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Fill in the blanks.1. Stars including Sun are covered in _____2. Tiny particles present in all matter are called as _____ 3. A _____ substance is made up of only one kind of particles. 4. Purity of gold is expressed in terms of _____ 5. _____ is used to separate gravel from sand at a construction site. 6. _____ process is done after sedimentation. 7. RO is a process for removing impurities from _____ to make it potable. 8. Turmeric powder is adulterated with a _____ chemical. 9. In most houses people use commercial water filter to remove impurities and also kill the harmful germ in water using _____ 10. The principle used in washing machines to squeeze out dirt from cloth is called _____ 11. _____ is not affected by gravity. 12. An example for a substance to be obtained in highly pure form is _____ |
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Answer» 1. Plasma 2. atoms and molecules 3. pure 4. Carat 5. Wire mesh 6. Decantation 7. Water 8. bright yellow 9. UV-rays 10. centrifugation 11. Gas 12. Gold from gold mines |
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