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Electron microscope could not be used in the study of "_______________" .

How much water do we use daily ? Record your estimates in a table, How you could reduce the amount of water used and write how much water can you save.

Which of the following units could be used to measure electric charge?

Match the objects given below with the materials from which they could be made. Remember, an object could be made from more than one material and a given material could be used for making many objects.