Question

1)Write uses of calorimeter.
2)Explain the action of dropper. 3) Scale available on graph paper and how to use graph paper to measure irregular surface area. 4) Give four examples of conductors and insulators. 5) What is soft and hard water? Give two examples of simple and compound leaves. 6) Give two examples of fleshy and juicy fruits. 7) Give any four examples of medicinal plants. 8) Give any two examples of xerophytic and hydrophytic plants.

Answer 1

1.A calorimeter is a device used for measuring the heat of chemical reactions or physical changes as well as heat capacity.2.When we press the dropper low pressure is created in.When we release the liquid which is already at high pressure enters into area of low pressure.4. Some common conductors are copper, aluminum, gold, and silver. Some common insulators are glass, air, plastic, rubber, and wood5.The presence of calcium ions and magnesium ions in the water makes it hard. Soft water readily forms lather with soap, but it is more difficult to form lather with hard water.6.apple,orange,strawberry,banana 7.tulsi,neem,eucalyptus8.Xero- cactus,joshua tree.hydro- lily,lotus,hydrilla