Question
In alchemy, aqua fortis is the classical name of which
chemical compound that is used chiefly in the manufacture of explosives and fertilisers, and in organic synthesis?Solution
The correct answer is A
If a boat travels 18 km more in downstream than in upstream in 3 hours and if the speed of the Boat in still water is 20 kmph. Find the distance tra...
A boy can swim in water with a speed of 13 km/hr in still water. If the speed of the stream is 5 km/hr, what will be the time taken by the boy to cover ...
Motor boat covers a certain distance downstream in a river in 20 hours. It covers the same distance upstream in 30 hours. If the speed of the water is ...
A boat goes x km downstream from A to B and then returns upstream to D, where BD = x/1.8. If total time taken is 52 hours, boat speed in still water is ...
A boat is navigating a river with a current speed of 2 km/h. It takes the boat 75 minutes longer to cover a distance of 56 km upstream than it does to c...
A boat can go 15 km upstream and 21 km downstream in 2 hours. If the speed of the stream is 6km/h, then the time taken (in hours) by the boat to go 21 k...
The speed of boat 'X' in upstream is 18 km/hr and speed of boat 'Y' in downstream is 30 km/hr. If the difference between speeds of boat 'X' and 'Y' in s...
Two boats X and Y start towards each other from two places, 140 km apart. Speed of the boat X and Y in still water are 13km/hr and 15km/hr respectively....
A boat can cover 130 km in upstream in 13 hours and 120 km in downstream in 4 hours. Find the speed of the stream.
The speed of a boat downstream is 20% more than the speed of the boat in still water. If the boat can travel 1280 km upstream in 16 hours, then find the...
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