Answers

2014-06-17T16:52:20+05:30
sponge is not a pure solid, it's a combination of gas in solid, it's solid bcoz it has strong inter molecular force btw molecules but can b compressed bcoz of it's air filled poures throughout
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2014-06-17T17:47:05+05:30
It has pores in which air is trapped.
when we apply pressure, these trapped air is expelled from it and thus the size is reduced.
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