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According to the keyed answer, Mercury is smallest.
Editor note: Pluto complicates the list; options left unchanged.
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Hypo / sodium thiosulphate dissolves undeveloped silver halide.
So the correct answer is Sodium thiosulphate.
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Proxima Centauri is the nearest known star to the Sun.
So the correct answer is Proxima Centurai.
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According to the keyed exam answer, intermediates equal capital goods.
Editor note: standard definition differs (option B); options left unchanged.
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Valence electrons are loosely bound and can drift as current.
So the correct answer is Loosely bound.
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At fixed temperature, sound speed is nearly independent of pressure.
So the correct answer is Pressure of air.
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