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Which of the following is equal to 1 kilolitre?

  • A.1000 millilitres
  • B.100 dm³
  • C.1 dm³
  • D.1000 dm³

Answer: D

Work through the metric chain of volume units.

\[ 1 \text{ litre} = 1 \text{ dm}^{3} \]

\[ 1 \text{ kilolitre} = 1000 \text{ litres} = 1000 \text{ dm}^{3} \]

That is also 1 cubic metre, since \( 1 \text{ m}^{3} = 1000 \text{ dm}^{3} \). The 1000 millilitres on offer is only one litre - a thousandth of the answer.

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