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In 1766, Henry Cavendish was the first to recognize hydrogen gas as a discrete substance, by naming the gas from a metal-acid reaction "inflammable air".
A train travels at a speed of 72.6 kn/hr. How many kilometres will it travel in 15 minutes?
Two trains running in opposite directions cross a pole in 25 seconds and 15 seconds respectively and they cross each other in 21 seconds.Find the ratio ...
Two trains 165 metres and 135 metres in length are running towards each other on parallel tracks, one at the rate 70 km/hr and another at 38 km/hr. In h...
A person sees a train passing over 4 km long bridge. The length of the train is half that of bridge if the train clears the bridge in 8 mins. What is th...
Two trains running in a opposite directions crosses pole in 84s and 57s respectively and they cross each other in 72s. Find the ratio of their speeds?
A train passes a pole in 15 seconds and takes 18.75 seconds to completely cross a platform that is 120 meters long. What is the length of the train?
A train running with a speed of 45 km/hr can cross a pole in 10 seconds and a platform in 20 seconds. Find the length of the platform.
Ratio of the lengths of two trains ‘X’ and ‘Y’ is 5:6 respectively and the ratio of time taken by them to cross a pole is 3:4 respectively. If s...
A train moving at a speed of 72 km/h takes 12.5 seconds to pass a pole. If the train takes 24 seconds to completely cross a platform, what is the lengt...
A train crosses a bridge in 15 secs while it crosses a man standing on a platform in 8 secs. If the speed of train 108 km/hrs, then what will be the ti...
