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Comment on the statement that colloid is...

Comment on the statement that colloid is not a substance but a state of substance.

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Colloid is not a substance but a state of substance is a true statement because some substances which are crystalloids under certain conditions can be colloids under the other, e.g. NaCl is a crystalloid in aqueous medium, but when mixed with benzene, it behaves as a colloid. It is the size of the particles of that matter, i.e. the state in which the substance exists. If size lies in range of 1-1000 nm, it is in the colloidal state. So, above statement is true.
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    A
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