D and F Block Elements Quiz – JEE Main 2026 | NEET JEE Rankers
D & f Block Elements – JEE Main 2026 Quiz
Q1. Correct IUPAC name of K₂MnO₄ is:
Potassium tetraoxidomanganate (VI)
Dipotassium tetraoxidomanganate (VII)
Potassium tetraoxopermanganate (VI)
Potassium tetraoxidomanganese (VI)
Q2. Electronic configuration of Einsteinium (Z = 99) is:
[Rn] 5f¹³ 6d⁰ 7s²
[Rn] 5f¹² 6d⁰ 7s²
[Rn] 5f¹¹ 6d⁰ 7s²
[Rn] 5f¹⁰ 6d⁰ 7s²
Q3. Pair of transition metal ions having same number of unpaired electrons is:
Ti³⁺ , Mn²⁺
Ti²⁺ , Co²⁺
Fe³⁺ , Cr²⁺
V²⁺ , Co²⁺
Q4. Number of colourless lanthanoid ions among Eu³⁺, Lu³⁺, Nd³⁺, La³⁺, Sm³⁺ is:
✔ Correct Answer: 2
Q5. Iron(III) catalyses iodide–persulphate reaction. Correct statements are:
B and C only
A only
A and D only
C and D only
Q6. Correct order of melting points of (Mn, Fe), (Tc, Ru) and (Re, Os) is:
Fe < Mn, Ru < Tc, Re < Os
Fe < Mn, Ru < Tc, Os < Re
Mn < Fe, Tc < Ru, Re < Os
Mn < Fe, Tc < Ru, Os < Re
Q7. Correct set of ions having same colour in aqueous solution is:
V²⁺ , Cr³⁺ , Mn³⁺
Ti⁴⁺ , V⁴⁺ , Mn²⁺
Sc³⁺ , Ti³⁺ , Cr²⁺
Zn²⁺ , V³⁺ , Fe³⁺
Q8. Sum of spin-only magnetic moments (nearest integer) of products formed in fusion of chromite ore is:
✔ Correct Answer: 6
Q9. Metal ion whose configuration is ligand independent and gives violet colour in borax bead test (hot) is:
Cr³⁺
Ti³⁺
Ni²⁺
Mn²⁺
Q10. Among Sc, Mn, Co and Cu, element with highest enthalpy of atomisation has spin-only moment (BM):
✔ Correct Answer: 4
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