Question
Who developed porous porcelain candle in the year 1884
to eliminate microbes from water?Solution
The correct answer is D
Pipe A fills a tank in 12 min, pipe B in 18 min. Time to fill together?
Pipe X can fill a tank in 15 hours and pipe Y in 30 hours. If both the pipes are opened in an empty tank, how much time will they take to fill it?
Tap A can fill tank X in 20 minutes, but with a leakage (tank Y), it takes 33(1/3) minutes to fill. Tap B operates at 20% less efficiency than Tap A. De...
Tap A can fill a tank in 8 hours. Tap B can fill 12.5% part of the same tank in 2 hours, whereas Tap C can alone empty a tank in ‘x’ hours. 5/8 part...
Pipe M can fill a tank in 10 hours, and pipe N can do the same in 30 hours. Pipe O can drain half the tank in 6 hours. If all pipes are opened at once, ...
In a party a tank is filled with some quantities of juice. Three vessels of different volume are used to serve the juice. Volume of the smallest vessel ...
Tap A and Tap B fill a drum of volume 117 liters in 3 minutes. If their efficiencies are in the ratio x:y respectively and B alone takes to fill the cis...
Three taps A, B and C can fill a tank in 10, 18 and 6 hours, respectively. If B is open all the time and A and C are open for one hour each alternativel...
Pipes X, Y, and Z can fill a tank in 12 hours, 6 hours, and 8 hours respectively. If the efficiencies of pipes X and Y are each reduced by 50% of their ...
Pipe L can empty the tank which is 45% filled in 9 hours. The time taken by pipe K and J together to fill an empty tank completely in 7.5 hours. Pipe J ...
