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Give reasons Graphite is used as lubri...

Give reasons
Graphite is used as lubricant.

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Graphite possess hexagonal layered structure. These layers slip over one another becaused they are held by weak van der Waals forces. Hence it acts as lubracant.
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CHHAYA PUBLICATION-SOME p-BLOCK ELEMENTS-SOLVED NCERT EXERCISE
  1. Give reasons Conc. HNO3 can be transported in aluminium container.

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  2. Give reasons A mixture of dilute NaOH and aluminium pieces is used t...

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  3. Give reasons Graphite is used as lubricant.

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  4. Give reasons Diamond is used as an abrasive.

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  5. Give reasons Aluminium alloys are used to make aircarft body.

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

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

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  8. Explain why is there a phenomenal decrease in ionisation enthalypy for...

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

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

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

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  12. Write suitable chemical equations to show their natural.

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

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

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  15. What do you understand by inert pair effect ?

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  16. What do you understand by allotropy ?

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  17. What do you understand by catenation ?

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

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

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

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