JEE Advanced 2025 Paper 1 Online

The reaction sequence given below is carried out with 16 moles of X. The yield of the major product in each step is given below the product in parentheses. The amount (in grams) of S produced is ______.Use: Atomic mass (in amu): H = 1, C = ...

Regarding the molecular orbital (MO) energy levels for homonuclear diatomic molecules, the INCORRECT statement(s) is(are)

The major products obtained from the reactions in List-II are the reactants for the named reactions mentioned in List-I. Match each entry in List-I with the appropriate entry in List-II and choose the correct option.

List–I
List–...

The correct order of the wavelength maxima of the absorption band in the ultraviolet-visible region for the given complexes is

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

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...

For the reaction sequence given below, the correct statement(s) is(are) (In the options, X is any atom other than carbon and hydrogen, and it is different in P, Q and R)

Consider the depicted hydrogen (H) in the hydrocarbons given below. The most acidic hydrogen (H) is

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...

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 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

Match the compounds in List-I with the appropriate observations in List-II and choose the correct option.

List–I
List–II


(P)
(1) Reaction with phenyl diazonium salt gives
yellow dye.



(Q)
(2) R...

One of the products formed from the reaction of permanganate ion with iodide ion in neutral aqueous medium is

The correct match of the group reagents in List-I for precipitating the metal ion given in List-II from solutions, is





List–I

List–II





(P) Passing $\mathrm{H_2S}$ in the presence of $\mathrm{NH_4OH}$

(1) $\ma...

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