Question
A man can row at 4 kmph in still water. If the velocity
of current is 2 kmph and it takes him 5 hour to row to a place and come back, how far is the place?Solution
Let the distance be x km. Speed upstream = 4 – 2 = 2 kmph Speed downstream = 4 + 2 = 6 kmph => (x/6) + (x/2) = 5 => (x + 3x)/6 = 5 => 4x = 30 => x = 7.5 km
Which crop is known as “Gold of America”?               Â
Under agroforestry system, ____________ tree shows shows allelopathic effect on cultivated crops
With the increase in carbon number in fatty acid chain, the melting point-
What is the family to which Rosemary (Rosmarinus officinalis) belongs?
Western blotting is a technique for the detection of
Which of the following given options, the cellular and molecular control of programmed cell death called?
Which of the following is not correct about CRD design?
The average conditions of weather for a month, season or year are denoted as
Tiller Production in rice is greatly affected by
Land capability classes are designated by the numbers 1 to 8. What do the numbers indicate?