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"Graphite acits as a better lubricant on...

"Graphite acits as a better lubricant on the moon compared to that on earth" - Justify the validity of the statement.

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The statement is not correct. Different substances like air, water vapour and other gaseous materials enter into the layers of graphite when it is on earth, thus enhancing its lubricating property. However, moon is devoid of atmosphere. Thus, due to absence of water vapour and gaseous substances, the lubricating property of graphite is quite less on the moon.
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CHHAYA PUBLICATION-SOME p-BLOCK ELEMENTS-QUESTION-ANSWER ZONE FOR BOARD EXAMINATION ( SHORT ANSWER TYPE)
  1. Using chemical reactions show that aluminuum is amphoteric in nature.

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  2. Mention 3 similarities in the nature of B and Si.

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  3. "Graphite acits as a better lubricant on the moon compared to that on ...

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  4. Explain why PbCl4 is a good oxidising agent.

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  5. Why do nitrogen and carbon monoxide show similarities in their physica...

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  6. Give reasons Graphite is used as lubricant.

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  7. Unlike diamond, graphite is a good conductor of electricity-explain.

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  8. Diamond is extremely hard but graphite is soft and slippery -explain w...

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  9. Diamond is a bad conductor of electricity but a very good conductor of...

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  10. In spite of being a covalent substance, the melting point of diamond i...

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  11. CO is an inflammable gas while CO2 is not-why?

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  12. How does carbon dioxide function as a fire extinguisher ? Burning magn...

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  13. Carbon monoxide possesses both oxidising and reducing properties - why...

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  14. How will you convert a mixture of CO and CO2 completely into CO2 ?

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  15. How will you convert a mixture of CO and CO2 completely into CO ?

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  16. [SiF6]^(2-) is known to exist whereas [CF6]^(2-) does not exist. Expla...

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  17. Aqueous solution of sodium hydroxide is added drop wise to solution of...

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  18. Difine buckyball. How is it made ?

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  19. CO is readily absorbed by ammoniacal cuprous chloride solution but CO2...

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  20. Why is orthoboric acid used in talcum powders?

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