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Which of the below is not an example of a base?(a) White lead(b) Cobalt(c) Zinc oxide(d) Red leadThis question was posed to me in a job interview.This question is from Painting topic in chapter Building Construction of Basic Civil Engineering |
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Answer» CORRECT OPTION is (b) Cobalt To elaborate: Cobalt is used as a drier. It absorbs oxygen from surroundings and hardens the paints. White lead, zinc oxide and red lead are all examples of a base. They have BINDING PROPERTIES and form an opaque coat. |
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