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Give reasons (vi) Aluminium utensils can...

Give reasons (vi) Aluminium utensils cannot be kept in water overnight

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The correct Answer is:
Al rescts with water and the dissolved oxygen in it form an oxide layer on the surface of utensil. A small amount of oxide will dissolve in water to form `Al^(3+)` ions which are harmful to human health.
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A N EXCEL PUBLICATION-THE P-BLOCK ELEMENTS-QUESTION BANK
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  2. Give reasons (v) Al alloys are used to make aircraft body

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  3. Give reasons (vi) Aluminium utensils cannot be kept in water overnight

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  4. Give reasons (vii) Aluminium wire is used to make transmission cables.

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  6. Classify the oxides as neutral, acidic amphoteric and basic CO, B2O3...

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  7. A certain salt X gives the following reactions (i) Its aqueous solutio...

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  8. A certain salt X gives the following reactions (ii) It swells up to a ...

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  9. A certain salt X gives the reaction,When Con.H2SO4 is added to a hot s...

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  10. Write balanced equation for BF3+LiH rarr

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  11. Write balanced equation for B2H6+H2O rarr

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  12. Write balanced equation for NaH+B2H6 rarr

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  13. Write balanced equation for H3BO3 rarr

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  14. Write balanced equation for Al+NaOH rarr

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  15. Write balanced equation for B2H6+NH3 gives

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  16. The aqueous solution of borax is

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  17. Boric acid is polymeric due to -----

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  18. Hybridisation of boron in B2H6 is -----

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  19. Thermodynamically, the most stable allotrope of carbon is……………..

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  20. The Elements of group 14 show ----- oxidation states

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