1.

    The compound insoluable in water is

    A

    Mercurous nitrate

    B

    Mercurous chloride

    C

    Mercuric nitrate

    D

    Mercurous perchlorate

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

    Related Questions

    1.

    Variable valency is a general feature of …..elements.

    A

    ss-block

    B

    pp-block

    C

    dd-block

    D

    All of these

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

    2.

    From a solution of CuSO4{\rm{CuS}}{{\rm{O}}_4}, the metal used to recover copper is :

    A

    Na

    B

    Ag

    C

    Hg

    D

    Fe

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:d- and f-Block Elements
    🎯Topic:Characteristic Properties
    🎓 Ncert Level:Application
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Electrochemical series, Displacement reaction, Metal reactivity

    3.

    The chemical formula of azurite is:

    A

    Cu(OH)2.2CuCO3{\rm{Cu}}{\left( {{\rm{OH}}} \right)_2}.2{\rm{CuC}}{{\rm{O}}_3}

    B

    CuSO4.3Cu(OH)2{\rm{CuS}}{{\rm{O}}_4}.3{\rm{Cu}}{\left( {{\rm{OH}}} \right)_2}

    C

    Cu(OH)2.CuCO3{\rm{Cu}}{\left( {{\rm{OH}}} \right)_2}.{\rm{CuC}}{{\rm{O}}_3}

    D

    CuFeS2{\rm{CuFe}}{{\rm{S}}_2}

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:d- and f-Block Elements
    🎯Topic:Characteristic Properties
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Chemical formula, mineralogy, azurite

    4.

    Arrange the following oxides in increasing order of basic character: extV2extO3ext{V}_2ext{O}_3, extV2extO4ext{V}_2ext{O}_4, extV2extO5ext{V}_2ext{O}_5.

    A

    extV2extO3<extV2extO4<extV2extO5ext{V}_2ext{O}_3 < ext{V}_2ext{O}_4 < ext{V}_2ext{O}_5

    B

    extV2extO5<extV2extO4<extV2extO3ext{V}_2ext{O}_5 < ext{V}_2ext{O}_4 < ext{V}_2ext{O}_3

    C

    extV2extO4<extV2extO3<extV2extO5ext{V}_2ext{O}_4 < ext{V}_2ext{O}_3 < ext{V}_2ext{O}_5

    D

    extV2extO5<extV2extO3<extV2extO4ext{V}_2ext{O}_5 < ext{V}_2ext{O}_3 < ext{V}_2ext{O}_4

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:d- and f-Block Elements
    🎯Topic:Characteristic Properties
    PYQ YEAR: 2023
    🎓 Ncert Level:Application
    🎯Difficulty :Easy
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :d-block elements, transition metal oxides, oxidation states, acidic and basic character

    5.

    An aqueous solution of CuSO4{\rm{CuS}}{{\rm{O}}_4} and NH4OH{\rm{N}}{{\rm{H}}_4}{\rm{OH}} gives a deep blue complex of:

    A

    Cuprammonium sulphate

    B

    Cuprammonium hydroxide

    C

    Sodium hexametaphosphate

    D

    None of the above

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:d- and f-Block Elements
    🎯Topic:Characteristic Properties
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :complex ion formation, transition metal chemistry, coordination compounds

    6.

    Which form of iron is least ductile?

    A

    Hard steel

    B

    Cast iron

    C

    Mild steel

    D

    Wrought steel

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:d- and f-Block Elements
    🎯Topic:Characteristic Properties
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :ductility, material properties of iron, different forms of iron

    7.

    The colour of 62Sm3+_{62}{\rm{S}}{{\rm{m}}^{3 + }} is yellow. The expected colour of   66Dy3+{{\rm{\;}}_{66}}{\rm{D}}{{\rm{y}}^{3 + }} is

    A

    Yellow

    B

    Colorless

    C

    Pink

    D

    Green

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:d- and f-Block Elements
    🎯Topic:Characteristic Properties
    🎓 Ncert Level:Application
    🎯Difficulty :Hard
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Lanthanide colors, Electronic transitions, f-f transitions

    8.

    The composition of bell metal is

    A

    Cu + Sn

    B

    Cu + Ni

    C

    Cu + Zn

    D

    Cu + Ag

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:d- and f-Block Elements
    🎯Topic:Characteristic Properties
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Composition of alloys, Bell metal

    9.

    Zinc reacts with very dilute nitric acid to produce:

    A

    NO

    B

    NH4NO3{\rm{N}}{{\rm{H}}_4}{\rm{N}}{{\rm{O}}_3}

    C

    NO2{\rm{N}}{{\rm{O}}_2}

    D

    H2{{\rm{H}}_2}

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:d- and f-Block Elements
    🎯Topic:Characteristic Properties
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Redox Reactions, Nitric Acid Reactions, Metal Reactivity

    10.

    dd-block elements generally form:

    A

    Covalent hydrides

    B

    Metallic hydrides

    C

    Interstitial hydrides

    D

    Salt-like hydrides

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:d- and f-Block Elements
    🎯Topic:Characteristic Properties
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :d-block elements, hydrides, interstitial compounds

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