Multiple choice

Ballast best suited to steel sleepers is

  1. sand

  2. gravel

  3. quartzite

  4. All the above

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Quartzite ballast is best suited for steel sleepers because of its high hardness, angular particle shape, and excellent interlocking properties. Steel sleepers can crush softer ballast materials like sand or gravel, but quartzite maintains its integrity and provides stable support even under steel sleeper loads.