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KCET Solutions — practice questions — page 3

Explore 63 free Solutions questions in KCET Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Showing questions 61–63 of 63.

Three of these are wrong. Find the one that holds.Read the answer and worked solution →Flip and pair: measure with its denominatorRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →

Worked practice questions

Three of these are wrong. Find the one that holds.

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Questions
  1. Question
    Three of these statements about molarity are false.
    Choices
    1. Item
      Moles of solute per litre of solution
      Correct
      Yes
    2. Explanation
      That defines MOLALITY.
      Item
      Moles of solute per kg of solvent
    3. Explanation
      It uses a volume, which expands when warmed.
      Item
      It is temperature-independent
    4. Explanation
      It counts moles of solute.
      Item
      It counts grams, not moles
Each trap swaps the denominator. Source: syllabus Chemistry, Ch 1 Solutions.

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Flip and pair: measure with its denominator

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Matching pairs
  1. A
    Molarity
    B
    litre of solution
  2. A
    Molality
    B
    kilogram of solvent
  3. A
    Mole fraction
    B
    total moles present
  4. A
    Colligative
    B
    number of solute particles
What each one divides by. Source: syllabus Chemistry, Ch 1 Solutions.

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Spot the one that does not belong

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Questions
  1. Items
    1. Molarity
    2. Mass of solvent
    3. Volume of solution
    Odd item
    Mass of solvent
  2. Items
    1. Molality
    2. Mass of solvent
    3. Litre of solution
    Odd item
    Litre of solution
  3. Items
    1. Molar mass of solvent
    2. Osmotic pressure
    3. Colligative
    Odd item
    Molar mass of solvent
One measure uses a different basis. Source: syllabus Chemistry, Ch 1 Solutions.

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