Question
X started to run from point ‘A’ to ‘B’ at a
speed of 28 km/hr at 9:00 am and Y started to run from point ‘B’ to ‘A’ at a speed of 12 km/hr at 11:00 am. If they meet each other at 3:00 pm then find the distance between points ‘A’ and ‘B’.Solution
Distance covered by X in 2 hours = 28 × 2 = 56 km Relative speed of X and Y = 28 + 12 = 40 km/hr Sum of distance covered by both in 4 hours = 40 × 4 = 160 km Total distance between points ‘A’ and ‘B’ = 56 + 160 = 216 km
Sand drawn disease in tobacco is caused due to the deficiency of ____
Which clay mineral group is known for its ability to swell and expand when wetted?
The ESP of saline soils is _____%
In a well-aggregated soil, how does soil porosity influence the movement of air and water?
Largest soil order in world is
The Fertilizer (control) order came into force in
The larger the soil aggregates, the greater is the amount of ……………………….pores.
Which of the following primary tillage operation is used to invert the soil partially or completely?
Soil moisture potential is measured with the help of ______instrument.
…………………..measures the proportion of cation exchange sites occupied by sodium.
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