Q
Which of the following statements regarding ballast materials are correct ?
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A
A. Brick ballast has poor drainage characteristics.
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B
B. Coal ash is not used as ballast with steel or cast iron sleepers.
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C
C. Gravel ballast gives better performance on soft formation.
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D
D. Sand ballast causes excessive wear on top of rail
Correct Answer:
D. D. Sand ballast causes excessive wear on top of rail
