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Measurement and Data Processing

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Uncertainties and errors in measurement

Subtopic

Uncertainties and errors in measurement under Measurement and Data Processing for Grade 12 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    How should a measurement of 5.00 g5.00\text{ g} be reported if the balance has an absolute uncertainty of ±0.01 g\pm 0.01\text{ g}?

    A.

    5 g5\text{ g}

    B.

    5.0 g5.0\text{ g}

    C.

    5.00 g5.00\text{ g}

    D.

    5.000 g5.000\text{ g}

  2. 2.

    A student finds the experimental value of RR to be 8.41 J K−1 mol−18.41\text{ J K}^{-1}\text{ mol}^{-1}. If the accepted value is 8.31 J K−1 mol−18.31\text{ J K}^{-1}\text{ mol}^{-1}, what is the percentage error?

    A.

    1.2%1.2\%

    B.

    1.1%1.1\%

    C.

    0.10%0.10\%

    D.

    12%12\%

  3. 3.

    Which of the following is the most appropriate instrument to measure exactly 25.00 cm325.00\text{ cm}^3 of a solution?

    A.

    50 cm350\text{ cm}^3 Beaker

    B.

    50 cm350\text{ cm}^3 Measuring cylinder

    C.

    25 cm325\text{ cm}^3 Pipette

    D.

    100 cm3100\text{ cm}^3 Conical flask

Download the worksheet for Measurement and Data Processing - Uncertainties and errors in measurement to practice offline. It includes additional chapter-level practice questions.

Graphical techniques

Subtopic

Graphical techniques under Measurement and Data Processing for Grade 12 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    When a graph of temperature (TT) in ∘C^{\circ}C is plotted against volume (VV) for an ideal gas, where does the line intercept the x-axis?

    A.

    At 0∘C0^{\circ}C

    B.

    At 100∘C100^{\circ}C

    C.

    At −273∘C-273^{\circ}C

    D.

    At 273∘C273^{\circ}C

  2. 2.

    Which of the following describes 'interpolation'?

    A.

    Predicting a value outside the range of measured data

    B.

    Finding the slope of a tangent to a curve

    C.

    Estimating a value within the range of measured data points

    D.

    Identifying the intercept on the y-axis

  3. 3.

    If a graph of yy vs xx is a straight line through the origin with a gradient of 22, what is the equation of the line?

    A.

    y=x+2y = x + 2

    B.

    y=2xy = 2x

    C.

    y=2x+1y = 2x + 1

    D.

    y=x/2y = x/2

Download the worksheet for Measurement and Data Processing - Graphical techniques to practice offline. It includes additional chapter-level practice questions.

Spectroscopic identification of organic compounds

Subtopic

Spectroscopic identification of organic compounds under Measurement and Data Processing for Grade 12 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following radiation types has the shortest wavelength and thus the highest energy used in spectroscopic identification?

    A.

    Radio waves

    B.

    Infrared

    C.

    Ultraviolet

    D.

    Microwaves

  2. 2.

    How many 1^{1}H NMR signals are observed for propane (CH3CH2CH3CH_{3}CH_{2}CH_{3})?

    A.

    1

    B.

    2

    C.

    3

    D.

    8

  3. 3.

    In IR spectroscopy, which bond corresponds to the range 1050−1410 cm−11050-1410\text{ cm}^{-1}?

    A.

    C=OC=O

    B.

    C−OC-O

    C.

    C=CC=C

    D.

    C≡CC \equiv C

Download the worksheet for Measurement and Data Processing - Spectroscopic identification of organic compounds to practice offline. It includes additional chapter-level practice questions.

Measurement and Data Processing - Grade 12 Chemistry (IB) | Krit.club