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______________________ is an oxide of zinc and it forms the base of all zinc Paints.

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______________________ is an oxide of zinc and it forms the base of all zinc Paints.

(a) Zinc white

(b) Iron oxide

(c) Aluminium powder

(d) Lithopone

I got this question in an online interview.

This key question is from Ingredients of an Oil Borne Paint topic in chapter Painting, Varnishing, Distempering, etc of Construction & Building Materials

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Correct option is (a) Zinc white

Best explanation: Oxide of Zinc or zinc oxide is smooth, transparent and non-poisonous. It is not discoloured when exposed to the sulphur vapour. It has less bulk and hence it is costly. It is less durable and it is difficult to work.

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