Quiz : 21-01-2026 Q. A train leaves Hyderabad at 01:15 pm on Friday and reaches Chennai at 07:30 am on Saturday. The duration of the journey is: Ans : Total journey time = 10:45 + 7:30 = 18 hours 15 minutes Answer: 18 hours 15 minutes Quiz : 22-01-2026 Q. What is thetolerable limit of FLORIDE ION IN DRINKING WATER which in excess can cause harmful effects in bones and teeth . Ans : 7 ppm for AS per US public health Service And 1.5 ppm for WHO Quiz : 23-01-2026 Q. Tank P contains 40 litres more water than tank Q. Tank R contains thrice as much water as tank Q. If tank R contains 54 litres water, then how much water does tank P contain? Ans : Tank P contains 58 litres of water.