The night before the exam, sleep. A rested mind recalls what a tired one has only read.

Pipes and Cisterns — quick quiz

5 RRB Group D-pattern questions on Pipes and Cisterns. Instant scoring and solutions, no signup — see where you stand in a few minutes.

Question 1 of 5

Easy

A pipe can fill a tank in 12 hours. Due to a leak at the bottom, it takes 15 hours to fill the tank. How long will the leak alone take to empty the full tank?