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JEE Advanced 2018 Chemistry Quiz
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JEE Advanced 2018 Chemistry Quiz

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Questions and Answers

Which hybrid orbital type is associated with the complex [FeF6]4−?

  • dsp2 (correct)
  • d2sp3
  • sp3
  • sp3d2
  • The coordination compound [Cr(NH3)6]3+ exhibits sp3 hybridization.

    False

    What type of hybridization do you expect in Ni(CO)4?

    sp3d2

    The hybridization for the complex [Ti(H2O)3Cl3] is _______.

    <p>dsp2</p> Signup and view all the answers

    Match the following compounds with their hybridizations:

    <p>[FeCl4]2− = sp3 [Ni(CN)4]2− = dsp2 [Cr(NH3)6]3+ = d2sp3 Ni(CO)4 = sp3d2</p> Signup and view all the answers

    Which statement about the complex [Co(en)(NH3)3(H2O)]3+ is correct?

    <p>It has two geometrical isomers.</p> Signup and view all the answers

    Mn2+ shows a characteristic blue colour in the flame test.

    <p>False</p> Signup and view all the answers

    What are the products of aniline reacting with mixed acid at 288 K?

    <p>P, Q, R</p> Signup and view all the answers

    Cu2+ shows the formation of precipitate by passing ______ in acidic medium.

    <p>H2S</p> Signup and view all the answers

    Match the following with their characteristics regarding flame tests:

    <p>Mn2+ = Characteristic green colour Cu2+ = Characteristic blue colour Co2+ = Characteristic pink colour Na+ = Characteristic yellow colour</p> Signup and view all the answers

    Which of the following ions is only capable of forming a precipitate when H2S is passed in faintly basic medium?

    <p>Mn2+</p> Signup and view all the answers

    Cu/Cu2+ has a lower reduction potential than Mn/Mn2+.

    <p>False</p> Signup and view all the answers

    What is the expected product percentages identified in the reaction of aniline with mixed acid?

    <p>P: 51%, Q: 47%, R: 2%</p> Signup and view all the answers

    If bidentate ‘en’ is replaced by two _______ ligands, the complex will have three geometrical isomers.

    <p>cyanide</p> Signup and view all the answers

    Which order of migratory aptitude is correct?

    <p>aryl &gt; alkyl &gt; hydrogen</p> Signup and view all the answers

    The reaction products in LIST-I can only be matched with one option from LIST-II.

    <p>False</p> Signup and view all the answers

    What is the significance of the degree of dissociation (α) in the context of weak acids and bases?

    <p>It indicates the extent to which a weak acid or base ionizes in solution.</p> Signup and view all the answers

    In the context of aromatic substitution reactions, migratory aptitude is typically classified in the order of __________.

    <p>aryl &gt; alkyl &gt; hydrogen</p> Signup and view all the answers

    Match each topic to its relevant description:

    <p>Kinetics Of Chemical Reactions = Study of reaction rates and factors affecting them Carbohydrate Structures = Classification of sugars based on their functionality Coordination Chemistry = Study of metal complexes and ligands Flame Tests In Inorganic Chemistry = Identification of metal ions through flame color</p> Signup and view all the answers

    Study Notes

    Reaction Migration Aptitude

    • Migratory aptitude order: aryl > alkyl > hydrogen
    • Specific options given for matching reactions to products in various questions, highlighting different product combinations.

    Reaction and Product Matching

    • JEE (Advanced) assesses reactions through a matching format, requiring correct identification of major products for specified reactions.
    • Product pairs under different scenarios listed, demonstrating the variability in reaction outcomes.

    Dilution and Acid-Base Equilibria

    • The impact of dilution on hydrogen ion concentration ([H+]) is explored.
    • Weak acid and weak base dissociation degree (α) play a crucial role in understanding concentration effects during dilution.

    Hybrid Orbital Matching

    • Matching hybrid orbitals (e.g., dsp2, sp3, sp3d2, d2sp3) to their corresponding coordination complexes.
    • Different complexes such as [FeF6]4− and [Cr(NH3)6]3+ showcase various coordination geometries and hybridization.

    Isomerism in Complexes

    • Geometrical isomers: the complex [Co(en)(NH3)3(H2O)]3+ has two geometrical isomers.
    • Replacement of bidentate 'en' ligand with cyanide can increase the geometrical isomers to three.
    • Complex demonstrates paramagnetism and different light absorption properties compared to other complexes.

    Distinguishing Metal Ions

    • Mn2+ shows characteristic green color in flame tests.
    • Cu2+ forms precipitate with H2S in acidic medium, differing from Mn2+ behavior.
    • Mn2+ can also produce precipitate when H2S is passed in faintly basic medium, indicating differing reactivity.

    Reaction Products of Aniline

    • Aniline's reaction with mixed acids yields three distinct products: P (51%), Q (47%), and R (2%) at specific conditions (288 K).

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    Related Documents

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    Description

    Test your knowledge on the order of migratory aptitude in Chemistry as per the JEE Advanced 2018 exam. This quiz will assess your understanding of various organic reactions and the stability of intermediates. Choose the correct options based on your comprehension of aryl, alkyl, and hydrogen migratory potentials.

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