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Building Materials

Q1: The commonly used colour pigment in paints, is

A ambers

B carbon black

C iron oxide

D lamp black

E all the above.

ANS:E - all the above.

A pigment is a material that changes the color of reflected or transmitted light as the result of wavelength-selective absorption. This physical process differs from fluorescence, phosphorescence, and other forms of luminescence, in which a material emits light.



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