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BITSAT Aldehydes Ketones — practice questions — page 2

Explore 34 free Aldehydes Ketones questions in BITSAT Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Aldehydes Ketones questions and exercises with answers

Showing questions 31–34 of 34.

Assertion and reason: structureRead the answer and worked solution →Flip and pair: parameter with what it measuresRead the answer and worked solution →Match each carbonyl testRead the answer and worked solution →Which one does NOT belong?Read the answer and worked solution →

Worked practice questions

Assertion and reason: structure

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Questions
  1. Reason
    Length, angle, enthalpy, order and polarity all shape how it behaves.
    Verdict
    Both are true; the reason explains the assertion.
    Assertion
    Bond parameters matter for a compound's properties.
  2. Reason
    More shared pairs pull the bonded atoms closer together.
    Verdict
    Both are true; the reason explains the assertion.
    Assertion
    A triple bond is shorter than a single bond.
  3. Reason
    Several structures are written on one skeletal arrangement.
    Verdict
    The assertion is false and the reason is true.
    Assertion
    Resonance means the molecule oscillates.
The reason must genuinely explain the assertion. Source: syllabus Chemistry, Ch 4 Chemical Bonding and Molecular Structure.

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Flip and pair: parameter with what it measures

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Matching pairs
  1. A
    Bond length
    B
    distance between bonded atoms
  2. A
    Bond angle
    B
    angle between two bonds
  3. A
    Bond enthalpy
    B
    energy of the bond
  4. A
    Bond order
    B
    number of shared pairs
  5. A
    Bond polarity
    B
    how evenly the pair is shared
The five bond parameters. Source: syllabus Chemistry, Ch 4 Chemical Bonding and Molecular Structure.

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Match each carbonyl test

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Matching pairs
  1. Left
    Tollens test
    Right
    Aldehyde, shown by a silver mirror
  2. Left
    Fehling test
    Right
    Aliphatic aldehyde, a red precipitate
  3. Left
    Iodoform test
    Right
    A methyl ketone or ethanol group
  4. Left
    Cannizzaro
    Right
    An aldehyde with no alpha hydrogen
Instructions
Tap a test on the left, then tap what it detects.
_Source: syllabus Chemistry Aldehydes Ketones Carboxylic Acids, Aldehydes_

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