Practice free NEET NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
A parallel plate capacitor is charged by connecting it to a battery through a resistor. If I is the current in the circuit, then in the gap between the plates:
In the gap $I_\text{disp} = \epsilon_0\,d\Phi_E/dt$ equals the conduction current $I$ and points the same way.
An iron bar of length L has magnetic moment M. It is bent at the middle of its length such that the two arms make an angle $60^\circ$ with each other. The magnetic moment of this new magnet is:
Each half $= M/2$. With $60^\circ$ between arms, moment vectors are $120^\circ$ apart. Resultant $= 2(M/2)\cos 60^\circ = M/2$.
The minimum energy required to launch a satellite of mass $m$ from the surface of earth of mass $M$ and radius $R$ in a circular orbit at an altitude of $2R$ from the surface of the earth is:
$E_\text{orbit}(3R) - E_\text{surface} = -GMm/(2\cdot 3R) - (-GMm/R) = 5GMm/(6R)$.
The following graph represents the T-V curves of an ideal gas (where T is the temperature and V the volume) at three pressures $P_1$, $P_2$ and $P_3$ compared with those of Charles's law represented as dotted lines.
Then the correct relation is:
Slope of $T$-$V$ at fixed $P$ $\propto P/nR$ → steeper curve = higher pressure → $P_1 > P_2 > P_3$.
A force defined by $F = \alpha t^2 + \beta t$ acts on a particle at a given time $t$. The factor which is dimensionless, if $\alpha$ and $\beta$ are constants, is:
$[\alpha] = MLT^{-4}$, $[\beta] = MLT^{-3}$, so $\alpha t/\beta$ is dimensionless.
Given below are two statements:
Statement I: Aniline does not undergo Friedel-Crafts alkylation reaction.
Statement II: Aniline cannot be prepared through Gabriel synthesis.
In the light of the above statements, choose the correct answer from the options given below:
AlCl₃ complexes with –NH₂ lone pair, deactivating the ring (Statement I true). Gabriel synthesis gives primary aliphatic amines only — aryl halides do not undergo S$_\text{N}$2 with phthalimide ion (Statement II true).
Match List I with List II.
| List I (Compound) | List II (Shape/geometry) |
|---|---|
| A. NH₃ | I. Trigonal Pyramidal |
| B. BrF₅ | II. Square Planar |
| C. XeF₄ | III. Octahedral |
| D. SF₆ | IV. Square Pyramidal |
Choose the correct answer from the options given below:
NH₃ trigonal pyramidal; BrF₅ square pyramidal; XeF₄ square planar; SF₆ octahedral.
Match List I with List II.
| List I (Molecule) | List II (Number and types of bond/s between two carbon atoms) |
|---|---|
| A. ethane | I. one σ-bond and two π-bonds |
| B. ethene | II. two π-bonds |
| C. carbon molecule, C₂ | III. one σ-bond |
| D. ethyne | IV. one σ-bond and one π-bond |
Choose the correct answer from the options given below:
Ethane: single σ; Ethene: σ+π; C₂ in MO theory: two π (bond order 2); Ethyne: σ+2π.
For the reaction $2A \rightleftharpoons B + C$, $K_c = 4\times 10^{-3}$. At a given time, the composition of reaction mixture is: $[A] = [B] = [C] = 2\times 10^{-3}\,\text{M}$. Then, which of the following is correct?
$Q = [B][C]/[A]^2 = 1 > K_c$, so reaction proceeds backward to lower $Q$.
Match List I with List II.
| List I (Process) | List II (Conditions) |
|---|---|
| A. Isothermal process | I. No heat exchange |
| B. Isochoric process | II. Carried out at constant temperature |
| C. Isobaric process | III. Carried out at constant volume |
| D. Adiabatic process | IV. Carried out at constant pressure |
Choose the correct answer from the options given below:
Isothermal: constant T; Isochoric: constant V; Isobaric: constant P; Adiabatic: no Q.
Ready to ace NEET?
Free access · No credit card required
Yes. You can attempt every NEET question on this page for free without logging in, and check the correct answer with a detailed explanation instantly.
No account is required to attempt questions and view answers. A free account adds bookmarks, personal notes, and progress tracking.
The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.