Tell whether each of the following properties describes a homogeneous mixture, a solution, a het...

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Tell whether each of the following properties describes a homogeneous mixture, a solution, a heterogeneous mixture, a compound or an element.
(i) A homogeneous liquid which leaves a solid residue on boiling.
(ii) A cloudy liquid which after some time appears more cloudy towards the bottom.
(iii) A colourless liquid which boils at a definite temperature and can be decomposed into simpler substances.
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