| Q.67 | In a railway track, ballast is an important layer. The ballast is treated as undersized and rejected, if_______________. | |
| Ans | 1. the retention on a 40 mm sieve is less than 40% and the retention on a 20 m sieve is less than 98% | |
| 2. the retention on a 40 mm sieve is less than 50% and the retention on a 20 m sieve is less than 98% | ||
| 3. the retention on a 40 mm sieve is more than 40% and the retention on a 20 m sieve is less than 98% | ||
| 4. the retention on a 40 mm sieve is less than 45% and the retention on a 20 m sieve is less than 98% |
Correct Ans Provided: 1
