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Which one is the hardest allotrope of ca...

Which one is the hardest allotrope of carbon? Answer with reason.

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CHHAYA PUBLICATION-SOME p-BLOCK ELEMENTS-SOLVED WBCHSE SCANNER
  1. How is producer gas manufactured?

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  2. What is active charcoal? Mention one of its uses.

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  3. Which one is the hardest allotrope of carbon? Answer with reason.

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  4. Why PbO2 is oxidising?

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  5. Explain why TlCl is known but Al Cl is not known.

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  6. Which of the following is thermodynamically most stable form of carbon...

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  7. PbCl4 is less stable than SnCl4 while PbCl2 is more stable than SnCl2....

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  8. Explain why C Cl4 is not hydrolysed while SiCl4 is hydrolysed.

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  9. What happens when borax is heated strongly?

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  10. Why are the dihalides of carbon unstable but the dihalides of tin and ...

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  11. Why is the aqueous solution of borax alkaline?

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  12. What happens when at first lesser amount and then excess amount of NaO...

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  13. Explain with reason: SnCl2 is a solid ionic compound whereas SnCl4 is ...

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  14. Explain the phenomenon: When phenolphthaline is added to aqueous solut...

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  15. What is inorganic benzene? How does it prepare? State with conditions ...

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  16. Why graphite is a conductor of electricity but diamond is not?

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  17. Which of the following has a bridge bond-

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  18. SiCl4 undergoes hydrolysis, but C Cl4 does not-explain.

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  19. What happens when boric acid is mixed with potassium bifluoride soluti...

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  20. Draw one canonical structure of CO2.

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