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ATQ,
Downstream speed = 30 km/hr,
Upstream speed = 20 km/hr. Speed in still water = (30+20)/2 = 25 km/hr Time = Distance/speed = 160/25 = 6.4 hrs or 6 hours 24 minutes.
Transfer of information from DNA to mRNA is called
Which of the following is a cultural method of weed control?
Vertical section of soil is called as
Three particles have diameters of 0.5, 1.5, and 0.15 mm. The three particles are
Calcium deficiency causes toxicity of:
How much of rainfall quantities is required in a day of 24 hours to call it a rainy day?
The Book "Wealth of Nations" written by
Proper time of sowing hybrid maize is:
Salamander belongs to which class?
What is the pH range of arid and semi-arid soil?