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Let the speed of the boy in still water be x kmph. Then, (x + 4) × 5 = (x – 4) × 7 => 5x + 20 = 7x - 28 => 2x = 48 => x = 24 kmph
Physical condition of soil resulted due to tillage is
Which ministry under Govt. of India is the administrative ministry for implementation of FSSAI?
Moist soils warms up slowly because
Groundnut aphid (Aphis craccivora) apart from ground nut it is a serious pest of
Turgidity of a cell is maintained by:
A slope of ______________ % is good for highway and building constructions.
Biennial weeds complete their cycle in ______ year(s).
The rearing of young bee to replace the old queen bee is
Which gas is primarily emitted from rice fields?