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The biogas is then burnt as fuel (Change-B). 3 years ago Satkriti Roao class 7 cbse ncert physical chemical changes The gas we use in the kitchen is called liquified petroleum gas (LPG). In the cylinder, it exists as a liquid. 3 years ago Satkriti Roao class 7 cbse ncert physical chemical changes Explain why rusting of iron objects is faster in coastal areas than in deserts. 3 years ago Satkriti Roao class 7 cbse ncert physical chemical changes Explain how painting an iron gate prevents it from rusting? 3 years ago Satkriti Roao class 7 cbse ncert physical chemical changes Describe how crystals of copper sulphate are prepared. 3 years ago Satkriti Roao class 7 cbse ncert physical chemical changes Explain why burning of wood and cutting it into small pieces are considered as two different types of changes. 3 years ago Satkriti Roao class 7 cbse ncert physical chemical changes How would you show that setting of a curd is a chemical change? 3 years ago Satkriti Roao class 7 cbse ncert physical chemical changes When a candle burns, both physical and chemical changes take place. Identify these changes. Give another example of a familiar process in which both the chemical and physical changes take place. 3 years ago Satkriti Roao class 7 cbse ncert physical chemical changes When baking soda is mixed with lemon juice, bubbles are formed with the evolution of a gas. What type of change is it? Explain. 3 years ago Satkriti Roao class 7 cbse ncert physical chemical changes When carbon dioxide is passed through lime water, it turns milky due to the formation of .......... (b) The chemical name of baking soda is ......... 3 years ago Satkriti Roao class 7 cbse ncert physical chemical changes Cutting a log of wood into pieces is a chemical change. (True/ False) (b) Formation of manure from leaves is a physical change. (True/ False) 3 years ago Satkriti Roao class 7 cbse ncert physical chemical changes Classify the changes involved in the following processes as physical or chemical changes: (a) Photosynthesis (b) Dissolving sugar in water 3 years ago Satkriti Roao class 7 cbse ncert physical chemical changes Share: Super Globals Requests: Server: Options and Features route: community use_home_url: url: https://eanshub.com/community/ pageid:187 default_groupid: 3 2022 How Can We Help? Δ Home About Us Contact Us Privacy Policy Term of Use Copyright © 2020 Eanshub All Rights Reserved