+1 vote
ago in Construction & Building Materials by (188k points)
Excess of iron oxide in the bricks makes them _________ in colour.

(a) Red

(b) Yellow

(c) Dark blue

(d) White

The question was posed to me in exam.

The question is from Bricks topic in division Glass, Lime, Clay Products & Bricks of Construction & Building Materials

1 Answer

+1 vote
ago by (1.2m points)
selected ago by
Best answer
The correct answer is (c) Dark blue

Explanation: Excess of iron oxide in the bricks makes them dark blue or blackish in colour. However, if its quantity is comparatively less, the bricks will turn yellowish in colour.

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