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Bronze and brass have copper metal as co...

Bronze and brass have copper metal as common component.

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MODERN PUBLICATION-METALS AND NON-METALS-EXERCISE
  1. T/F Rust is Fe2O3. xH2O

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  2. Pure gold is 100 carat gold.

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  3. Bronze and brass have copper metal as common component.

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  4. What is present in the middle piece of sperm?

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  5. Fill ups Zinc displaces copper form a solution of Cu^(2+) but ………….doe...

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  6. Fill ups Magnesium liberates hydrogen gas on reacting with ..............

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  7. The white powder formed when magnesium ribbon burns in oxygen it forms...

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  8. The rockey material found with ores is known as…………….

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  9. Conversion of sulphide ore into an oxide by heating in excess of air i...

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  10. Froth floatation process is used for the concentration of ……………..ores.

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  11. Cinnabar is an ore of

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  12. Fill ups Sodium amalgam is a mixture of sodium and …………………. .

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  13. What is the colour hydrated copper sulphate?

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  14. Fill ups The process of covering iron with………….is called galvanization...

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  15. Fill ups Out of Al,Zn and Ag only…………..cannot displace hydrogen form d...

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  16. What are het reactions occuring at the cathode and anode of a Leclanch...

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  17. Is nickel more reactive or less reactive than copper?

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  18. Can we store copper sulphate solution in a zinc vessel ?

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  19. Can you describe what happens when milk is converted into curd or yogh...

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  20. How is water gas prepared ?

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