Question
Arrange the following metals in the decreasing order of
reactivity: K, Na, Zn, Cu, Hg, AgSolution
The correct answer is A
1260 metres long train crosses a man who is moving in the same direction with a certain speed in 30 seconds. If the same train can cross a pole in 21 se...
Two trains running at the rates of 108 and 90 kmph respectively, On parallel rails in opposite directions, are observed to pass each other in 24 secon...
A train 200 metre long takes 30 sec to cross a man running at a speed of 4 km/hr in the direction opposite to that of train. What is the speed of the tr...
A train travelling with a speed of 90 km/h can cross a pole in 8 seconds. Find the time taken by the train to cross a 220 metres long platform if the sp...
1440 metres long train crosses a man who is moving in the same direction with a certain speed in 30 seconds. If the same train can cross a pole in 24 se...
A train running at 90 km/hr crosses a vertical pole in 5 seconds and a platform in 20 seconds. Determine the length of the platform.
A train travelling with a speed of 90 km/h can cross a pole in 8 seconds. Find the time taken by the train to cross a 300 metres long platform if the sp...
Train ‘M’ is travelling with a speed of 72 km/hr and crosses a vertical pole in 5 seconds. Train ‘N’ is 25 metres longer than ‘M’ and trave...
Train ‘X’ is travelling with a speed of 90 km/hr and crosses a vertical pole in 6 seconds. Train ‘Y’ is 30 metres longer than ‘X’ and trave...
Train ‘D’ is travelling with a speed of 60 km/hr and crosses a vertical pole in 6 seconds. Train ‘E’ is 36 metres longer than ‘D’ and travel...
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