MCQ Geography Chapter 6 The Properties of Sea Water Class 9 Maharashtra Board 1. What is the largest water storage in the world? Rivers Oceans Lakes GlaciersQuestion 1 of 202. Why is seawater salty? Due to fish Due to dissolved salts Due to rain Due to wavesQuestion 2 of 203. What is a major property of seawater? Color Temperature Depth ShapeQuestion 3 of 204. Where is the surface temperature of seawater highest? Polar areas Mid-latitudes Equatorial areas Temperate zonesQuestion 4 of 205. What is the average surface temperature of seawater near the poles? 25°C 16°C 2°C 4°CQuestion 5 of 206. Which factor does NOT affect the surface temperature of seawater? Ocean currents Salinity Rainfall MountainsQuestion 6 of 207. What happens to seawater temperature after 2000 m depth? It increases It stays uniform It decreases sharply It freezesQuestion 7 of 208. Why does water at greater depths not freeze? It’s too salty Temperature stays at 4°C Sunrays heat it Currents keep it warmQuestion 8 of 209. Where does seawater temperature change rapidly with depth? Polar areas Mid-latitudes Equatorial areas Temperate zonesQuestion 9 of 2010. Which seas have higher temperature due to salinity? Open seas Landlocked seas Polar seas Tropical seasQuestion 10 of 2011. What is salinity measured in? Parts per hundred Parts per thousand Parts per million Parts per billionQuestion 11 of 2012. If 40 g of salt is dissolved in 1000 g of seawater, what is the salinity? 4% 40% 400% 0.4%Question 12 of 2013. What increases the salinity of seawater in the experiment? Adding freshwater Evaporation Stirring CoolingQuestion 13 of 2014. In which container does salinity increase after 3-4 days? Kept in the sun Kept in the classroom With added freshwater Covered tightlyQuestion 14 of 2015. Where is salinity high in seas? High evaporation, low freshwater Low evaporation, high freshwater High rainfall, high river supply Low temperature, high snowQuestion 15 of 2016. Which region has higher salinity due to hot deserts? Equatorial Mid-latitudes Temperate PolarQuestion 16 of 2017. Why is salinity low in polar areas? High evaporation Low temperatures and less evaporation High rainfall More salt depositsQuestion 17 of 2018. Which sea has the highest salinity mentioned? Mediterranean Sea Dead Sea Red Sea Baltic SeaQuestion 18 of 2019. What is the average salinity of the Atlantic Ocean? 35% 39% 41% 332%Question 19 of 2020. Why can’t you drown in the Dead Sea? It’s shallow High density from salinity Warm temperature No currentsQuestion 20 of 20 Loading...
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