NEET Chemistry MCQs

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    NEET Questions / Chemistry

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    Some Basic Concepts in Chemistry
    Structure Of Atom
    States Of Matter
    Chemical Equilibrium
    Classification of Elements and Periodicity in Properties
    Hydrogen
    Organic Chemistry: Some basic principles and techniques
    Hydrocarbons
    Solutions
    Redox Reactions
    Chemical Kinetics
    Coordination Compounds
    Haloalkanes And Haloarenes
    Alcohols, Phenols And Ethers
    Chemistry In Everyday Life
    Classification Of Elements
    The S-Block Elements
    Environmental Chemistry
    The Solid State
    Electrochemistry
    Surface Chemistry
    General Principles And Processes Of Isolation Of Elements
    1.

    A metal M forms a volatile carbonyl complex M(CO)xM(CO)_x. 0.525g of this complex is heated in a closed vessel of volume 250 mL at 50∘C50^\circ C. The pressure inside the vessel after complete decomposition of the complex is 746 Torr. If the gas constant R is 0.0821 L atm K−1mol−1K^{-1} mol^{-1}, what is the value of x in the formula M(CO)xM(CO)_x? (Assume the metal M does not contribute significantly to the pressure)

    A

    3

    B

    4

    C

    2

    D

    5

    Question Tags

    📚 Subject:Chemistry
    📑 Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Concentration Methods
    🎓 Ncert Level:Application
    🎯Difficulty :Hard
    ⚡ Time Required :2.5 mins
    🔄Ncert Concepts :Coordination Compounds, Stoichiometry, Ideal Gas Law
    2.

    Which of the following statements regarding the hybridization of [Ni(CN)4]2- and [NiCl4]2- is INCORRECT?

    A

    [Ni(CN)4]2- is square planar and diamagnetic

    B

    [NiCl4]2- is tetrahedral and paramagnetic

    C

    [Ni(CN)4]2- is dsp2 hybridized

    D

    [Ni(CN)4]2- is paramagnetic

    Question Tags

    📚 Subject:Chemistry
    📑 Chapter:Chemical Bonding and Molecular Structure
    🎯Topic:Valence Bond Theory
    🎓 Ncert Level:Analyzing
    🎯Difficulty :Hard
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Valence Bond Theory, Coordination Compounds, Hybridization, Magnetic Properties
    3.

    The complex ion [Fe(H2O)6]2+ is paramagnetic. Which of the following statements correctly explains this observation using Valence Bond Theory?

    A

    H2O is a strong field ligand, resulting in d2sp3 hybridization with no unpaired electrons.

    B

    H2O is a weak field ligand, resulting in sp3d2 hybridization with four unpaired electrons in the 3d orbitals of Fe2+.

    C

    H2O is a strong field ligand, resulting in sp3d2 hybridization with two unpaired electrons in the 3d orbitals of Fe2+.

    D

    H2O is a weak field ligand, resulting in dsp2 hybridization with two unpaired electrons in the 3d orbitals of Fe2+.

    Question Tags

    📚 Subject:Chemistry
    📑 Chapter:Chemical Bonding and Molecular Structure
    🎯Topic:Valence Bond Theory
    🎓 Ncert Level:Application
    🎯Difficulty :Hard
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Valence Bond Theory, Coordination Compounds, Hybridization, Magnetic Properties
    4.

    Which of the following species exhibits dsp2dsp^2 hybridisation and a square planar geometry?

    A

    [Ni(CN)_4]^2-

    B

    [Cu(NH3)_4]^2+

    C

    [Zn(NH3)_4]^2+

    D

    [PdCl4]^2-

    Question Tags

    📚 Subject:Chemistry
    📑 Chapter:Chemical Bonding and Molecular Structure
    🎯Topic:Hybridisation
    🎓 Ncert Level:Remembering
    🎯Difficulty :Hard
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Hybridisation, Coordination compounds, Transition elements
    5.

    According to VBT, the number of unpaired electrons in Ni(CO)4Ni(CO)_4 is:

    A

    0

    B

    1

    C

    2

    D

    3

    Question Tags

    📚 Subject:Chemistry
    📑 Chapter:Chemical Bonding and Molecular Structure
    🎯Topic:Valence Bond Theory
    🎓 Ncert Level:Application
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Valence Bond Theory, Coordination Compounds, Strong Field Ligands, Nickel Tetracarbonyl
    6.

    Which of the following species exhibits dsp2dsp^2 hybridization and is diamagnetic?

    A

    [NiCl4]2−[NiCl_4]^{2-}

    B

    [Ni(CN)4]2−[Ni(CN)_4]^{2-}

    C

    [Fe(CN)6]3−[Fe(CN)_6]^{3-}

    D

    [Co(NH3)6]3+[Co(NH_3)_6]^{3+}

    Question Tags

    📚 Subject:Chemistry
    📑 Chapter:Chemical Bonding and Molecular Structure
    🎯Topic:Hybridisation
    🎓 Ncert Level:Application
    🎯Difficulty :Hard
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Hybridisation, Coordination Compounds, Magnetism
    7.

    What is the IUPAC name for the complex [Cr(NH3)4(H2O)Cl]SO4[Cr(NH_3)_4(H_2O)Cl]SO_4?

    A

    Tetraammineaquachlorochromium(II) sulfate

    B

    Tetraammineaquachlorochromium(III) sulfate

    C

    Aquachlorotetraamminechromium(II) sulfate

    D

    Chlorotetraammineaquachromium(III) sulfate

    Question Tags

    📚 Subject:Chemistry
    📑 Chapter:Organic Chemistry: Some basic principles and techniques
    🎯Topic:Nomenclature
    🎓 Ncert Level:Application
    🎯Difficulty :Hard
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Inorganic Chemistry, IUPAC Nomenclature, Coordination Compounds
    8.

    In the complex ion [Co(NH3)4Cl2]+[Co(NH_3)_4Cl_2]^+, the oxidation number of cobalt and the coordination number of the complex are respectively:

    A

    +2, 4

    B

    +3, 6

    C

    +4, 6

    D

    +2, 6

    Question Tags

    📚 Subject:Chemistry
    📑 Chapter:Redox Reactions
    🎯Topic:Oxidation Number
    🎓 Ncert Level:Application
    🎯Difficulty :Hard
    ⚡ Time Required :1.5 mins
    🔄Ncert Concepts :Oxidation Number, Coordination Compounds
    9.

    The oxidation number of Cr in [Cr(NH3)4Cl2]Cl[Cr(NH_3)_4Cl_2]Cl is:

    A

    +1

    B

    +2

    C

    +3

    D

    +4

    Question Tags

    📚 Subject:Chemistry
    📑 Chapter:Redox Reactions
    🎯Topic:Oxidation Number
    🎓 Ncert Level:Application
    🎯Difficulty :Hard
    ⚡ Time Required :1.5 mins
    🔄Ncert Concepts :Oxidation Number, Coordination Compounds
    10.

    Find the oxidation state of Fe in brown ring complex [Fe(H2O)5(NO)]SO4[Fe(H_2O)_5(NO)]SO_4:

    A

    +1

    B

    +2

    C

    +3

    D

    +4

    Question Tags

    📚 Subject:Chemistry
    📑 Chapter:Redox Reactions
    🎯Topic:Oxidation Number
    🎓 Ncert Level:Application
    🎯Difficulty :Hard
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Oxidation Number, Coordination Compounds, Nitrosyl Complexes

    Showing 1 to 10 of 212 entries

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