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Azotobacter is a genus of free-living bacteria that can fix atmospheric nitrogen in the absence of a symbiotic relationship with plants. It is capable of carrying out nitrogen fixation aerobically, meaning it can fix nitrogen in the presence of oxygen.
A train 450 metre long takes 45 sec to cross a man running at a speed of 4 km/hr in the direction same to that of train. What is the speed of the train?
Train P travelling at 42 km/hr crosses another train Q, having three fourth of its length and travelling in opposite direction at 30 km/hr in 21 seconds...
A 140 m long train crosses another 260 m long train running in the opposite direction in 15 seconds. If the shorter train crosses a pole in 14 seconds, ...
Train ‘A’ running with a speed of 126 km/hr can cross a standing goods train of 4 times its length in 25 seconds. Find the time taken by 500 metres ...
Find the time (in seconds) taken by a 400 metre long train which is moving at a speed of 90 km/h, to cross a 500 metre long bridge.
A goods train leaves a station at a certain time and at a fixed speed. After 12 hours, an express train leaves the same station and moves in the same di...
A train takes to cross a man standing on a platform and a 360m long bridge 12 sec and 30 sec respectively. How long will it take to cross a 220m long pl...
100 metre long train ‘A’ can cross a platform of length 50 metres in 20 seconds. If the speed of train ‘B’ is 6 m/s more than that of train ‘A...
A 160 m long train crosses another 280 m long train running in the opposite direction in 11 seconds. If the shorter train crosses a pole in 8 seconds, w...
