Rivers & Soil
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Q. If a river's flow rate is 500 cubic meters per second, how much water flows in one hour? (2021)
Q. If a river's sediment load is 200 kg/m³ and the river has a flow rate of 10 m³/s, what is the total sediment transported in one hour? (2022)
Q. If a river's sediment load is 300 kg/m³ and it flows at a rate of 10 m³/s, what is the total sediment load carried by the river in one hour? (2020)
Q. If a river's sediment load is 5 kg/m³ and the river has a flow rate of 100 m³/s, what is the total sediment transported in one hour? (2019)
Q. If a river's sediment transport capacity is 15 tons per cubic meter of water, how much sediment can it carry if the discharge is 100 m³/s? (2000)
Q. If a river's width increases from 50 meters to 100 meters while maintaining the same depth of 3 meters, what is the change in cross-sectional area? (2022)
Q. If a river's width is doubled and the depth remains the same, how does this affect the cross-sectional area? (2021)
Q. If a riverbank erodes at a rate of 2 meters per year, how much will it erode in 5 years? (2023)
Q. If the average velocity of a river increases from 2 m/s to 4 m/s, how does the discharge change if the width remains constant?
Q. If the depth of a river increases by 2 m and the width remains constant, how does this affect the volume of water in a section of the river that is 100 m long? (2022)
Q. If the depth of a river increases by 2 m and the width remains constant, how does this affect the volume of water if the length of the river is 1000 m? (2019)
Q. If the length of a river is 120 km and it flows at an average speed of 5 km/h, how long will it take for the river to flow from its source to its mouth? (2021)
Q. If the length of a river is 240 km and it flows at an average speed of 4 km/h, how long will it take for the river to flow from its source to the mouth? (2021)
Q. If the pH of a river is measured to be 7.5, what type of water is it considered? (2020)
Q. If the pH of a river water is 8, what type of soil is likely to be found in the surrounding area?
Q. If the sediment load of a river increases, what is the most likely effect on the river's flow?
Q. If the slope of a riverbed is 1:1000, what is the vertical drop over a distance of 2 km? (2000)
Q. If the soil erosion rate in a river basin is 2 tons per hectare per year, how much soil will be eroded from a 50-hectare area in 5 years? (2023)
Q. If the soil erosion rate is 2 tons per hectare per year, how much soil will be eroded from 50 hectares in 5 years?
Q. If the soil in a river delta is primarily clay, what is the expected drainage capacity compared to sandy soil? (2023)
Q. If the soil in a riverbank has a porosity of 30% and the volume of soil is 100 m³, what is the volume of water it can hold?
Q. If the soil moisture content is 25% and the dry weight of the soil is 200 kg, what is the weight of the water in the soil? (2020)
Q. If the soil moisture content is 25% and the weight of the dry soil is 200 kg, what is the weight of the water in the soil? (2022)
Q. If the soil moisture content is 30% and the bulk density of the soil is 1.5 g/cm³, what is the water holding capacity of 1 m³ of soil?
Q. If the velocity of a river increases, what is the expected effect on soil erosion along its banks? (2021)
Q. If the velocity of a river is 3 m/s and the width of the river is 20 m, what is the discharge of the river?
Q. If the width of a river is 200 meters and the depth is 5 meters, what is the volume of water in cubic meters that flows through the river in one second if the velocity of the water is 3 m/s?
Q. If the width of a river is 200 meters and the depth is 5 meters, what is the volume of water in one kilometer length of the river? (2021)
Q. In which type of river does the velocity of water increase as it flows downstream?
Q. The soil of a riverbank is composed of 40% sand, 30% silt, and 30% clay. What is the percentage of silt in the soil? (2019)
