The cast iron when heated to red heat with powdered red haematite in an oven for increasing its toughness, is converted to
A. Grey cast iron
B. White cast iron
C. Mottled cast iron
D. Toughed cast iron
Answer: Option C
Related Questions on Building Materials
For the manufacture of plywood, veneers are placed so that grains of adjacent veneers
A. Run at right angles
B. Parallel
C. Inclined at 45°
D. Inclined at 60°
The most important constituent of an oil paint, is
A. Thinner
B. Vehicle
C. Pigment
D. All the above
Stucco paints are suitable for
A. Stone masonry
B. Brick walls
C. Both (A) and (B)
D. Neither (A) nor (B)
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