General Knowledge
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Q. A river flows at a speed of 4 km/h. If a boat can travel at 10 km/h in still water, how long will it take the boat to travel 12 km upstream?
Q. A river flows at a speed of 4 km/h. If a boat travels downstream at 12 km/h, what is the speed of the boat relative to the river? (2020)
Q. A river flows through a region with a soil erosion rate of 5 tons per hectare per year. If the area of the watershed is 100 hectares, how much soil is eroded in a year?
Q. A river flows through a region with a soil retention capacity of 20% of its volume. If the river has a volume of 1000 m³, how much water can be retained by the soil? (2023)
Q. A river flows through a valley with a gradient of 1 in 1000. If the river descends 2 meters over a distance of 2000 meters, is the gradient consistent? (2023)
Q. A river flows through a valley with a gradient of 1:1000. If the river descends 2 meters over a distance of 2000 meters, is the gradient consistent? (2022)
Q. A river has a cross-sectional area of 150 m² and flows at a velocity of 4 m/s. What is the discharge of the river? (2021)
Q. A river has a depth of 4 m and a width of 10 m. If the flow velocity is 2 m/s, what is the flow rate?
Q. A river has a length of 100 km and a drainage area of 500 km². What is the average discharge per square kilometer?
Q. A river has a length of 150 km and a width of 50 m. If the average depth is 3 m, what is the approximate volume of water in the river in cubic meters?
Q. A river has a length of 150 km and a width of 50 m. What is the area of the river? (2020)
Q. A river has a length of 200 km and a width of 50 m. What is the area of the river's surface? (2021)
Q. A river has a width of 300 meters and a depth of 5 meters. What is the volume of water flowing through the river in one second if the flow speed is 2 m/s? (2020)
Q. A river has a width of 300 meters. If a boat crosses the river at a speed of 15 m/s, how long will it take to cross the river? (2020)
Q. A river is 150 km long and has an average width of 50 meters. What is the approximate area of the river?
Q. A river is 300 m wide. If a person swims across the river at a speed of 2 m/s and the river flows at 1 m/s, how long will it take to cross the river? (2020)
Q. A river is flowing at a rate of 1000 liters per second. How many cubic meters of water does it flow in one hour?
Q. A river meanders and has a total length of 150 km. If the straight-line distance from the source to the mouth is 100 km, what is the river's meandering ratio? (2023)
Q. A river's current is 5 km/h. If a boat travels downstream at 15 km/h, what is the effective speed of the boat relative to the riverbank?
Q. A river's depth increases by 2 meters due to rainfall. If the river's width is 50 meters, what is the increase in volume per kilometer of the river? (2020)
Q. A river's flow is measured at 50 m³/s. If the river narrows, causing the flow to increase to 75 m³/s, what is the percentage increase in flow?
Q. A river's flow rate is measured at 1500 liters per second. How many cubic meters of water does it flow in an hour? (2021)
Q. A river's flow rate is measured at 200 cubic meters per second. How much water flows through the river in one hour? (2020)
Q. A river's sediment load is measured at 200 kg per cubic meter of water. If the river has a flow of 100 m³/s, what is the sediment load per second? (2023)
Q. A river's sediment load is measured at 300 kg per cubic meter of water. If 1000 m³ of water flows, how much sediment is carried? (2019)
Q. A river's velocity is measured at 2 m/s. If the river's width is 10 m and depth is 3 m, what is the discharge?
Q. A river's width is 15 m and its average depth is 2 m. What is the cross-sectional area of the river?
Q. A river's width is 50 meters and its average depth is 3 meters. What is the cross-sectional area of the river? (2022)
Q. A runner completes a 400 m lap in 50 seconds. What is the average speed of the runner in m/s? (2019)
Q. A rural development scheme aims to build 50 houses at a cost of ₹1.5 lakhs each. What is the total cost of the project?
