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The diagram b...

Question

The diagram below shows an experiment in which: [3 MARKS]
(a) Leaf A was coated with grease on both surfaces.
(b) Leaf B was coated with grease on the lower surface.
(c) Leaf C was coated with grease on the upper surface.
(d) Leaf D was left without any application of grease.

Answer the following:
(i) Which leaf dries first?
(ii) Which leaf dries last?
(iii) Which leaf does not show any change?

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Solution

Each Part: 1 Mark
(i) Leaf D dies first.
(ii) Leaf B dries last.
(iii) Leaf A does not show any change.

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