Question
 Initial symptom appears in ……………………..
months old crop as thin papery white young leaves at the top of the cane in grassy shoot diseaseSolution
In Grassy shoot disease Initial symptom appears in the young crop of 3 –4 months age as thin papery white young leaves at the top of the cane. Later, white or yellow tillers appear in large number below these leaves (profuse tillering).
A boat takes 4 hours to travel 48 km downstream and 6 hours to travel the same distance upstream. What is the speed of the boat in still water?
The Ship's speed in calm water exceeds that of the current by 20%. After sailing downstream for 4 hours, it traveled upstream for 4 hours with an increa...
A steamer covers 80 km in 5 hr. in still water. If the speed of the steamer in still water is 50% more than that of the stream, then time is required fo...
- A launch goes 120 km with the current in 6 hours. For the same trip against the current, it needs 4 hours more. What’s the speed of the boat in still wat...
Speed of a boat in still water is three times the speed of the boat in upstream. If the boat takes 15 minutes to cover 30 km in downstream, then find th...
Ramu can row 12 km/hr. in still water. It takes him twice as long to row up as to row down. Find the rate of the stream.
The speed of a boat in still water is 20 km/hr. If the boat covers 80 km in upstream in 8 hours, then find the time taken by the boat to travel 150 km i...
A man can row one quarters of a kilometer against the stream in 30/4 minutes and return in 5/2 minutes. The speed of the man in still water is:
When travelling downstream, a boat takes 4.25 hours to travel 204 km. If the speed of the stream is (3/8)th of downstream speed of the boat, ...
The ratio between the speed of the boat in upstream and the speed of the stream are 6:5 respectively. The boat can cover (d+140) km distance in downstre...