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Question

A sponge is a __________. 
  1. solid
  2. liquid
  3. gases 
  4. semi-solid


Solution

The correct option is A solid
Sponge is a solid having tiny pores in it, which traps air. When we try to compress a sponge by applying pressure on it, the air trapped in these holes escape out. Hence, the sponge gets compressed.

However, when the applied pressure is removed, it comes back to its original shape. Hence, even though sponge is compressible, it is a solid.

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