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Experimental Techniques

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

Apparatus for measurement

Subtopic

Apparatus for measurement under Experimental Techniques for Grade 11 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What is the primary function of the apparatus shown in the diagram?

    A.

    To measure the mass of a gas produced

    B.

    To heat a liquid to its boiling point

    C.

    To collect and measure the volume of a gas

    D.

    To filter solid impurities from a solution

  2. 2.

    Which apparatus is used to measure the temperature change during an exothermic reaction?

    A.

    Manometer

    B.

    Barometer

    C.

    Thermometer

    D.

    Anemometer

  3. 3.

    A student needs to measure exactly 25.025.0 cm3cm^3 of an aqueous solution for a titration. Which apparatus should be used?

    A.

    Pipette

    B.

    Beaker

    C.

    Measuring cylinder

    D.

    Test tube

Download the worksheet for Experimental Techniques - Apparatus for measurement to practice offline. It includes additional chapter-level practice questions.

Chromatography

Subtopic

Chromatography under Experimental Techniques for Grade 11 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    A student performs chromatography on a sample of food coloring. After the process, only one spot is visible on the chromatogram. What can be concluded about the food coloring?

    A.

    It is a mixture of many different dyes.

    B.

    The solvent used was incorrect.

    C.

    The sample is a pure substance.

    D.

    The RfR_f value is exactly 1.0.

  2. 2.

    What is the formula used to calculate the RfR_f value of a substance?

    A.

    Rf=distance moved by solventdistance moved by substanceR_f = \frac{\text{distance moved by solvent}}{\text{distance moved by substance}}

    B.

    Rf=distance moved by substancedistance moved by solventR_f = \frac{\text{distance moved by substance}}{\text{distance moved by solvent}}

    C.

    Rf=distance moved by substance×distance moved by solventR_f = \text{distance moved by substance} \times \text{distance moved by solvent}

    D.

    Rf=distance moved by substance+distance moved by solventR_f = \text{distance moved by substance} + \text{distance moved by solvent}

  3. 3.

    Which of the following labels correctly identifies the component labeled 'X' in the chromatography setup shown?

    A.

    Solvent front

    B.

    Stationary phase

    C.

    Baseline

    D.

    Locating agent

Download the worksheet for Experimental Techniques - Chromatography to practice offline. It includes additional chapter-level practice questions.

Methods of purification (Filtration, Crystallisation, Distillation)

Subtopic

Methods of purification (Filtration, Crystallisation, Distillation) under Experimental Techniques for Grade 11 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following techniques is used to obtain a pure sample of copper(II) sulfate crystals from a saturated solution of CuSO4CuSO_4?

    A.

    Crystallisation

    B.

    Fractional distillation

    C.

    Filtration

    D.

    Chromatography

  2. 2.

    During the process of simple distillation, what is the primary function of the Liebig condenser?

    A.

    To increase the rate of evaporation

    B.

    To filter out insoluble impurities

    C.

    To cool the vapor so it turns back into a liquid

    D.

    To measure the temperature of the boiling liquid

  3. 3.

    In a filtration setup, what is the term used for the solid material that remains on the filter paper?

    A.

    Distillate

    B.

    Filtrate

    C.

    Solvent

    D.

    Residue

Download the worksheet for Experimental Techniques - Methods of purification (Filtration, Crystallisation, Distillation) to practice offline. It includes additional chapter-level practice questions.

Experimental Techniques - Grade 11 Chemistry (IGCSE) | Krit.club