1.

    Silver amalgam is used in:

    A

    Silvering of mirror

    B

    Filling of teeth

    C

    Both (1) and (2)

    D

    None 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 :Silver amalgam, Applications of materials

    Related Questions

    1.

    Steel contains:

    A

    2.5⎯4.5%C

    B

    0.5⎯1.5%C

    C

    0.12⎯0.25%C

    D

    1⎯2%C

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

    2.

    Anhydrous CuCl2{\rm{CuC}}{{\rm{l}}_2} and CuBr2{\rm{CuB}}{{\rm{r}}_2} exist as:

    A

    Monomer

    B

    Dimer

    C

    Trimer

    D

    polymer

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:d- and f-Block Elements
    🎯Topic:Characteristic Properties
    🎓 Ncert Level:Understanding
    🎯Difficulty :Easy
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :structure of transition metal halides, polymerization

    3.

    The first man-made atom is:

    A

    Os

    B

    Na

    C

    Zr

    D

    Tc

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

    4.

    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 Metals, Oxidation States, Periodic Trends

    5.

    Ferrous sulphate on heating gives:

    A

    SO3{\rm{S}}{{\rm{O}}_3}

    B

    SO2{\rm{S}}{{\rm{O}}_2}

    C

    Fe2O3{\rm{F}}{{\rm{e}}_2}{{\rm{O}}_3}

    D

    All of these

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:d- and f-Block Elements
    🎯Topic:Characteristic Properties
    🎓 Ncert Level:Understanding
    🎯Difficulty :Easy
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Thermal decomposition, Chemical reactions, Iron chemistry, Sulphur oxides

    6.

    The 3d3d-transition series contains elements from atomic number:

    A

    22 to 30

    B

    21 to 30

    C

    21 to 31

    D

    21 to 29

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:d- and f-Block Elements
    🎯Topic:Characteristic Properties
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :3d transition metals, atomic number, periodic table

    7.

    Pick out the correct statements from the following.

    I. Cobalt (III) is more stable in octahedral complexes.

    II. Zinc forms coloured ions or complexes.

    III. Most of the dd-block elements and their compounds are ferromagnetic.

    IV. Osmium shows (VIII) oxidation state.

    V. Cobalt (II) is more stable in octahedral complexes.

    A

    1 and 2

    B

    1 and 3

    C

    2 and 4

    D

    1 and 4

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:d- and f-Block Elements
    🎯Topic:Characteristic Properties
    🎓 Ncert Level:Analyzing
    🎯Difficulty :Hard
    ⚡ Time Required :3 mins
    🔄Ncert Concepts :Transition metal chemistry, oxidation states, complex stability, magnetic properties

    8.

    Which ion has a spin-only magnetic moment of 15\sqrt{15} BM?

    A

    Mn2+Mn^{2+}

    B

    Fe2+Fe^{2+}

    C

    Co2+Co^{2+}

    D

    Ni2+Ni^{2+}

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:d- and f-Block Elements
    🎯Topic:Characteristic Properties
    PYQ YEAR: 2024
    🎓 Ncert Level:Application
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :magnetic moment, electronic configuration, unpaired electrons

    9.

    Stainless steel contains:

    A

    50%Cr

    B

    2.5%Cr

    C

    14%Cr

    D

    2%Cr

    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 stainless steel, Chromium content

    10.

    Which of the following statements contradicts Mendel's laws of inheritance?

    A

    Alleles segregate during gamete formation.

    B

    One allele can be dominant over another.

    C

    Genes on different chromosomes assort independently.

    D

    Genes on the same chromosome are always inherited together (linkage).

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:d- and f-Block Elements
    🎯Topic:Characteristic Properties
    PYQ YEAR: 2022
    🎓 Ncert Level:Application
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Mendelian Inheritance, Linkage, Independent Assortment

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