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While preparing whitewash, up to how many grams of ultra-marine blue is added per kg of lime?

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in Construction & Building Materials by (190k points)
While preparing whitewash, up to how many grams of ultra-marine blue is added per kg of lime?

(a) 3 gm

(b) 30 gm

(c) 200 gm

(d) 300 gm

The question was posed to me by my school principal while I was bunking the class.

Question is from Distempering in portion Painting, Varnishing, Distempering, etc of Construction & Building Materials

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Best answer
Right option is (a) 3 gm

The explanation: While preparing whitewash, up to three grams of ultra-marine blue is added per kg of lime. It is usually added to the last two coats of the solution. Ultra-marine blue is a blue colored pigment of sodium aluminosilicate containing sulphur.

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