\%\)
Subtopic: Ideal Gas Equation |
71%
From NCERT
NEET - 2024
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Arrange the following hydrides in the order of decreasing bond angle:
A. \( \mathrm{SbH}_3 \)
B. \( \mathrm{AsH}_3 \)
C. \(\mathrm{PH}_3 \)
D. \( \mathrm{NH}_3\)
Choose the correct answer from the options given below:
1. B > A > D > C
2. B > A > C > D
3. D > C > B > A
4. A > C > B > D
A. \( \mathrm{SbH}_3 \)
B. \( \mathrm{AsH}_3 \)
C. \(\mathrm{PH}_3 \)
D. \( \mathrm{NH}_3\)
Choose the correct answer from the options given below:
1. B > A > D > C
2. B > A > C > D
3. D > C > B > A
4. A > C > B > D
Subtopic: V.S.E.P.R & V.B.T |
79%
From NCERT
NEET - 2024
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Match List- I with List- II.
Choose the correct answer from the options given below:
| List-I (Measured values) |
List-II (Significant figures) |
||
| A | \(0.001213\) | I | \(2\) |
| B | \(2.1 \times 10^{16} \) | II | \(3\) |
| C | \(3.70\) | III | \(1\) |
| D | \(3000\) | IV | \(4\) |
| 1. | A-III, B-II, C-I, D-IV |
| 2. | A-III, B-I, CII, D-IV |
| 3. | A-I, B-II, C-IV, D-III |
| 4. | A-IV, B-I, C-II, D-III |
Subtopic: Significant Figures |
87%
From NCERT
NEET - 2024
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Match List-I with List-II
Choose the correct answer from the options given below:
1. A-I, B-III, C-IV, D-II
2. A-II, B-III, C-IV, D-I
3. A-IV, B-III, C-II, D-I
4. A-I, B-II, C-IV, D-III
| List-I | List-II | ||
| A. | Emphysema | I. | Proliferation of fibrous tissues |
| B. | Asbestosis | II. | Alveolar walls are damaged and respiratory surface is decreased |
| C. | Asthma | III. | Serious lung damage |
| D. | Fibrosis | IV. | Difficulty in breathing due to inflammation of bronchi and bronchioles |
Choose the correct answer from the options given below:
1. A-I, B-III, C-IV, D-II
2. A-II, B-III, C-IV, D-I
3. A-IV, B-III, C-II, D-I
4. A-I, B-II, C-IV, D-III
Subtopic: Respiratory Disorders: Part 1 | Respiratory Disorders: Part 2 | Respiratory Disorders - III |
89%
NEET - 2024
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Cell wall formation in bacteria is facilitated by :
1. Ribosomes
2. Mesosomes
3. Golgi Apparatus
4. Centrosomes
1. Ribosomes
2. Mesosomes
3. Golgi Apparatus
4. Centrosomes
Subtopic: Prokaryotic Cell Organisation | Details of Prokaryotic Cell Structure |
86%
From NCERT
NEET - 2024
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