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An element M forms an oxide M2O3. Which ...

An element M forms an oxide `M_2O_3`. Which is acidic in nature. State whether the element M is a metal or a non-metal.

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MODERN PUBLICATION-METALS AND NON-METALS-EXERCISE
  1. Name two metals which react with dilute nitric acid to produce hydroge...

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  2. Give one example of each of metal that is good conductor of electricit...

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  3. An element M forms an oxide M2O3. Which is acidic in nature. State whe...

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  4. A solution of CuSO4 was kept in an iron pot. After a few days the iron...

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  5. Define calcination and roasting.

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  6. What would happen to iron railings on the roadside if they are not pai...

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  7. Explain the following: Carbon cannot reduce the oxides of Na and Mg.

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  8. Explain the following: Reactivity of Al decreases if it is dipped in H...

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  9. Explain the following: Titanium is a strategic metal.

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  10. A,B and C are three elements which undergo chemical changes according ...

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  11. A,B and C are three elements which undergo chemical changes according ...

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  12. Consider the following reactions : (i) A + B SO4 rarr a SO4 +B (ii...

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  13. With the help of diagram show the transfer of electrons between the at...

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  14. Why are ionic compounds usually hard?

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  15. Ionic solids conduct electricity in the molten state but not in the so...

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  16. Name the solvent in which ionic compounds are generally soluble.

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  17. Zinc granules are placed in each of the four solutions A,B,C and D as ...

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  18. Which of the following reaction does not occur:

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  19. Ferrous sulphate crystals are dissolved in water. The colour of the so...

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  20. Two beakers A and B contain iron sulphate solution. In beaker A, a sma...

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