202560 marks16 questions
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Source: JEE (Advanced) 2025, Paper 1, Chemistry, published by JEE (Advanced). The official PDF
The heating of NH₄NO₂ at 60−70 °C and NH₄NO₃ at 200−250 °C is associated with the formation of nitrogen containing compounds X and Y, respectively. X and Y, respectively, are
The correct order of the wavelength maxima of the absorption band in the ultraviolet-visible region for the given complexes is
One of the products formed from the reaction of permanganate ion with iodide ion in neutral aqueous medium is
Regarding the molecular orbital (MO) energy levels for homonuclear diatomic molecules, the INCORRECT statement(s) is(are)
The pair(s) of diamagnetic ions is(are)
In an electrochemical cell, dichromate ions in aqueous acidic medium are reduced to Cr³⁺. The current (in amperes) that flows through the cell for 48.25 minutes to produce 1 mole of Cr³⁺ is ______. Use: 1 Faraday = 96500 C mol⁻¹
At 25 °C, the concentration of H⁺ ions in 1.00 × 10⁻³ M aqueous solution of a weak monobasic acid having acid dissociation constant (Ka) of 4.00 × 10⁻¹¹ is X × 10⁻⁷ M. The value of X is ______. Use: Ionic product of water (Kw) = 1.00 × 10⁻¹⁴ at 25 °C
Molar volume (Vm) of a van der Waals gas can be calculated by expressing the van der Waals equation as a cubic equation with Vm as the variable. The ratio (in mol dm⁻³) of the coefficient of Vm² to the coefficient of Vm for a gas having van der Waals constants a = 6.0 dm⁶ atm mol⁻² and b = 0.060 dm³ mol⁻¹ at 300 K and 300 atm is ______. Use: Universal gas constant (R) = 0.082 dm³ atm mol⁻¹ K⁻¹
Considering ideal gas behavior, the expansion work done (in kJ) when 144 g of water is electrolyzed completely under constant pressure at 300 K is ______. Use: Universal gas constant (R) = 8.3 J K⁻¹ mol⁻¹; Atomic mass (in amu): H = 1, O = 16
The monomer (X) involved in the synthesis of Nylon 6,6 gives positive carbylamine test. If 10 moles of X are analyzed using Dumas method, the amount (in grams) of nitrogen gas evolved is ______. Use: Atomic mass of N (in amu) = 14