Hydrocarbons

Hydrocarbons Quiz

Spec 3.10.1.2 · Oxford AQA IGCSE Chemistry: Quiz

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5 questions, one answer each

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  1. 1. What is the general formula for an alkane?

    • A. CnH2n
    • B. CnH2n+2
    • C. CnHn
    • D. CnH2n-2

  2. 2. Which of these is the molecular formula for ethane?

    • A. CH4
    • B. C2H6
    • C. C3H8
    • D. C2H4

  3. 3. As hydrocarbon chain length increases, what happens to viscosity?

    • A. It decreases
    • B. It stays the same
    • C. It increases
    • D. It becomes zero

  4. 4. Crude oil is separated into fractions by fractional distillation. What property allows this separation to work?

    • A. Different colours
    • B. Different densities only
    • C. Different boiling points
    • D. Different flammability only

  5. 5. A student compares two hydrocarbon fractions: one collected near the top of the fractionating column and one near the bottom. Which statement is correct?

    • A. The top fraction has longer chains and a higher boiling point
    • B. The bottom fraction has shorter chains and is more flammable
    • C. The top fraction has shorter chains and is more flammable
    • D. The bottom fraction has shorter chains and a lower viscosity

Quiz