MCQ General Science Chapter 3 Class 7 Maharashtra BoardMCQ For All Chapters – General Science Class 7Properties of Natural Resources 1. At what temperature is the density of water maximum? 0°C 4°C 10°C -10°CQuestion 1 of 202. What is the anomalous behavior of water? It contracts below 4°C It expands below 4°C It evaporates at 0°C It becomes denser at 10°CQuestion 2 of 203. Why do aquatic animals survive in frozen rivers? Water freezes completely Ice floats, leaving liquid water below The density of ice increases Air warms the waterQuestion 3 of 204. Why does a potato float in salt water but sink in plain water? Salt decreases water density Salt increases water density The potato shrinks in salt water Salt evaporates the waterQuestion 4 of 205. What is water called when it dissolves a solute? Solute Solvent Solution MixtureQuestion 5 of 206. Why is water considered a universal solvent? It dissolves only salt It dissolves many substances It freezes easily It has no volumeQuestion 6 of 207. What property of water makes it useful for transport? Its density Its fluidity Its color Its weightQuestion 7 of 208. What gives soil its color? Water content Organic and chemical ingredients Air pressure TemperatureQuestion 8 of 209. Which soil type has the highest water-holding capacity? Sandy soil Silt soil Clay soil Sedimentary soilQuestion 9 of 2010. Why is sandy soil less fertile? It holds too much water It has low nutrient supply capacity It is too dense It is too smoothQuestion 10 of 2011. What determines the texture of soil? Its color Proportion of particle sizes Its temperature Its weightQuestion 11 of 2012. What is the property of soil that allows it to be shaped? Fertility Plasticity Density TextureQuestion 12 of 2013. What is China clay used for? Making statues Making crockery and tiles Growing plants CosmeticsQuestion 13 of 2014. What does soil testing determine? Air pressure Proportions of soil ingredients Water temperature Sound transmissionQuestion 14 of 2015. What pH value indicates neutral soil? Less than 6.5 6.5-7.5 Higher than 7.5 Exactly 6Question 15 of 2016. What causes diminished soil fertility? High water drainage Excessive use of chemical fertilizers Low air pressure High temperatureQuestion 16 of 2017. When is World Soil Day celebrated? 5th December 1st April 15th June 10th OctoberQuestion 17 of 2018. Who introduced the concept of pH? Daniel Bernoulli Sorensen Newton EinsteinQuestion 18 of 2019. What should be cultivated to restore soil fertility after wheat harvesting? Rice Leguminous crops Corn SugarcaneQuestion 19 of 2020. Why should a glass bottle filled with water not be kept in a freezer? It will shrink It may break due to water expansion The water will evaporate The glass will meltQuestion 20 of 20 Loading...
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