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WBJEE Aldehydes, Ketones and Carboxylic Acids — practice questions — page 2

Explore 51 free Aldehydes, Ketones and Carboxylic Acids questions in WBJEE Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Aldehydes, Ketones and Carboxylic Acids questions and exercises with answers

Showing questions 31–51 of 51.

Complete the definition of resonanceRead the answer and worked solution →Tap every bond parameter the chapter namesRead the answer and worked solution →True or false: ionic solidsRead 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 →Bonded pair or lone pair?Read the answer and worked solution →Flip and pair: term with meaningRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Order the reasoning: why resonance is neededRead the answer and worked solution →Reading the definitions backRead the answer and worked solution →True or false: what bond parameters affectRead the answer and worked solution →Bond parameters in useRead the answer and worked solution →Which parameter answers this?Read the answer and worked solution →True or false: resonanceRead the answer and worked solution →Order the steps: draw a Lewis structureRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →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

Complete the definition of resonance

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Missing parts
  1. Answer
    skeletal
    Choices
    1. skeletal
    2. ionic
    3. crystal
  2. Answer
    resonance
    Choices
    1. resonance
    2. hybridisation
    3. polarity
  3. Answer
    hybrid
    Choices
    1. hybrid
    2. lattice
    3. pair
Complete the statement
When one Lewis structure will not describe a molecule accurately, several structures on the same {0} structure are written. This is called {1}, and the contributing forms together make the resonance {2}.
Resonance is a description of the model's limits, not of a real oscillation. Source: syllabus Chemistry, Ch 4 Chemical Bonding and Molecular Structure.

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Tap every bond parameter the chapter names

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Questions
  1. Items
    1. Text
      Bond length
      Matches the category
      Yes
    2. Text
      Bond angle
      Matches the category
      Yes
    3. Text
      Bond enthalpy
      Matches the category
      Yes
    4. Text
      Bond order
      Matches the category
      Yes
    5. Text
      Bond colour
      Matches the category
      No
    6. Text
      Bond mass
      Matches the category
      No
    Category
    A bond parameter named in this chapter
Five parameters affect the properties of a compound. Source: syllabus Chemistry, Ch 4 Chemical Bonding and Molecular Structure.

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True or false: ionic solids

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Questions
  1. Statement is true
    Yes
    Statement
    An ionic compound forms a three-dimensional crystal lattice.
  2. Statement is true
    Yes
    Statement
    The lattice has a balance of positive and negative charge.
  3. Statement is true
    Yes
    Statement
    It is stabilised by the enthalpy of lattice formation.
  4. Statement is true
    No
    Statement
    An ionic compound exists as separate small molecules.
  5. Statement is true
    Yes
    Statement
    The ions sit in an ordered arrangement.
An ionic compound is a lattice, not a molecule. Source: syllabus Chemistry, Ch 4 Chemical Bonding and Molecular Structure.

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