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Answer 1

Answer:

7.Copper and silver are both malleable and ductile.

8.The technique used to separate butter from curd is centrifugation

9.The property by which a metal produces a ringing sound when struck hard is called sonorous property. It is a metal because metals are hard , it is sonorous and can be bent down

10. It is a colloidal solution known as emulsion.Stability: Colloids are relatively stable in nature. The particles of the dispersed phase are in a state of continuous motion and remain suspended in the solution. Filterability: Colloids require specialized filters known as ultrafilters for filtration.

Explanation:

Answer 2

7. Copper and silver

8. Centrifugation

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