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Let the speed of the train be x Relative speed = (x - 3) km/hr ⇒ (x - 3) = (420 × 18)/(21 × 5) ⇒ (x - 3) = (7560)/(105) ⇒ x – 3 = 72 ⇒ x = 72 + 3 = 75 km/hr
Small reddish brown spot surrounded by water soaked margin with yellow holes appear on soybean pods are the symptoms of:
Acidic soils are found in
Application of super digested compost to acidic calcareous and heavy soils increases the availability of
Match List I with List II IMD uses the aridity index on the basis of (PE-AE)/PE to assess fortnight drought situation over India