Question
Two trains X and Y start at the same time in the
opposite direction from two points P and Q and arrive at their destinations 25 and 16 hours respectively after their meeting each other. At what speed does the second train Y travel if the first train travels at 48 km/h.ÂSolution
Let the speed and time of two trains be s1 and s2, and t1 and t2. s1/s2 = (t2/t1)1/2 => 48/s2 = 4/5 => s2 = 60 km/hr.
Which property of soil usually reflects the extent of leaching and weathering of soils?
Which factor significantly influences the decomposition rate of organic matter in soils?
Which of the following is the progeny of breeder seed and is responsible for producing certified seed?
Which of the following primary tillage operation is used to invert the soil partially or completely?
The study of soil from the stand point of higher plants is known as……………………….
Which factor most significantly influences soil bulk density?
 The larger the soil aggregates, the greater is the amount of ……………………….pores.
The most suitable soil type for groundnut cultivation is _____
Which of the following actinomycetes is responsible for nitrogen fixation?
The liming material generally used for reclaiming acid soilsÂ
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