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Why coffee runs up into a sugar lump (a ...

Why coffee runs up into a sugar lump (a small cube of sugar) when one corner of the sugar lump is held in the liquid?

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When one corner of the sugar lump is held in coffee, a very large number of narrow capillaries are formed in it. Due to capillary action, coffee rushes (runs up) through a small cube of sugar.
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PREMIERS PUBLISHERS-PROPERTIES OF MATTER-EVALUTION TEXTBOOK QUESTIONS & ANSWERS (NUMERICAL PROBLEMS )
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  6. Why coffee runs up into a sugar lump (a small cube of sugar) when one ...

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  9. Why the passengers are advised to remove the ink from their pens while...

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  10. We use straw to suck soft drinks, why ?

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  11. A cappilary of diameter d mm is dipped in water such that the water ri...

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  12. A cylinder of length 1.5 m and diameter 4 cm is fixed at one end. A ta...

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    |

  13. A spherical soap bubble A of radius 2 cm is formed inside another bubb...

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    |

  14. A block of Ag of mass x kg hanging from a string is immersed in a liqu...

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  15. The reading of pressure meter attached with a closed pipe is 5 xx 10^(...

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  16. Why coffee runs up into a sugar lump (a small cube of sugar) when one ...

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  17. Why two holes are made to empty an oil tin ?

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  18. We can cut vegetables easily with a sharp knife as compared to a blunt...

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    |

  19. Why the passengers are advised to remove the ink from their pens while...

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  20. We use straw to suck soft drinks, why ?

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