Question
A boat goes 200 km downstream in 50 hours, and 90 km
upstream in 30 hours. Find the speed of the boat in still water isSolution
Distance downstream= 200 km Time taken to row downstream = 50 hrs. therefore, speed downstream = 200/50 = 4 km/hr Distance upstream = 90 km Time taken to row upstream = 30 hrs therefore, speed upstream = 90/30 = 3 km/hr therefore, speed of the boat in still water = 1/2 (4 + 3) = 3.5 km/hr
“Regional Centre of International Rice Research Institute” is recently established in India at:
Cyphomandra betacea is the botanical name of which fruit-bearing plant?
Which one is cole-crop:
Which term describes the process where water vapour is released from plant leaves into the atmosphere ?
Mass selection is done in plants on the basis of :
Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R):
Assertion (A): Tetrazolium test imparts...
The germination of seeds while still on the mother plants is known as ____
The first transgenic crop approved for cultivation was
H.A.N.P. V. is used for the biological control of
The “Law of Maximum” was proposed by:
Relevant for Exams:
