Atmospheric Pressure — Homi Bhabha Class 6 Chemistry MCQs with Solutions
Free Homi Bhabha Class 6 Chemistry Atmospheric Pressure MCQs with step-by-step solutions (10 questions). Part of Air and Atmosphere. Practise online on Prepizo — no login needed.
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Questions with solutions
Q1 — Atmospheric Pressure · easy · theory
The push of air on everything around us is called …
A. Air (atmospheric) pressure ✓ Correct
B. Magnetic force
C. Water pressure
D. Sound
Solution: Air presses on everything it touches; this push is called air pressure or atmospheric pressure.
Q2 — Atmospheric Pressure · easy · theory
The thick blanket of air that surrounds the Earth is called the …
A. Ocean
B. Atmosphere ✓ Correct
C. Rainbow
D. Ground
Solution: The layer of air wrapped around the Earth is called the atmosphere.
Q3 — Atmospheric Pressure · easy · theory
Air pressure acts …
A. In all directions ✓ Correct
B. Only downwards
C. Only sideways
D. Only upwards
Solution: Air pushes in all directions — up, down and sideways — not just one way.
Q4 — Atmospheric Pressure · easy · theory
Does air have weight?
A. Only smoke has weight
B. No, air has no weight
C. Air weighs nothing at all
D. Yes, air has weight ✓ Correct
Solution: Air is made of gases that do have weight, which is why the atmosphere presses down on us.
Q5 — Atmospheric Pressure · medium · theory
When you sip juice through a straw, the juice rises up because …
A. The straw magically pulls the juice
B. Sucking removes air, so the outside air pressure pushes the juice up ✓ Correct
C. The straw heats the juice
D. The juice is lighter than air
Solution: Sucking lowers the air pressure inside the straw, so the higher air pressure outside pushes the juice up.
Q6 — Atmospheric Pressure · medium · theory
A rubber sucker sticks to a smooth wall mainly because …
A. The wall is sticky
B. It is magnetic
C. It has strong glue on it
D. The outside air pressure presses it against the wall ✓ Correct
Solution: Pressing the sucker pushes the air out from behind it, so the outside air pressure holds it against the wall.
Q7 — Atmospheric Pressure · medium · theory
As we climb higher up a mountain, the air pressure …
A. Stays exactly the same
B. Increases
C. Becomes the highest
D. Decreases ✓ Correct
Solution: There is less air above us as we go higher, so the air pressure decreases with height.
Q8 — Atmospheric Pressure · medium · theory
The instrument used to measure air pressure is a …
A. Barometer ✓ Correct
B. Ruler
C. Magnet
D. Thermometer
Solution: A barometer is the instrument that measures air (atmospheric) pressure.
Q9 — Atmospheric Pressure · hard · theory
Our ears sometimes feel blocked when a plane climbs high or we go up a tall mountain. This happens because …
A. There is no air at all up there
B. The engine is too loud
C. The air pressure outside drops and no longer matches the pressure inside our ears ✓ Correct
D. The air becomes colder
Solution: Higher up, the outside air pressure is lower, so it no longer matches the pressure inside our ears, making them feel blocked.
Q10 — Atmospheric Pressure · hard · theory
An empty plastic bottle is tightly capped at the top of a high mountain and then brought down to the plains. In the plains it gets slightly crushed inward because …
A. There is no air in the plains
B. The higher air pressure in the plains presses in on it ✓ Correct
C. The bottle became heavier
D. The plastic melted on the way down
Solution: The air sealed inside is at the low mountain pressure, but the plains have higher air pressure, which presses the bottle inward.