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Explain why diamond is hard but graphite...

Explain why diamond is hard but graphite is soft.

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CHHAYA PUBLICATION-SOME p-BLOCK ELEMENTS-SHORT -TYPE QUESTIONS
  1. Is boric acid a protonic acid? Explain.

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  2. When phenolphthalein is added to an aqueous solution of borax, the sol...

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  3. Explain why diamond is hard but graphite is soft.

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  4. Graphite is a conductor of electricity but diamond is not-why?

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  5. Explain why carbon monoxide is a poisonous gas.

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  6. SiCl4 undergoes easy hydrolysis but C Cl4 does not undergo hydrolysis-...

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  7. CO2 gets absorbed in alkaline solution but CO does not under ordinary ...

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  8. CO is a superior fuel-why?

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  9. How will you get pure nickel using carbon monoxide?

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  10. Explain why solid carbon dioxide is called dry ice.

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  11. Give example: Two solids combine to give a liquid.

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  12. Explain why diamond appears to be very bright and lustrous.

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  13. (SiH3)3N is weaker base than (CH3)3N- why ?

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  14. CO cannot be dried by concentrated sulphuric acid -why?

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  15. N(CH3)3 is pyramidal but N (SiH3)3 is planar-explain.

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  16. Carbon exhibits catenation property but lead does not-why?

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  17. Which are called methanides?

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  18. (CH3)3SiOH is more acidic than (CH3)3COH, even though carbon is more e...

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  19. Silicon is unable to form structure like graphite-why?

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  20. Mention one property of fullerene which differs from that of diamond a...

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