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What are allotropes ? Sketch the structu...

What are allotropes ? Sketch the structure of two allotropes of carbon of structure on physical properties of two allotropes ?

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CHHAYA PUBLICATION-SOME p-BLOCK ELEMENTS-SOLVED NCERT EXERCISE
  1. Explain why is there a phenomenal decrease in ionisation enthalypy for...

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  2. How would you explain the lower atomic radius of Ga as compared to Al ...

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  3. What are allotropes ? Sketch the structure of two allotropes of carbon...

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  4. Classify following oxides as neutral, acidic, basic or amphoteric : CO...

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  5. Write suitable chemical equations to show their natural.

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  6. In some reactions thallium resembles aluminium, whereas in others it r...

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  7. When metal X is treated with sodium hydroxide, a white precipitate (A)...

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  8. What do you understand by inert pair effect ?

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  9. What do you understand by allotropy ?

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  10. What do you understand by catenation ?

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  11. A certain salt X, gives the following result. Its aqueous solution i...

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  12. A certain salt X, gives the following result. It swells up to a glas...

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  13. A certain salt X, gives the following result. When conc. H2SO4 is ad...

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  14. Write balanced equations for, BF3 + LiHto

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  15. Write balanced equations for, B2H6 + H2O to

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  16. Write balanced equations for, NaH+B2H6to

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  17. Write balanced equations for, H3BO3 overset(Delta)to

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  18. Write balanced equations for, Al+ NaOH to

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  19. Write balanced equations for, B2H6 + NH3 to

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  20. Give one method for industrial preparation and one for laboratory prep...

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