| Q.13 | Which of the following is the pipe network for water supply; in which, a closed ring of main pipes, is formed around/on the periphery of the area to be served? | |
| Ans | 1. Tree system. | |
| 2. Radial system. | ||
| 3. Recticulation system. | ||
| 4. Circular system. |
Correct Ans Provided: 4