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…………………….. Is used as a rocket fuel igni...

…………………….. Is used as a rocket fuel igniter.

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Amorphous boron
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FULL MARKS-p-BLOCK ELEMENTS -I-Additional Questions -Fill in the blanks
  1. General formula of metal boride is ………………. .

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  2. Boron has the capacity of absorb……………………. .

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  3. …………………….. Is used as a rocket fuel igniter.

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  4. …………………………. Is essential for the cell walls of plants.

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  5. ……………… is a chemical formula of borax.

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  6. ………………………… is used for the identification of coloured metal ions.

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  7. …………………….is a colourless transparent crystal.

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  8. Boric acids has a …………………….. Structure.

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  9. Boric acid consists of …………………… unit.

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  10. On heating magnesium boride with HCl a mixture of volatile. …………….. Ar...

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  11. Diborane reacts with methylalcohol to give……………………

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  12. Diborane has ……………….. B-H bonds.

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  13. In diborane, the boron is ………………. Hybridised.

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  14. …………………. Is inorganic benzene.

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  15. Boron trifluoride has a …………………… geometry.

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  16. Anhydrous aluminium chloride is a……………. Substance.

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  17. With excess of NaOH aluminium chloride produces.

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  18. ………… is used for the manufacture of petrol by cracking the mineral oil...

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  19. ………………….. Is used for water proofing and textiles.

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  20. ……………… is the most stable alotropic form of carbon at normal temperatu...

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