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Chemistry CBSE Live product
Class 8 (2026-27)
Pressure, Winds, Storms, and Cyclones
Atmospheric Pressure
8.
Sucker and air pressure
Question:
3
m.
Help
Arun
to
choose
the correct answers:
1.
What will happen if air enters inside the sucker after it is attached to a surface?
The pressure difference disappears and the sucker falls off
The sucker becomes heavier and sticks more strongly to the surface
The air inside the sucker pushes it more tightly against the wall
The sucker changes its shape and permanently sticks to the wall
2.
What happens when the rubber sucker is pressed against a smooth surface?
The air inside the sucker expands and fills the entire surface
The air inside the sucker is pushed out
The air inside the sucker changes into water droplets
The air inside the sucker turns into a solid layer
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