202260 marks18 questions
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Source: JEE (Advanced) 2022, Paper 2, Chemistry, published by JEE (Advanced). The official PDF
Concentration of H₂SO₄ and Na₂SO₄ in a solution is 1 M and 1.8 × 10⁻² M, respectively. Molar solubility of PbSO₄ in the same solution is X × 10⁻Y M (expressed in scientific notation). The value of Y is _________. [Given: Solubility product of PbSO₄ (Ksp) = 1.6 × 10⁻⁸. For H₂SO₄, Ka1 is very large and Ka2 = 1.2 × 10⁻²]
An aqueous solution is prepared by dissolving 0.1 mol of an ionic salt in 1.8 kg of water at 35 ºC. The salt remains 90% dissociated in the solution. The vapour pressure of the solution is 59.724 mm of Hg. Vapor pressure of water at 35 ºC is 60.000 mm of Hg. The number of ions present per formula unit of the ionic salt is _______.
The reaction of Xe and O₂F₂ gives a Xe compound P. The number of moles of HF produced by the complete hydrolysis of 1 mol of P is _______.
Thermal decomposition of AgNO₃ produces two paramagnetic gases. The total number of electrons present in the antibonding molecular orbitals of the gas that has the higher number of unpaired electrons is _______.
The correct option(s) about entropy (S) is(are) [R = gas constant, F = Faraday constant, T = Temperature].
The compound(s) which react(s) with NH₃ to give boron nitride (BN) is(are)
The correct option(s) related to the extraction of iron from its ore in the blast furnace operating in the temperature range 900 – 1500 K is(are)
Among the following, the correct statement(s) about polymers is(are)