17396. The slag from the blast furnace

By Admin / September 13, 2025

is used as a ballast for rail road

is mixed with tar for road making

consists of calcium, aluminium and ferrous silicates

all of the above

✅ The correct answer is option D.

17394. A column of length (l) with both ends fixed may be considered as equivalent to a column of length __________ with both ends hinged.

17398. When filing soft metals, the file teeth are clogged with minute particles of metal. The file should be cleaned by

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