25 JEE Main 2025 d and f Block Elements previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2025 previous-year questions from the d and f Block Elements chapter of Chemistry. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the d and f Block Elements chapter hub.
The incorrect relationship in the following pairs in relation to ionisation enthalpies is :
Given below are two statements : Statement I : CrO₃ is a stronger oxidizing agent than MoO₃ Statement II : Cr(VI) is mo…
Preparation of potassium permanganate from MnO₂ involves two step process in which the 1st step is a reaction with KOH…
The amphoteric oxide among V₂ O₃, ~V₂ O₄ and V₂ O₅, upon reaction with alkali leads to formation of an oxide anion. The…
Among, Sc, Mn, Co and Cu , identify the element with highest enthalpy of atomisation. The spin only magnetic moment val…
The correct set of ions (aqueous solution) with same colour from the following is:
KMnO₄ acts as an oxidising agent in acidic medium. ' X ' is the difference between the oxidation states of Mn in reacta…
Identify the inorganic sulphides that are yellow in colour : (A) (NH₄ )₂ ~S (B) Pbs (C) Cus (D) As₂ ~S₃ (E) As₂ ~S₅ Cho…
The first transition series metal ' M ' has the highest enthalpy of atomisation in its series. One of its aquated ion (…
Niobium ( Nb ) and ruthenium (Ru) have " x " and " y " number of electrons in their respective 4 d orbitals. The value…
Log in to unlock the full list, track what you've solved, and practice on the TCS iON-style CBT player. It's free.