201860 marks18 questions
5 of its 18 questions are here. The rest have a figure or are still being checked, so for now they're only in the official PDF.
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Source: JEE (Advanced) 2018, Paper 2, Chemistry, published by JEE (Advanced). The official PDF
The correct option(s) regarding the complex [Co(en)(NH₃)₃(H₂O)]³⁺ (en = H₂NCH₂CH₂NH₂) is (are)
The correct option(s) to distinguish nitrate salts of Mn²⁺ and Cu²⁺ taken separately is (are)
The total number of compounds having at least one bridging oxo group among the molecules given below is ____. N₂O₃, N₂O₅, P₄O₆, P₄O₇, H₄P₂O₅, H₅P₃O₁₀, H₂S₂O₃, H₂S₂O₅
Galena (an ore) is partially oxidized by passing air through it at high temperature. After some time, the passage of air is stopped, but the heating is continued in a closed furnace such that the contents undergo self-reduction. The weight (in kg) of Pb produced per kg of O₂ consumed is ____. (Atomic weights in g mol⁻¹: O = 16, S = 32, Pb = 207)
To measure the quantity of MnCl₂ dissolved in an aqueous solution, it was completely converted to KMnO₄ using the reaction, MnCl₂ + K₂S₂O₈ + H₂O → KMnO₄ + H₂SO₄ + HCl (equation not balanced). Few drops of concentrated HCl were added to this solution and gently warmed. Further, oxalic acid (225 mg) was added in portions till the colour of the permanganate ion disappeared. The quantity of MnCl₂ (in mg) present in the initial solution is ____. (Atomic weights in g mol⁻¹: Mn = 55, Cl = 35.5)