Consider the given reaction:
\(\mathrm{PCl}_5=\mathrm{PCl}_3+\mathrm{Cl}_2\)
At equilibrium at \(500 \mathrm{~K},\) the concentration of \(\mathrm{PCl}_5=1.40~ \mathrm{M} \text {, }\) concentration of \(\mathrm{Cl}_2=1.60~ \mathrm{M} \text {, }\) concentration of \(\mathrm{PCl}_3=1.60 \mathrm{M}\). Calculate \(K_c\):
1. 2.00
2. 2.6
3. 1.83
4. 3.4
Subtopic: Kp, Kc & Factors Affecting them |
89%
Level 1: 80%+
NEET - 2024
Hints
Which input \((A,B)-\)output \((Y)\) combination correctly represents the given logic circuit?
| 1. | \(A=1,B=1,Y=1\) |
| 2. | \(A=0,B=1,Y=1\) |
| 3. | \(A=1,B=0,Y=0\) |
| 4. | \(A=0,B=0,Y=1\) |
Subtopic: Logic gates |
59%
Level 3: 35%-60%
NEET - 2024
Hints
A wire of length \(L\) and radius \(r(r\ll L)\) 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:
(the surface tension of liquid is \(T\))
(the surface tension of liquid is \(T\))
| 1. | \(\sqrt { \dfrac{T}{\rho g}}\) | 2. | \(\sqrt { \dfrac{2T}{\rho g}}\) |
| 3. | \(\sqrt{\dfrac{2T\rho}{\pi g}}\) | 4. | \(\sqrt{\dfrac{2T} {\pi \rho g}}\) |
Subtopic: Surface Tension |
61%
Level 2: 60%+
NEET - 2024
Hints
A rocket is fired vertically upward with a speed of \(\dfrac{v_e}{\sqrt2}\) 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, the radius of Earth \(=6400~\text{km}\) )
1. \(1600~\text{km}\)
2. \(3200~\text{km}\)
3. \(6400~\text{km}\)
4. \(12800~\text{km}\)
(given, the radius of Earth \(=6400~\text{km}\) )
1. \(1600~\text{km}\)
2. \(3200~\text{km}\)
3. \(6400~\text{km}\)
4. \(12800~\text{km}\)
Subtopic: Escape velocity |
66%
Level 2: 60%+
NEET - 2024
Hints
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: Aromatic Hydrocarbons - Nomenclature, Isomerism & Huckel's Rule |
82%
Level 1: 80%+
NEET - 2024
Hints
Match List-I with List-II (the symbols carry their usual meaning).
Choose the correct answer from the options given below:
| List-I | List-II | ||
| \(\mathrm{(A)}\) | \( \oint \vec{E} \cdot d \vec{A}=\dfrac{Q}{\varepsilon_0}\) | \(\mathrm{(I)}\) | Ampere-Maxwell's law |
| \(\mathrm{(B)}\) | \( \oint \vec{B} \cdot d \vec{A}=0 \) | \(\mathrm{(II)}\) | Faraday's law |
| \(\mathrm{(C)}\) | \( \oint \vec{E} \cdot d\vec{ l}=\dfrac{-d(\phi)}{d t} \) | \(\mathrm{(III)}\) | Gauss's law of electrostatics |
| \(\mathrm{(D)}\) | \( \oint \vec{B} \cdot d\vec{l}=\mu_0 i_c+ \mu_0 \varepsilon_0 \dfrac{d\left(\phi_E\right)}{d t}\) | \(\mathrm{(IV)}\) | Gauss's law of magnetism |
Choose the correct answer from the options given below:
| 1. | \(\mathrm{A-III, B-IV, C-II, D-I} \) |
| 2. | \(\mathrm{A-IV, B-III, C-II, D-I} \) |
| 3. | \(\mathrm{A-III, B-II, C-IV, D-I} \) |
| 4. | \(\mathrm{A-IV, B-I, C-III, D-II} \) |
Subtopic: Maxwell's Equations |
83%
Level 1: 80%+
NEET - 2024
Hints
Match List-I with List-II
Choose the correct answer from the options given below:
| 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. | 3-carbon molecule, phosphoenol pyruvate |
| 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 |
79%
Level 2: 60%+
NEET - 2024
Hints
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. | \(50\%\) |
Subtopic: Ideal Gas Equation |
71%
Level 2: 60%+
NEET - 2024
Hints
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:
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 |
80%
Level 1: 80%+
NEET - 2024
Hints
Match List- I with List- II.
Choose the correct answer from the options given below:
| List-I (Measured values) |
List-II (Significant figures) |
||
| \(\mathrm{(A)}\) | \(0.001213\) | \(\mathrm{(I)}\) | \(2\) |
| \(\mathrm{(B)}\) | \(2.1 \times 10^{16} \) | \(\mathrm{(II)}\) | \(3\) |
| \(\mathrm{(C)}\) | \(3.70\) | \(\mathrm{(III)}\) | \(1\) |
| \(\mathrm{(D)}\) | \(3000\) | \(\mathrm{(IV)}\) | \(4\) |
| 1. | \(\mathrm{A-III, B-II, C-I, D-IV}\) | 2. | \(\mathrm{A-III, B-I, C-II, D-IV}\) |
| 3. | \(\mathrm{A-I, B-II, C-IV, D-III}\) | 4. | \(\mathrm{A-IV, B-I, C-II, D-III}\) |
Subtopic: Significant Figures |
86%
Level 1: 80%+
NEET - 2024
Hints
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