1.

    Silver, mercury and lead have been placed in same group of qualitative analysis, because they form:

    A

    Carbonates soluble in dilute HNO3{\rm{HN}}{{\rm{O}}_3}

    B

    Nitrates

    C

    Insoluble chlorides

    D

    Same type of coloured compounds

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:d- and f-Block Elements
    🎯Topic:Characteristic Properties
    🎓 Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Qualitative analysis, Group reagents, Solubility rules, Chloride precipitation

    Related Questions

    1.

    Zr and Y have about the same radius

    A

    Zr and Y are in the same group (column), so they have similar radii.

    B

    The lanthanide contraction causes Zr's radius to be smaller than expected, making it similar to Y's radius.

    C

    Relativistic effects cause the radii of both Zr and Y to be larger than expected, making them similar.

    D

    Yttrium's radius is unexpectedly large due to electron-electron repulsion, making it similar to Zr's radius.

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:d- and f-Block Elements
    🎯Topic:Characteristic Properties
    🎓 Ncert Level:Application
    🎯Difficulty :Easy
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :complex ions, precipitation reactions, iron chemistry, ferric and ferrocyanide

    2.

    Anhydrous ferric chloride is prepared by

    A

    Dissolving Fe(OH)3{\rm{Fe}}{\left( {{\rm{OH}}} \right)_3} in concentrated HCl{\rm{HCl}}.

    B

    Dissolving Fe(OH)3{\rm{Fe}}{\left( {{\rm{OH}}} \right)_3} in dilute HCl{\rm{HCl}}.

    C

    Passing dry HCl{\rm{HCl}} over heated iron scrap.

    D

    Passing dry Cl2{\rm{C}}{{\rm{l}}_2} gas over heated iron scrap.

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:d- and f-Block Elements
    🎯Topic:Characteristic Properties
    🎓 Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Chemical reactions, synthesis of metal halides, anhydrous compounds

    3.

    Metallic bonds do not play a role in:

    A

    The ductility of metals

    B

    The solubility of organic compounds

    C

    Electrical conductivity in ceramics

    D

    Thermal conductivity in plastics

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:d- and f-Block Elements
    🎯Topic:Characteristic Properties
    🎓 Ncert Level:Analyzing
    🎯Difficulty :Hard
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :metallic bonding, alloys, semiconductors

    4.

    When I−{{\rm{I}}^ - } is oxidized by MnO4−{\rm{MnO}}_4^ - in alkaline medium, I−  convets  into{{\rm{I}}^ - }{\rm{\;convets\;into}}

    A

    IO3−{\rm{IO}}_3^ -

    B

    I2{{\rm{I}}_2}

    C

    IO4−{\rm{IO}}_4^ -

    D

    IO−{\rm{I}}{{\rm{O}}^ - }

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:d- and f-Block Elements
    🎯Topic:Characteristic Properties
    🎓 Ncert Level:Application
    🎯Difficulty :Hard
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Redox Reaction, Oxidation States, Balancing Redox Reactions

    5.

    Which transition elements exhibit +8 oxidation states?

    A

    Cu, Zn

    B

    Ru, Os

    C

    Ag, Au

    D

    Cu, Cr

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:d- and f-Block Elements
    🎯Topic:Characteristic Properties
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :transition elements, oxidation states

    6.

    The colour of an electrolyte solution depends on:

    A

    The nature of the anion

    B

    The nature of the cation

    C

    The nature of both the ions

    D

    The nature of the solvent

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:d- and f-Block Elements
    🎯Topic:Characteristic Properties
    🎓 Ncert Level:Understanding
    🎯Difficulty :Easy
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :electrolyte solutions, ion color, transition metal ions

    7.

    Preparation of looking mirrors involves the use of:

    A

    Red lead

    B

    Ammoniacal silver nitrate

    C

    Ammoniacal AgNO3+{\rm{AgN}}{{\rm{O}}_3} + red lead

    D

    Ammoniacal AgNO3+{\rm{AgN}}{{\rm{O}}_3} + red lead + HCHO

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:d- and f-Block Elements
    🎯Topic:Characteristic Properties
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Chemical reactions, Silver mirror test, Reducing agents

    8.

    What effect is noticed on shaking dilute sulphuric acid with a small quantity of anhydrous copper sulphate?

    A

    The white solid dissolves to form a colourless solution

    B

    The white solid dissolves to form a green solution

    C

    The white solid turns blue but does not dissolve

    D

    The white solid dissolves to form a blue solution

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:d- and f-Block Elements
    🎯Topic:Characteristic Properties
    🎓 Ncert Level:Understanding
    🎯Difficulty :Easy
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :chemical reactions, copper sulfate, hydration

    9.

    The inner transition elements are the elements in which the added electrons go to:

    A

    (n−1)  d−n - 1)\;d - orbitals

    B

    (n−2)  fn - 2)\;f-orbitals

    C

    (n−1)  dn - 1)\;d-orbitals and (n−n - 1) ff-orbitals

    D

    (n−1)  dn - 1)\;d-orbitals and ns−ns - orbitals

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:d- and f-Block Elements
    🎯Topic:Characteristic Properties
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :electronic configuration, inner transition elements, f-orbitals

    10.

    Zn gives H2{{\rm{H}}_2} gas with H2SO4{{\rm{H}}_2}{\rm{S}}{{\rm{O}}_4} and HCl but not with HNO3{\rm{HN}}{{\rm{O}}_3} because:

    A

    Zn acts as an oxidising agent when react with HNO3{\rm{HN}}{{\rm{O}}_3}

    B

    HNO3{\rm{HN}}{{\rm{O}}_3} is weaker acid than H2SO4{{\rm{H}}_2}{\rm{S}}{{\rm{O}}_4} and HCl

    C

    In electrochemical series Zn is above hydrogen

    D

    NO3−{\rm{NO}}_3^ - ion is reduced in preference to hydronium ion

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:d- and f-Block Elements
    🎯Topic:Characteristic Properties
    🎓 Ncert Level:Analyzing
    🎯Difficulty :Medium
    ⚡ Time Required :3 mins
    🔄Ncert Concepts :Redox reactions, Electrochemical series, Reduction potential

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