List of top Questions asked in WBJEE- 2024

A satellite of mass \(m\) rotates round the earth in a circular orbit of radius \(R\). If the angular momentum of the satellite is \(J\), then its kinetic energy (\(K\)) and the total energy (\(E\)) of the satellite are:

Metallic conductors and semiconductors are heated separately. What are the changes in conductivity?

At \(25^\circ \text{C}\), the ionic product of water is \(10^{-14}\). The free energy change (\(\Delta G^\circ\)) for the self-ionization of water in kcal mol\(^{-1}\) is:

Toluene reacts with mixed acid at 25°C to produce:

For a spontaneous process, the incorrect statement is:

How many P–O–Plinkages are there in P₄O₁₀?

What will be the change in acidity if:
(i) CuSO₄ is added to saturated (NH₄)₂SO₄ solution,
(ii) SbF₅ is added to anhydrous HF?

Identify the correct statement(s):

Which of the following statements is true about the equilibrium constant and rate constant of a single-step chemical reaction?

Identify the incorrect statement among the following:

pH of 10⁻⁸ M HCl solution is:

For a first-order reaction with rate constant k, the slope of the plot of log(reactant concentration) against time is:

Which of the following species exhibits both LMCT and paramagnetism?

Which of the following statement(s) is/are correct?

The internal energy of a thermodynamic system is given by \( U = a s^{4/3} v^\alpha \), where \( s \) is entropy, \( v \) is volume, and \( a \) and \( \alpha \) are constants. The value of \( \alpha \) is:

Two straight conducting plates form an angle θ where their ends are joined. A conducting bar in contact with the plates and forming an isosceles triangle with them, starts at the vertex at time t = 0 and moves with constant velocity v to the right as shown in the figure. A magnetic field B points out of the page. The magnitude of emf induced at t = 1 second will be:

Correct solubility order of AgF, AgCl, AgBr, AgI in water is:

Which of the following ion/ions is/are diamagnetic?

Which of the following represent(s) the enantiomer of Y?

Let \( \theta \) be the angle between two vectors \( \vec{A} \) and \( \vec{B} \). If \( \hat{a}_\perp \) is the unit vector perpendicular to \( \vec{A} \), then the direction of \( \vec{B} - \vec{B} \sin \theta \hat{a}_\perp \) is:

The reactivity order of the following molecules towards SN1 reaction is:
Allyl chloride (I), Chlorobenzene (II), Ethyl chloride (III)

The product ’P’ in the above reaction is: