Oxygen evolved during photosynthesis comes from splitting of water.
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...
The distance covered by a train in (5y – 1) hours is (125y³ – 1) km. The speed of the train is.
Train A running with a sped of 90 km/h crosses a vertical pole in 12 seconds. Speed of train A is 5 m/s less than speed of train B, and length of train ...
A train travelling with a speed of 36 km/h can cross a pole in 9 seconds. Find the time taken by the train to cross a 180 metres long platform if the sp...
Two trains of equal lengths take 20 seconds and 30 seconds respectively to cross a telegraph post. If the length of each train be 240 metres, in what ti...
Train 'M' takes 2 hours less than Train 'N' to travel a distance of 150 km. The speed of Train 'M' is 20 km/h more than that of Train 'N'. What is the t...
A train crosses a stationary tree in 13 seconds and a 150-meter-long bridge in 18 seconds. If a dog is walking in the same direct...
A train takes 18 seconds to cross a platform and 6 seconds to cross a pole. If the length of the train is 70 metres less than the length of the platform...
Two trains approach each other at 19 kmph and 23 kmph from 2 places 210 km apart. After how many hours they will meet?
Two trains A and B, were proceeding in the same direction on parallel tracks at 22 km/hr and 76 km/hr respectively. A man noticed that it took exactly 1...
