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How can borax be prepared from colemanit...

How can borax be prepared from colemanite ?

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PATHFINDER-SOME P-BLOCK ELEMENTS-QUESTION BANK
  1. How the oxide of group 13 differ in their nature ? State with examples...

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  2. Why is atomic radius of Gallium less than that of Aluminium ?

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  3. How can borax be prepared from colemanite ?

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  4. Write the correct formula of borax and structure of it's anion.

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  5. Explain the phenomenon : "When phenolphethaline is added to aqueous so...

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  6. What is the shape of BO3^(-3) ion ?

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  7. How will BCI3 and CCI4 will react with water ?

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  8. What is the type of hybridisation of Boron in diborane ?

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  9. Give reasons Conc. HNO3 can be transported in aluminium container.

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  10. Give reasons Graphite is used as lubricant.

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  11. Give reasons Aluminium utensils should not be kept in water overnigh...

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  12. Give reasons CCl4 is used in fire extinguisher.

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  13. Give reasons Stannous chloride and Ferric chloride cannot be kept in...

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  14. Write balanced equation for the following BF3+LiHrarr

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  15. Write balanced equation for the following B2H6+H2Orarr

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  16. Write balanced equation for the following NaH+B2H6rarr

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  17. Write balanced equation for the following B2H6+ NH3rarr

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  18. Write balanced equation for the following Al4C3+12H2Orarr

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  19. Identify A,B, C, D in the following reactions.

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  20. What happens when silica is treated with HF ? Give equation.

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