Question

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Answer 1

Answer:

A) sponge have tiny holes present in it and when we squeeze it the air moves out.

B) evaporation causes cooling because the heat present on surface evaporates and water starts cooling the surface

C) Naphthalene balls dissappears because it is a sublimation substance.

D) Air is used to inflate tires because the pressure of air is more in tire.

Answer 2

HERE'S YOUR ANSWERS

HEY THERE,

a)The sponge is compressible being a solid because of the presence of air cavities inside it. The sponge has numerous pores in it which can be referred to as air cavities, in which air is trapped and on compressing it comes out of the sponge.

These pores are the reason why sponge can easily soak liquid into it.

b) Evaporation causes cooling because the process requires heat energy. The energy is taken away by the molecules when they convert from liquid into gas, and this causes cooling on the original surface.

c)Naphthalene balls undergo sublimation due to which it converts directly into vapours and disappear into air without leaving any solid.

d)Air is Used to inflate types because Air is compressible and can be compressible upto some extent of pressure

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