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Different substances are classified as:
I) Pure substances

II) Homogeneous mixture

III) Heterogeneous mixture

A few common substances are listed below:

i) Air, ii) Graphite, iii) Gasoline, iv) Diamond, v) Tap water, vi) Iron vii) Sodium chloride viii) Iodized salt ix) Brass

x) Oil and water

Which of the following represents the correct classification of the given substances ?

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i, iv, vii, ix; II

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ii, v, viii; III

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iii, vi, x

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ii, iv, vi, vii; II

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i, iii, v, viii, ix; III

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none of these represents the correct match

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ii, vi, ix; II

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i, v, vii; III

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iii, iv, viii, x

answer is B.

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Detailed Solution

Group – I : Pure substance - Graphite, Diamond, Iron, Sodium chloride

Group – II : Homogeneous mixture - Air, Gasoline, Tap water, Iodized salt, Brass

Group – III : Heterogeneous mixture - Oil and water.

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