The p-Block Elements

JEE Advanced · Chemistry · 62 past questions

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1. Q3 2025 Paper 1

   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…

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2. Q6 2024 Paper 1

   At room temperature, disproportionation of an aqueous solution of in situ generated nitrous acid (HNO$_2$)…

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3. Q8 2024 Paper 2

   The compound(s) having peroxide linkage is(are)

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4. Q12 2022 Paper 1

   The treatment of galena with HNO$_3$ produces a gas that is

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5. Q15 2022 Paper 2

   The reaction of $\mathrm{Pb(NO_3)_2}$ and NaCl in water produces a precipitate that dissolves upon the…

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6. Q25 2017 Paper 1

   The colour of the X$_2$ molecules of group 17 elements changes gradually from yellow to violet down the…

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7. Q27 2017 Paper 2

   The order of the oxidation state of the phosphorus atom in H$_3$PO$_2$, H$_3$PO$_4$, H$_3$PO$_3$, and…

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8. Q30 2017 Paper 2

   Upon heating $\mathrm{KClO_3}$ in the presence of catalytic amount of $\mathrm{MnO_2}$, a gas $\mathbf{W}$ is…

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9. Q34 2015 Paper 2

   Three moles of $B_2H_6$ are completely reacted with methanol. The number of moles of boron containing product…

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10. Q36 2015 Paper 2

    Under hydrolytic conditions, the compounds used for preparation of linear polymer and for chain termination…

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11. Q37 2014 Paper 1

    The correct statement(s) for orthoboric acid is/are

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12. Q40 2013 Paper 1

    Concentrated nitric acid, upon long standing, turns yellow-brown due to the formation of

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13. Q41 2013 Paper 2

    The reactions of $Cl_2$ gas with cold-dilute and hot-concentrated $NaOH$ in water give sodium salts of two…

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14. Q43 2012 Paper 2

    Paragraph for Questions 29 and 30…

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15. Q44 2012 Paper 2

    With respect to graphite and diamond, which of the statement(s) given below is (are) correct ?

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16. Q45 2011 Paper 1

    Extra pure N$_2$ can be obtained by heating

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17. Q47 2010 Paper 1

    The value of n in the molecular formula Be$_n$Al$_2$Si$_6$O$_{18}$ is

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18. Q49 2009 Paper 1

    The reaction of P$_4$ with X leads selectively to P$_4$O$_6$. The X is

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19. Q51 2009 Paper 2

    The nitrogen oxide(s) that contain(s) N-N bond(s) is(are)

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20. Q53 2009 Paper 2

    The coordination number of Al in the crystalline state of $\mathrm{AlCl_3}$ is

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21. Q54 2008 Paper 1

    Aqueous solution of Na$_2$S$_2$O$_3$ on reaction with Cl$_2$ gives

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22. Q55 2008 Paper 1

    STATEMENT-1 : $\mathrm{Pb^{4+}}$ compounds are stronger oxidizing agents than $\mathrm{Sn^{4+}}$ compounds.…

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23. Q58 2008 Paper 1

    Paragraph for Question Nos. 64 to 66…

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24. Q59 2007 Paper 1

    STATEMENT-1 : Boron always forms covalent bond.…

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25. Q61 2007 Paper 1

    The structure of XeO$_3$ is

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26. Q62 2007 Paper 1

    XeF$_4$ and XeF$_6$ are expected to be

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