Laboratory thermometer - Temperature of boiling water can be measured by this., Small intestine - complete digestion of food, Liver - bile juice secretion, Insulators - materials which donot allow heat to pass through them., Radiation - No medium is required for transfer of heat by this process , Conduction - The process by which heat is transferred in solids., Acids - change blue litmus into red, Bases - change red litmus into blue., Sodium hydroxide - found in soap, Acetic acid - found in vinegar , Humus - The rotting dead matter in the soil., Clayey soil - Used to make pots, toys and statues.,

revision work class 7 science

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