MCQ Geography Chapter 6 The Properties of Sea Water Class 9 Maharashtra Board 1. What controls the density of seawater? Depth and waves Temperature and salinity Currents and rainfall Sunrays and windQuestion 1 of 202. What happens to seawater density when temperature reduces? It decreases It increases It stays the same It doublesQuestion 2 of 203. Which affects seawater density more? Salinity Temperature Depth CurrentsQuestion 3 of 204. After what depth do temperature, salinity, and density stop changing? 500 m 1000 m 1500 m 2000 mQuestion 4 of 205. What is seawater up to 500 m depth called? Deep water Surface water Cold water Saline waterQuestion 5 of 206. What generates ocean currents? Wind speed Differences in seawater properties Rainfall Earth’s rotationQuestion 6 of 207. Which condition leads to low salinity in the Baltic Sea? High evaporation Ample freshwater supply High temperature Desert surroundingsQuestion 7 of 208. Why is salinity higher in the northern Red Sea? More rainfall Higher evaporation More river water Lower temperatureQuestion 8 of 209. Why do oceans at the same latitude have different salinity? Same temperature Uneven freshwater supply Equal evaporation Similar currentsQuestion 9 of 2010. Why does temperature decrease with depth to a limit? Sunrays penetrate less Salinity increases Currents stop Density decreasesQuestion 10 of 2011. Why are there more salt-pans on India’s western coast? Lower salinity Higher salinity More rainfall Cooler waterQuestion 11 of 2012. What increases salinity in mid-latitudinal zones? High rainfall Low freshwater supply Cold currents Snow meltingQuestion 12 of 2013. Which factor does NOT affect seawater salinity? Evaporation Freshwater supply Temperature Ocean depthQuestion 13 of 2014. What is the salinity around the Tropic of Cancer and Capricorn? 31% 34% 37% 39%Question 14 of 2015. Which factor affects seawater temperature? Pollution Soil type Land height Cloud coverQuestion 15 of 2016. How does temperature change with depth in seawater? Increases to 4°C Decreases to 4°C then stabilizes Stays at 25°C Drops below 0°CQuestion 16 of 2017. Which is a factor affecting salinity? Ocean currents Depth Rainfall Wind speedQuestion 17 of 2018. How does temperature affect seawater density? Higher temperature increases density Lower temperature increases density Temperature has no effect Lower temperature decreases densityQuestion 18 of 2019. How does temperature affect seawater salinity? Higher temperature reduces salinity Lower temperature increases salinity Temperature doesn’t affect salinity Higher temperature increases salinityQuestion 19 of 2020. Which landlocked sea has the lowest salinity in the table? Mediterranean Sea Red Sea Baltic Sea Caspian SeaQuestion 20 of 20 Loading...
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