List of top Chemistry Questions asked in WBJEE

Which of the following ion/ions is/are diamagnetic?
Identify the correct statement(s):
Which of the following statement(s) is/are correct?
The degree of dissociation of acetic acid is:
Which of the following statements about the SN2 reaction mechanism is/are true?
pH of 10−8 M HCl solution is:
The number(s) of -OH group(s) present in H3PO3 and H3PO4 is/are:
Which of the following represent(s) the enantiomer of Y?
Which of the following represent(s) the enantiomer of Y?
Correct solubility order of AgF, AgCl, AgBr, AgI in water is:
What will be the change in acidity if:
(i) CuSO4 is added to saturated (NH4)2SO4 solution,
(ii) SbF5 is added to anhydrous HF?
Which of the following species exhibits both LMCT and paramagnetism?
Number of moles of ions produced by the complete dissociation of one mole of Mohr’s salt in water is:
How many P–O–Plinkages are there in P4O10?
Q and R in the reaction sequences are respectively:
Q and R in the reaction
Which of the following contains the maximum number of lone pairs on the central atom?
Equal volumes of aqueous solution of 0.1 M HCl and 0.2 M H2SO4 are mixed. The concentration of H+ ions in the resulting solution is:
Which of the following statements is true about the equilibrium constant and rate constant of a single-step chemical reaction?
The correct order of boiling points of the given aqueous solutions is
For a first-order reaction with rate constant k, the slope of the plot of log(reactant concentration) against time is:
Which hydrogen-like species will have the same radius as the 1st Bohr orbit of a hydrogen atom?
After the emission of a β-particle followed by an α-particle from \(^{214}_{83}\text{Bi}\), the number of neutrons in the atom is:
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:
Which of the following statements is correct for a spontaneous polymerization reaction?
Consider an electron moving in the first Bohr orbit of a He\(^+\) ion with velocity \(v_1\). If it is allowed to move in the third Bohr orbit with velocity \(v_3\), determine the correct \(v_3 : v_1\) ratio.\\
The compressibility factor for a van der Waals gas at high pressure is