Question

Red colour of Tr.Card.Co is due to the presence of-
(A) zinc oxide. (B) Red oxide
(C) Amaranth. (D) Cardamom

Answer 1

Answer:

Sodium extract gives blood red colour

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Answer 2

Answer:

The correct answer to this question is Red oxide

Explanation:

Given - Red color of Tr. Card. Co

To Find - Choose the correct option of the Red color of Tr. Card. Co

Red oxide is the Red color of Tr. Card. Co

On ferrous metal surfaces exposed to moisture and air, red oxide metal primer serves as a protective coating or as a pre-treatment. Primers are used on rusted surfaces before topcoats are applied on gates, railings, and outdoor equipment.

The main coloring ingredient of red ochers like Indian red, Terra Pozzuoli, Venetian red, etc. is red iron oxide. The main component of these colors is the mineral hematite, which is combined in different amounts with other minerals including clay, chalk, and quartz.

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