List of top Soil Science Questions

Bench terracing is to be done on a 25% sloped land with riser slope of 1:1 and width of level terrace as 6 m. The vertical interval for terraces will be:
If the diameter of the well is doubled, the water yield will increase by about:
Indian remote sensing satellite - 1C (IRS-1C) operates in how many spectral bands?
The water pressure developed by 25 meters of water head is about:
The duty of canal water (hectare per cm per second) 'D', base period of crop 'b' in days and delta 'd' in meter are related as:
If the moist and oven dried weights of a soil sample are 100 gram and 80 gram, respectively, the moisture content of the sample on dry weight basis will be:
Drip emitters can discharge water ranging from:
One-atmosphere pressure is equivalent to:
The soil having the maximum water holding capacity is:
In order to determine moisture content by oven drying method, the sample is kept in the oven fixed at a temperature of:
In a soil sample, the void ratio 'l' and porosity 'n' are related as:
The instrument which is used to measure evapotranspiration in the field condition is:
For determination of moisture content in a soil sample, the moist sample is put in the oven for a period of:
One horse power is equal to:
The minimum wind velocity at 0.30 m from ground surface required to initiate the movement of the most erodible soil particle is about:
The size of the soil particles prone to saltation due to wind ranges from:
If a water pump delivers 10 liters of water in one second against the head of 38 meters, the water horse power required will be:
The water held tightly to the surface of soil particles by adsorptive forces is called:
Contour bunds are recommended on the land slopes:
Which of the following is a permanent gully control structure?
For a straight inlet drop spillway with 1 m crest length and 1 m head above the crest, the discharge capacity will be:
An instantaneous unit hydrograph is assumed to have the duration of rainfall occurrence as:
The type of rainfall is called heavy, when its intensity is:
The intensity of rainfall for a 2-hour unit hydrograph is:
The intensity of drizzling precipitation is generally: