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Q.

which of the following statements is not true?

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a

The colour of a dye is the colour of the light it reflects

b

The colour of a dye is the colour of the light it absorbs

c

Blue is the complimentary colour of yellow

d

-CO2H is an auxochrome.

answer is B.

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Detailed Solution

The colour of the dye is the colour of the light it absorbs is not true. The color of a dye is dependent upon the ability of the substance to absorb light within the visible region of the electromagnetic spectrum (380-750 nm).
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