P Block Elements — JEE Advanced Previous Year Questions

How many JEE Advanced questions come from P Block Elements?

P Block Elements has contributed 31 questions to Joint Entrance Examination (Advanced) papers between 2016 and 2026 — an average of about 3 questions a year. That count is measured from EByAi’s bank of 18,502 JEE Advanced questions, not estimated from a syllabus. Every one of the 31 questions carries a written, step-by-step solution, and each is tagged to P Block Elements within Chemistry, so you can drill this chapter across every year at once instead of hunting through paper PDFs. Practising a chapter’s full PYQ history is the fastest way to learn the patterns examiners reuse.

Sample P Block Elements questions from real JEE Advanced papers

These are 5 real questions from the bank — exactly as asked, with the answer one tap away. All 31 P Block Elements questions (with full written solutions) are available in practice.

1. Question 1 · JEE Advanced 2025

   The heating of NH 4 NO 2 at 60–70 °C and NH 4 NO 3 at 200–250 °C is associated with the formation of nitrogen containing compounds X and Y , respectively. X and Y , respectively, are
   1. (A)N 2 and N 2 O
   2. (B)NH 3 and NO 2
   3. (C)NO and N 2 O
   4. (D)N 2 and NH 3
   Show answerAnswer

   Answer: (A) N 2 and N 2 O

2. Question 2 · JEE Advanced 2024

   The species formed on fluorination of phosphorus pentachloride in a polar organic solvent are
   1. (A)${\left[{\mathrm{PF}}_4\right]}^{+}{\left[{\mathrm{PF}}_6\right]}^{-}$and ${\left[{\mathrm{PCl}}_4\right]}^{+}{\left[{\mathrm{PF}}_6\right]}^{-}$
   2. (B)${\left[{\mathrm{PCl}}_4\right]}^{+}{\left[{\mathrm{PCl}}_4{\mathrm{F}}_2\right]}^{-}$and ${\left[{\mathrm{PCl}}_4\right]}^{+}{\left[{\mathrm{PF}}_6\right]}^{-}$
   3. (C)${\mathrm{PF}}_3$ and ${\mathrm{PCl}}_3$
   4. (D)${\mathrm{PF}}_5$ and ${\mathrm{PCl}}_3$
   Show answerAnswer

   Answer: (B) ${\left[{\mathrm{PCl}}_4\right]}^{+}{\left[{\mathrm{PCl}}_4{\mathrm{F}}_2\right]}^{-}$and ${\left[{\mathrm{PCl}}_4\right]}^{+}{\left[{\mathrm{PF}}_6\right]}^{-}$

3. Question 3 · JEE Advanced 2016

   The increasing order of atomic radii of the following group 13 elements is
   1. (A)Al < Ga < In < Tl
   2. (B)Ga < Al < In < Tl
   3. (C)Al < In < Ga < Tl
   4. (D)Al < Ga < Tl < In
   Show answerAnswer

   Answer: (B) Ga < Al < In < Tl

4. Question 4 · JEE Advanced 2024

   At room temperature, disproportionation of an aqueous solution of in situ generated nitrous acid $\left({\mathrm{HNO}}_2\right)$ gives the species
   1. (A)${\mathrm{H}}_3{\mathrm{O}}^{+},{\mathrm{NO}}_3^{-}$and $\mathrm{NO}$
   2. (B)${\mathrm{H}}_3{\mathrm{O}}^{+},{\mathrm{NO}}_3{}^{-}$and ${\mathrm{NO}}_2$
   3. (C)${\mathrm{H}}_3{\mathrm{O}}^{+},{\mathrm{NO}}^{-}$and ${\mathrm{NO}}_2$
   4. (D)${\mathrm{H}}_3{\mathrm{O}}^{+},{\mathrm{NO}}_3{}^{-}$and ${\mathrm{N}}_2\mathrm{O}$
   Show answerAnswer

   Answer: (A) ${\mathrm{H}}_3{\mathrm{O}}^{+},{\mathrm{NO}}_3^{-}$and $\mathrm{NO}$

5. Question 5 · JEE Advanced 2022

   The reaction of ${\mathrm{HClO}}_3$ with $\mathrm{HCl}$ gives a paramagnetic gas, which upon reaction with ${\mathrm{O}}_3$ produces
   1. (A)${\mathrm{Cl}}_2\mathrm{O}$
   2. (B)${\mathrm{ClO}}_2$
   3. (C)${\mathrm{Cl}}_2{\mathrm{O}}_6$
   4. (D)${\mathrm{Cl}}_2{\mathrm{O}}_7$
   Show answerAnswer

   Answer: (C) ${\mathrm{Cl}}_2{\mathrm{O}}_6$

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