JEE Main & Advanced Chemistry Analytical Chemistry Question Bank

done Numerical Value Type Questions - Qualitative Analysis Total Questions - 9

• question_answer1)
  Among PbS, CuS, HgS, MnS, CoS, \[B{{i}_{2}}{{S}_{3}}\] , \[Sn{{S}_{2}}\] How many ore black in colour \[\to \]
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• question_answer2)
  How many of the following given white ppt will dil. HCl - \[P{{b}^{+2}}\], \[B{{a}^{+2}}\], \[M{{n}^{+2}}\], \[Z{{n}^{+2}}\], \[A{{g}^{+}}\], \[Hg_{2}^{+2}\]
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• question_answer3)
  How many of the following given ppt with \[{{H}_{2}}S\] in the presence of HCl \[C{{u}^{+2}}\], \[A{{s}^{+3}}\], \[Z{{n}^{+2}}\], \[F{{e}^{+2}}\], \[A{{l}^{+3}}\], \[N{{a}^{+}}\], \[B{{i}^{+3}}\], \[C{{d}^{+2}}\]
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• question_answer4)
  Which of the following does not given precipitate when excess of \[N{{H}_{4}}OH\] is added - \[P{{b}^{+2}}\], \[A{{g}^{+}}\], \[Z{{n}^{+2}}\], \[C{{u}^{+2}}\], \[N{{i}^{+2}}\], \[F{{e}^{+3}}\], \[A{{l}^{+3}}\], \[H{{g}^{+2}}\], \[Hg_{2}^{+2}\]
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• question_answer5)
  How many salts upon heating does not given any residue - \[N{{H}_{4}}Cl\], \[NaN{{O}_{3}}\], \[N{{H}_{4}}N{{O}_{3}}\], \[N{{H}_{4}}N{{O}_{2}}\], \[CuS{{O}_{4}}.5{{H}_{2}}O\] , \[FeS{{O}_{4}}.7{{H}_{2}}O\] , \[AlC{{l}_{3}}\left( s \right)\]
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• question_answer6)
  Radicals belongs to fourth group of basic radical, \[A{{l}^{+3}}\], \[F{{e}^{+3}}\], \[N{{i}^{+2}}\], \[Z{{n}^{+2}}\], \[S{{r}^{+2}}\], \[C{{a}^{+2}}\], \[C{{o}^{+2}}\], \[M{{n}^{+2}}\]
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• question_answer7)
  \[\underset{Black}{\mathop{X\left( S \right)}}\,\xrightarrow{dil\,HCl}Y\uparrow \xrightarrow[NaOH]{N{{a}_{2}}\left[ Fe{{\left( CN \right)}_{5}}\left( NO \right) \right]}\] Purple solution gas Y has been allowed to react with following species in neutral/acidic medium:

  (a) \[FeC{{l}_{3}}\]

  (b) \[CuS{{O}_{4}}\]

  (c) \[BaC{{l}_{2}}\]

  (d) \[S{{O}_{2}}\]

  (e) \[C{{r}_{2}}O_{7}^{2-}\]

  (f) \[C{{H}_{3}}COONa\]

  (g) \[Hg_{2}^{2+}\]

  Then calculate value of \[\left( P+Q-R \right)\]

  P: Number of species which undergoes redox reaction with gas Y.

  Q: Number of species with which gas Y undergoes precipitation.

  R: Number of species with which gas Y produce no observable change.

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• question_answer8)
  Consider the following reaction \[N{{a}_{3}}P{{O}_{4}}+{{\left( N{{H}_{4}} \right)}_{2}}Mo{{O}_{4}}+HN{{O}_{3}}\left( dil. \right)\to 'X'\] (canary yellow ppt) Then calculate total number of atoms of 15th group elements which are \[s{{p}^{3}}\] hybridized in compound \['X'\] .
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• question_answer9)
  An aqueous solution of contains \[H{{g}^{2+}}\], \[Hg_{2}^{2+}\], \[P{{b}^{2+}}\] and \[C{{d}^{2+}}\]. Out of these, how many ions will produce white precipitate with dilute HCl?
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