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CDS p-Block Elements (Groups 15-18) — practice questions

Explore 51 free p-Block Elements (Groups 15-18) questions in CDS Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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p-Block Elements (Groups 15-18) questions and exercises with answers

Showing questions 1–30 of 51.

JEEMAIN · Chemistry · Spot the Error — Chemistry BasicsRead the answer and worked solution →Order the atomic models as they were proposedRead the answer and worked solution →Match each scientist to their modelRead the answer and worked solution →Match each model to what it could NOT explainRead the answer and worked solution →True or false: Rutherford's modelRead the answer and worked solution →True or false: Bohr's modelRead the answer and worked solution →Complete the reason Bohr's model failsRead the answer and worked solution →Which model does this belong to?Read the answer and worked solution →Match each quantum number to what it is calledRead the answer and worked solution →True or false: the quantum mechanical modelRead the answer and worked solution →Order the structure: from atom down to electronRead the answer and worked solution →Complete the (n + l) ruleRead the answer and worked solution →True or false: orbital energiesRead the answer and worked solution →Match each rule to what it forbids or requiresRead the answer and worked solution →Tap every statement Hund's rule requiresRead the answer and worked solution →The fundamental particlesRead the answer and worked solution →Assertion and reasonRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Three of these are wrong. Find the one that holds.Read the answer and worked solution →Which principle is being described?Read the answer and worked solution →Flip and pair: symbol with meaningRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →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 →Match each scientist to their contributionRead the answer and worked solution →Ionic or covalent?Read the answer and worked solution →Complete the driver of bond formationRead the answer and worked solution →

Worked practice questions

JEEMAIN · Chemistry · Spot the Error — Chemistry Basics

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Questions
  1. Statement parts
    1. The
    2. atomic
    3. number
    4. equals
    5. the
    6. number
    7. of
    8. neutrons
    9. .
    Correction
    protons
    Incorrect part
    neutrons
  2. Statement parts
    1. Isotopes
    2. have
    3. the
    4. same
    5. mass
    6. number
    7. but
    8. different
    9. atomic
    10. numbers
    11. .
    Correction
    atomic
    Incorrect part
    mass
  3. Statement parts
    1. Electrons
    2. occupy
    3. orbitals
    4. starting
    5. from
    6. the
    7. highest
    8. energy
    9. level
    10. .
    Correction
    lowest
    Incorrect part
    highest
  4. Statement parts
    1. The
    2. s
    3. orbital
    4. can
    5. hold
    6. up
    7. to
    8. six
    9. electrons
    10. .
    Correction
    two
    Incorrect part
    six
Instructions
Tap the incorrect word in each statement.

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Order the atomic models as they were proposed

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Steps
  1. Dalton: the atom is the ultimate indivisible particle
  2. Thomson: a sphere of positive charge with electrons embedded
  3. Rutherford: a tiny dense nucleus with electrons revolving around it
  4. Bohr: electrons in fixed circular orbits of definite energy
  5. Schrodinger: a wave equation giving energy states and orbitals
syllabus walks through them in this order, each answering what the previous one could not: Dalton 1808, Thomson 1898, Rutherford 1909, Bohr 1913, Schrodinger 1926. Source: syllabus Chemistry Part I, Ch 2 Structure of Atom.

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Match each scientist to their model

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Matching pairs
  1. Left
    Dalton
    Right
    atom as the ultimate indivisible particle
  2. Left
    Thomson
    Right
    electrons embedded in a sphere of positive charge
  3. Left
    Rutherford
    Right
    a tiny positively charged nucleus at the centre
  4. Left
    Bohr
    Right
    electrons confined to certain circular orbits
  5. Left
    Schrodinger
    Right
    a wave equation for electron distribution
Five models, five names. Source: syllabus Chemistry Part I, Ch 2 Structure of Atom.

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