Principles of Qualitative Analysis

JEE Advanced · Chemistry · 31 past questions

1. Q1 2025 Paper 1

   The correct match of the group reagents in List-I for precipitating the metal ion given in List-II from…

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2. Q2 2023 Paper 1

   In the scheme given below, X and Y, respectively, are (with a figure)

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3. Q3 2022 Paper 1

   The treatment of an aqueous solution of 3.74 g of $\mathrm{Cu(NO_3)_2}$ with excess KI results in a brown…

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4. Q4 2022 Paper 1

   Match the compounds in LIST-I with the observations in LIST-II, and choose the correct option.

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5. Q5 2021 Paper 1

   The reaction of $\mathbf{Q}$ with PhSNa yields an organic compound (major product) that gives positive Carius… (with a figure)

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6. Q6 2021 Paper 1

   A mixture of two salts is used to prepare a solution S, which gives the following results… (with a figure)

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7. Q7 2021 Paper 2

   Paragraph…

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8. Q8 2020 Paper 1

   A colorless aqueous solution contains nitrates of two metals, X and Y. When it was added to an aqueous…

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9. Q9 2019 Paper 1

   The green colour produced in the borax bead test of a chromium(III) salt is due to

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10. Q10 2018 Paper 2

    The correct option(s) to distinguish nitrate salts of $\mathrm{Mn^{2+}}$ and $\mathrm{Cu^{2+}}$ taken…

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11. Q11 2016 Paper 1

    The reagent(s) that can selectively precipitate $\mathrm{S^{2-}}$ from a mixture of $\mathrm{S^{2-}}$ and…

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12. Q12 2016 Paper 2

    In the following reaction sequence in aqueous solution, the species X, Y and Z, respectively, are (with a figure)

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13. Q13 2015 Paper 2

    The pair(s) of ions where BOTH the ions are precipitated upon passing H$_2$S gas in presence of dilute HCl…

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14. Q14 2014 Paper 1

    Among PbS, CuS, HgS, MnS, $\mathrm{Ag_2S}$, NiS, CoS, $\mathrm{Bi_2S_3}$ and $\mathrm{SnS_2}$, the total…

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15. Q15 2014 Paper 2

    Paragraph For Question 33 and 34… (with a figure)

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16. Q16 2014 Paper 2

    Paragraph For Question 33 and 34… (with a figure)

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17. Q17 2013 Paper 1

    Upon treatment with ammoniacal $H_2S$, the metal ion that precipitates as a sulfide is

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18. Q18 2013 Paper 2

    Paragraph for Questions 33 and 34…

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19. Q19 2013 Paper 2

    Paragraph for Questions 33 and 34…

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20. Q20 2012 Paper 1

    Which of the following hydrogen halides react(s) with $AgNO_3(aq)$ to give a precipitate that dissolves in…

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21. Q21 2011 Paper 1

    Paragraph for Question Nos. 12 to 14…

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22. Q22 2011 Paper 1

    Paragraph for Question Nos. 12 to 14…

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23. Q23 2011 Paper 1

    Paragraph for Question Nos. 12 to 14…

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24. Q24 2011 Paper 2

    Passing H$_2$S gas into a mixture of Mn$^{2+}$, Ni$^{2+}$, Cu$^{2+}$ and Hg$^{2+}$ ions in an acidified…

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25. Q25 2009 Paper 1

    Paragraph for Question Nos. 13 to 15…

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26. Q26 2009 Paper 1

    Paragraph for Question Nos. 13 to 15…

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27. Q27 2009 Paper 1

    Paragraph for Question Nos. 13 to 15…

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28. Q28 2008 Paper 1

    A solution of colourless salt $\mathbf{H}$ on boiling with excess NaOH produces a non-flammable gas. The gas…

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29. Q29 2007 Paper 2

    A solution of a metal ion when treated with KI gives a red precipitate which dissolves in excess KI to give a…

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30. Q30 2007 Paper 2

    Sodium fusion extract, obtained from aniline, on treatment with iron(II) sulphate and $H_2SO_4$ in presence…

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31. Q31 2007 Paper 2

    Sodium fusion extract, obtained from aniline, on treatment with iron(II) sulphate and $H_2SO_4$ in presence…

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