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Indian Navy AA (Artificer Apprentice) JEE Main 2023 Mixed — practice questions — page 2

Explore 35 free JEE Main 2023 Mixed questions in Indian Navy AA (Artificer Apprentice) Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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JEE Main 2023 Mixed questions and exercises with answers

Showing questions 31–35 of 35.

Tap every statement true of the Schrodinger modelRead the answer and worked solution →Reading the models backRead the answer and worked solution →Assertion and reason: filling orbitalsRead the answer and worked solution →True or false: shells and subshellsRead the answer and worked solution →Complete the two filling rulesRead the answer and worked solution →

Worked practice questions

Tap every statement true of the Schrodinger model

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Questions
  1. Items
    1. Text
      Uses a wave equation
      Matches the category
      Yes
    2. Text
      Incorporates wave-particle duality
      Matches the category
      Yes
    3. Text
      Gives quantised energy states and wave functions
      Matches the category
      Yes
    4. Text
      Places electrons in definite circular orbits
      Matches the category
      No
    5. Text
      Ignores the uncertainty principle
      Matches the category
      No
    Category
    True of the quantum mechanical model
It solved what Bohr could not, and did so without extra assumptions. Source: syllabus Chemistry Part I, Ch 2 Structure of Atom.

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Reading the models back

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Questions
  1. Question
    Who proposed that the atom is indivisible?
    Choices
    1. Dalton
    2. Bohr
    3. Schrodinger
    Correct choice
    Dalton
  2. Question
    Whose experiment revealed the nucleus?
    Choices
    1. Thomson
    2. Rutherford
    3. Hund
    Correct choice
    Rutherford
  3. Question
    Who restricted electrons to certain orbits?
    Choices
    1. Dalton
    2. Pauli
    3. Bohr
    Correct choice
    Bohr
  4. Question
    Whose equation describes electron distribution in space?
    Choices
    1. Schrodinger
    2. Rutherford
    3. Thomson
    Correct choice
    Schrodinger
Straight recall of who proposed what. Source: syllabus Chemistry Part I, Ch 2 Structure of Atom.

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Assertion and reason: filling orbitals

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Questions
  1. Reason
    Pauli forbids two electrons in an atom sharing all four quantum numbers.
    Verdict
    Both are true; the reason explains the assertion.
    Assertion
    An orbital holds at most two electrons.
  2. Reason
    Hund's rule of maximum multiplicity requires single occupancy first.
    Verdict
    Both are true; the reason explains the assertion.
    Assertion
    Electrons spread out before pairing up in a subshell.
  3. Reason
    Rutherford discovered the nucleus by alpha-particle scattering.
    Verdict
    Both are true; the reason does not explain the assertion.
    Assertion
    Orbitals fill in order of increasing energy.
The last round pairs two true halves that do not explain one another. Source: syllabus Chemistry Part I, Ch 2 Structure of Atom.

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