Question
A was travelling from point X to point Y. He increased
his speed by 12 km/h after every hour. He reached his destination in 16 hours. If his initial speed was 50 km/h, then what was his average speed in the whole journey?Solution
Total distance travelled by A = (16/2) × {2 × 50 + (16 – 1) × 12} = 12 × (100 + 180) = 2240 km Required average speed = 2240/16 = 140 km/h
“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:
