Tag: important points about atmospheric pressure

Questions Related to important points about atmospheric pressure

$2\ kg$ of water is converted into steam by boiling at atmospheric pressure. The volume changes from $2\times 10^{-3}\ m^{3}$ to $3.34\ m^{3}$. The work done by the system is about

physics pressure common consequences of the atmospheric pressure atmospheric pressure and its consequences important points about atmospheric pressure

  1. $-340\ kJ$

  2. $-170\ kJ$

  3. $170\ kJ$

  4. $340\ kJ$

Show answer
Correct Option: A

On the surface of earth, the atmospheric pressure is minimum at the sea-level.

physics pressure common consequences of the atmospheric pressure atmospheric pressure and its consequences important points about atmospheric pressure

  1. True

  2. False

Show answer
Correct Option: B

Match List I with List II and select the correct answer by using the codes given the lists.

List I List II
A. Baremeter $1$. Used for Measuring altitudes and angles in navigation and astronomy
B. Chronometer $2$. Used for measurement of angular distances between two digits
C. Sextant $3$. Keeps the accurate time as the one that is used to determine longitude at sea
D. Quadrant $4$. Used for measuring atmospheric pressure
$5$. An instrument used in the diagnosis of pregnancy
physics pressure common consequences of the atmospheric pressure atmospheric pressure and its consequences important points about atmospheric pressure

  1. A-$1$, B-$4$, C-$2$, D-$3$

  2. A-$4$, B-$2$, C-$5$, D-$1$

  3. A-$2$, B-$3$, C-$5$, D-$4$

  4. A-$4$, B-$3$, C-$2$, D-$1$

Show answer
Correct Option: D

As the vertical height from mean sea level increases, the atmospheric pressure decreases.

physics pressure in fluids and atmospheric pressure common consequences of the atmospheric pressure atmospheric pressure and its consequences important points about atmospheric pressure

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

With increase in vertical height, the atmospheric pressure falls. Fall in pressure means that the temperature also falls. This is because pressure is directly proportional to Temperature and vice versa.

How does atmospheric pressure change with the change in altitude 

physics pressure in fluids and atmospheric pressure common consequences of the atmospheric pressure atmospheric pressure and its consequences important points about atmospheric pressure

  1. pressure increases

  2. pressure decreases

  3. pressure remains same

  4. cant say

Show answer
Correct Option: B
Explanation:

Pressure decreases with the increase in altitude.

The atmospheric pressure at sea level is :

physics pressure in fluids and atmospheric pressure common consequences of the atmospheric pressure atmospheric pressure and its consequences important points about atmospheric pressure

  1. 0.76 cm of Hg column

  2. 76 m of Hg column

  3. 76 cm of Hg column

  4. 76 cm of water column

Show answer
Correct Option: C
Explanation:

atospheric pressure=760 mm of hg=76 cm of hg

A hydrogen-filled balloon expands as it rises and may even burst after rising very high in the atmosphere. This happens because

physics pressure in fluids and atmospheric pressure common consequences of the atmospheric pressure atmospheric pressure and its consequences important points about atmospheric pressure

  1. The temperature increases with height

  2. The temperature decreases with height

  3. The atmospheric pressure increases with height

  4. The atmospheric pressure decreases with height

Show answer
Correct Option: D
Explanation:

The atmospheric pressure exists due to weight of atmospheric gases above a certain given height. As one goes high, the weight of atmosphere above decreases and so does the pressure. Thus for a balloon filled on ground, the pressure inside the balloon exceeds that outside and thus it bursts.

Why nose bleed when we go at high attitudes:

physics pressure in fluids and atmospheric pressure common consequences of the atmospheric pressure atmospheric pressure and its consequences important points about atmospheric pressure

  1. because of decrease in temperature.

  2. because of decrease in air pressure.

  3. because of change in composition of air.

  4. all

Show answer
Correct Option: B
Explanation:

Air pressure decreases at high altitudes because the density of air decreases. It may cause the nose to bleed, especially if the individual has high blood pressure

Atmospheric pressure .................... with altitude

physics pressure in fluids and atmospheric pressure common consequences of the atmospheric pressure atmospheric pressure and its consequences important points about atmospheric pressure

  1. increases

  2. decreases

  3. remain constant

  4. none

Show answer
Correct Option: B
Explanation:

Atmospheric pressure decreases with altitude due to decrease in height of the air column, which causes a linear decrease in atmospheric pressure

Consider the following statements and identify the right ones.
I)Air pressure decreases when air descends.
ii) Air pressure at sea level is lower than at the mountain top.

physics pressure in fluids and atmospheric pressure common consequences of the atmospheric pressure atmospheric pressure and its consequences important points about atmospheric pressure

  1. i only

  2. ii only

  3. Both

  4. None

Show answer
Correct Option: D
Explanation:

Air pressure increases when air descends and air pressure at sea level is more than at the mountain top, thus option D is correct.