Channelization characterized by orthogonal spectra is called as

Channelization characterized by orthogonal spectra is called as Correct Answer Frequency division multiplexing

Channelization characterized by orthogonal wave-forms is called as time division multiplexing and those characterized by orthogonal spectra is called as frequency division multiplexing.

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Statement I: The phase of a substance is characterized by its distinct molecular arrangement which is homogeneous throughout and is separated from the others by easily identifiable boundary surfaces. Statement II: Phase change is not characterized on molecular structure and/or behaviour of the different phases.