The JEE Main Chemistry section requires speed and accuracy, along with a thorough understanding of the Some Applications of d- and f-Block Elements. This article provides a set of JEE Main PYQs on Some Applications of d- and f-Block Elements to help you understand the topic and improve your problem-solving skills with the help of detailed solutions by ensuring conceptual clarity, which will help you in the JEE Main 2026 preparation.
Whether you're revising the basics or testing your knowledge, these JEE Main PYQs will serve as a valuable practice resource.
The JEE Main 2026 exam is likely to continue on the same pattern as JEE Main 2025. Out of 90 questions, students can expect a fair mix from all three subjects. To get an edge, going through JEE Main previous year questions (PYQs) is one of the best strategies.
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JEE Main PYQs on Some Applications of d and f-Block Elements
1.
The element playing significant role in neuromuscular function and interneuronal transmission is :
- Be
- $Mg$
- Ca
- $Li$
2.
Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.Assertion A: Permanganate titrations are not performed in presence of hydrochloric acid.Reason R: Chlorine is formed as a consequence of oxidation of hydrochloric acid.In the light of the above statements, choose the correct answer from the options given below.- Both A and R are true and R is the correct explanation of A
- Both A and R are true but R is NOT the correct explanation of A
- A is true but R is false
- A is false but R is true
3.
When $Cu ^{2+}$ ion is treated with $KI$, a white precipitate, $X$ appears in solution The solution is titrated with sodium thiosulphate, the compound $Y$ is formed $X$ and $Y$ respectively are
- $X = CuI _2 \,\,\,Y = Na _2 S _2 O _3$
- $X = CuI _2 \,\,\, Y = Na _2 S _4 O _6$
- $X = Cu _2 I _2 \,\,\,Y = Na _2 S _4 O _6$
- $X = Cu _2 I _2 \,\,\, Y = Na _2 S _4 O _5$
4.
The transition element that has lowest enthalpy of atomisation, is :- Zn
- Cu
- V
- Fe
5.
Choose the correct answers.- \(Mn_2O_7 \) is a oil at room temperature.
- \(V_2O_4\) react with acid to give \(VO^{2+}\).
- \(CrO\) is a basic oxide.
- \(V_2O_5\) does not react with acids.
- A, B and C only
- B, C and D only
- A only
- B and C only
6.
The electronic configurations of bivalent europium and trivalent cerium are : (atomic number: $Xe = 54, Ce =58, Eu ??63$)- $[Xe] 4f^7$ and $[Xe] 4f^1$
- $[Xe] 4f^7 \,6s^2$ and $[Xe] 4f^2\,6s^2$
- $[Xe] 4f^2$ and $[Xe] 4f^7$
- $[Xe] 4f^4$ and $[Xe] 4f^9$
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