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State any three chemical characteristics...

State any three chemical characteristics of a nonmetal

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BHARATI BHAWAN (ENGLISH)-METALS AND NONMETALS -Very short answer Questions
  1. Why is sodium kept under kerosene ?

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  2. Explain why sodium is not found in the native state.

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  3. State any three chemical characteristics of a nonmetal

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  4. How are metals refined by electrolytic process ?

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  5. Name three nonmetallic oxides which are acidic . What happens when the...

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  6. State any four uses of aluminium.

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  7. From among the following , choose metals and nonmetals. State one of t...

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  8. What happens when NH(4)OH is added to an aqueous solution of aluminium...

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  9. What is rust ? How is it formed ?

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  10. What do you mean by corrosion of metals ?

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  11. Explain why iron sheets are coated with zinc.

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  12. Mention any one method by which corrosion of metals can be prevented.

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  13. What is an alloy ? Write the composition of brass or bronze.

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  14. What is stainless steel? Mention two of its properties.

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  15. Give the equation(s) to show what happens when NH(4)OH is gradually ad...

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  16. what is vulcanization of rubber ?

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  17. Mention a reaction showing the reducing property of SO2 .

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  18. Why is hydrogen, a nonmetal, is included in the activity series of met...

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  19. What is amalgam ? How does it differ from alloy ?

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  20. Explain why alloy is a uniform mixture.

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