MCQ Chapter 13 General Science Class 7 Maharashtra Board MCQ For All Chapters – General Science Class 7Changes – Physical and Chemical 1. What is the primary cause of natural changes like fruit ripening? Human intervention Natural processes Mechanical force Chemical reactionsQuestion 1 of 202. Which of the following is an example of a man-made change? Raining Baking bread Rusting of iron A fruit fallingQuestion 2 of 203. What kind of change is sharpening a pencil classified as? Harmful Useless Useful NaturalQuestion 3 of 204. Which change takes a shorter duration: bursting of a balloon or ripening of a fruit? Ripening of a fruit Bursting of a balloon Both take the same time Neither changesQuestion 4 of 205. What type of change is the melting of wax that can be reversed? Irreversible Periodic Reversible Non-periodicQuestion 5 of 206. Which of the following is an irreversible change? Melting of wax Burning of wood Stretching a spring Evaporation of waterQuestion 6 of 207. What type of change is the occurrence of day after night? Non-periodic Periodic Irreversible ChemicalQuestion 7 of 208. Which change is an example of a non-periodic change? Change of seasons Flooding High tide in the sea Clock hands movingQuestion 8 of 209. In a physical change, what remains unchanged? The substance’s color The substance’s composition The substance’s smell The substance’s weightQuestion 9 of 2010. What type of change results in a new substance with different properties? Physical change Chemical change Periodic change Reversible changeQuestion 10 of 2011. Which process is an example of a physical change? Rusting of iron Evaporation of water Burning wood Ripening of a tomatoQuestion 11 of 2012. What happens to sugar when heated in an evaporating dish? It evaporates It turns into a blackish substance It remains unchanged It becomes liquid onlyQuestion 12 of 2013. What is the process called when a reddish-brown layer forms on iron? Galvanization Corrosion Tinning Powder coatingQuestion 13 of 2014. What causes corrosion of metals? Heat alone Oxygen and moisture Light exposure Physical pressureQuestion 14 of 2015. Which change is classified as natural? Cooking food Spoiling of milk Lighting a bulb Cutting vegetablesQuestion 15 of 2016. What kind of change is the falling of a tree in a storm? Man-made Useful Natural ReversibleQuestion 16 of 2017. What type of change is the conversion of milk into yoghurt? Physical Chemical Periodic Non-periodicQuestion 17 of 2018. How many times do the hour hands of a clock show periodic changes from 6:00 am to 6:00 pm? 1 2 12 24Question 18 of 2019. Which change in the glass bangle experiment is reversible? Breaking the glass Heating and bending Burning the glass Coloring the glassQuestion 19 of 2020. What is an example of a fast change? Ripening of a fruit Rusting of iron Bursting of a balloon Change of seasonsQuestion 20 of 20 Loading...
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