Atmospheric Pressure

Q. Which of these is defined as “Standard Pressure”?

1. 14.7 psi
2. 1 atm
3. 760 torr
4. all the above

Q.

Why does atmospheric pressure decrease as we move upwards from the surface of the earth?

Q. When we press the bulb of a dropper with its nozzle inside water, the air present in the bulb escapes in form of bubbles. Once we release pressure on the bulb, water gets filled in the dropper. The rise of water in the dropper is driven by_________.

1. pressure inside the dropper
2. gravity of Earth
3. shape of rubber bulb
4. pressure difference

Q.

Question 10
When we press the bulb of a dropper with its nozzle kept in water, air in the dropper is seen to escape in the form of bubbles. Once we release the pressure on the bulb, water gets filled in the dropper. The rise of water in the dropper is due to

(a) pressure of water
(b) gravity of the earth
(c) shape of rubber bulb
(d) atmospheric pressure

Q. The empty space above mercury in a simple barometer is called _______vaccum

1. pressure
2. barometric
3. torricellian
4. mercuric