Question
Aman finishes 2/5 of a task in 8 days, while Bhanu
completes the entire task in 16 days. How long will it take for both Aman and Bhanu, working together, to complete 90% of the task?Solution
ATQ; Time taken by ‘Aman’ to complete whole work alone = 8 × (5/2) = 20 days Let total work = 80 units Efficiency of ‘Aman’ = 80/20 = 4 units/day Efficiency of ‘Bhanu’ = 80/16 = 5 units/day Required time taken = {(0.9 × 80)/(5 + 4)} = 8 days
According to the mobility of element in soil; which of the following is considered as Immobile in soil.
……………………………is a key factor for successful crop production and it is a measure of capacity of soil to supply plant nutrients.
...Where is NRSC ( national remote sensing centre) located?
Which of the following is a source of Boron?
Which of the following actinomycetes is responsible for nitrogen fixation?
…………………..measures the proportion of cation exchange sites occupied by sodium.
Flooding is the method used for the reclamation practice in which of the problematic soil?
In a well-aggregated soil, how does soil porosity influence the movement of air and water?
Why does a high C: N ratio in added organic matter initially slow down nitrogen availability for plants?
The liming material generally used for reclaiming acid soils
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