Downstream speed = 48/4 = 12 km/h. Upstream speed = 24/6 = 4 km/h. Speed in still water = (12 + 4)/2 = 8 km/h. Correct option: b
Nilaparvata lugens is a pest of
Frequencies of the classes are plotted by dots against the mid-points of each class and then the adjacent dots are connected by straight lines be called?
Local control is not applied for the design:
Cut or excised leaves remain green for long if induced to root or dipped in_____
Inheritance of ABO blood group system is an example of____
Tikka disease of groundnut is caused by which pathogen
Which crop is suitable to prevent soil erosion?
Which acid is the manufacture of synthetic rubber?
The term ‘insect’ is derived from the Latin word insectum which means ‘cut into’. Insects are considered to be beneficial because they are
...A reaper is used for
