Question
If azolla is grown in rice field along with rice crop,
then how much nitrogen is fixed byazolla in rice field ?Solution
Azolla is a free floating water fern which is in symbiotic association with Anabaena azollae  fixes 40-60 kg N/ha in rice fiels
Traveling at a speed of 's' km/hr, 'C' requires 22 seconds to complete one lap around the perimeter of a circular track with a radius of 35 meters. Dete...
If Lalitha leaves home and drives to her school at a speed of 45kmph, she reaches 5 minutes later than when she drives at 60kmph speed. Find the distanc...
- A train moves at a speed of 25 km/h and takes 16 hours to cover a certain distance. What speed will it need to cover the same route in 10 hours?
A boy goes to school at 10 km/Hr and return at a speed of 9 km/hr. If he takes 19 hrs in all. Find the distance from his village to school?
Train P starts from Lucknow to Dehradun at 11:55 am with an average speed of 27.5 m/s. Train Q starts from Dehradun to Lucknow at 1:35 pm with an averag...
'A' and 'B' are running on a circular track of length 3600 metres. 'A' is running clockwise at 4 m/s while 'B' is running anti-clockwise at 6 m/s. Find ...
- Asha travels 40.5 km in 1 hour and 30 minutes. How far will she travel in 4 hours if her speed increases by 3 km/h?
The combined cost price and marked price of Watch 'A' amounts to Rs. 11,000, while for Watch 'B', the total is Rs. 13,400. Watch 'A' is marked 20% above...
The ratio of the speed of two bus P and Q is 4 :7. If P takes 180 minutes more than Q to cover a certain distance, the find then actual time taken by Q ...
An Aeroplane flies along a Square field @ 75, 100, 150 and 200 km/hours respectively. Then find the Average speed of the Aeroplane during the whole jour...
