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Give reasons A mixture of dil. NaOH a...

Give reasons
A mixture of dil. NaOH and aluminium pieces in used to open drain.

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A mixture of dil.NaOH and aluminium pieces is used to open drain because it acts as cleaning agent.
`2Al + 2NaOH to 2NaAlO_2 + H_2`
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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-THE P-BLOCK ELEMENTS GROUP-13-Short Answer Questions
  1. What happens when Aluminium is heated with dilute NaOH ?

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  2. What happens when BF3 is treated with ammonia ?

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  3. What happens when Hydrated alumina is treated with aq.NaOH solution ?

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

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  5. Give reasons A mixture of dil. NaOH and aluminium pieces in used to...

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  6. Give reasons Aluminium alloys are used to make aircraft body

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

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  8. Give reasons Aluminium wire is used to make transmission cables .

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  9. Explain why the electronegativity of Ga, In and Tl will not vary very ...

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  10. Explain borax bead test with a suitable example

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  11. Explain the structure of diborane.

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  12. Explain the reactions of aluminium with acids.

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  13. Write a short note on the anomalous behaviour of boron in the group - ...

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  14. Aluminium reacts with dil. HNO3 but not with conc. HNO3-explain.

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  15. Give two methods of preparation of diborane.

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  16. How does diborane react with H2O ?

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  17. How does diborane react with CO ?

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  18. How does diborane react with N(CH3)3 ?

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  19. Al2O3 is amphoteric -explain with suitable reactions.

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  20. Na2B4O7 + Conc. H2SO4 to A underset"(ii) Ignite"overset((i)C2H5OH)to B...

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