Rusting of iron is a chemical process that primarily involves the oxidation of iron. In the presence of oxygen and moisture, iron reacts to form iron oxide, commonly known as rust. The reaction typically involves the iron losing electrons to oxygen, a process that is accelerated in the presence of water and electrolytes, leading to the characteristic red or brown coating on the metal.
Ratio of speed of boat in downstream and speed of stream is 7:3, if speed of current is 9 km/hr, then find distance travelled (in km) upstream in 6 hours.
Before rain a boat can cover 90 km in still water and the same distance upstream in 6 hours and 9 hours, respectively. Due to the rain the speed of the ...
A, B and C started a business by investing in the ratio 1/5 : 1/4 : 2/6. After 6 months C withdrew 1/4 of his investment. If after 1 year from start of ...
A Boat travel 80 km distance in downstream and 48 km upstream and the total time taken is 20 hours. The same boat travels 30 km distance in downstream a...
A boat can travel 28 km downstream in 30 min. The ratio of the speed of the boat in still water to the speed of the stream is 5: 3. How much time will t...
The ratio of the speed of boat ‘A’ in still water, the speed of boat ‘B’ in still water and the speed of the current is 11:5:2, respectively. If...
A man row a boat 1 km in 5 min, along the stream and 6 km in 1hrs against the stream, The speed of the stream will be
A boat moving downstream covers a distance of 200km in 5 hrs as long as to cover the same distance upstream it takes 10hrs. What will be the time taken ...
If the sum of upstream and downstream speed is 32 km/hr and the speed of the current is 6 km/hr. Then find time taken to cover 44 km in downward?
A boat can cover 90 km upstream and 225 km downstream in 15 hours. Speed of the stream is how much less than the speed of the boat in still water if the...
