Atmospheric pressure decrease rapidly with altitude because the air becomes_______ ?

Related Mcqs:

1. The atmospheric air is held to the Earth by?

   A. gravity
   B. winds
   C. clouds
   D. rotation of the Earth

   Submitted by: Malik Asghar Hussain

2. Atmospheric pressure at sea level is _______?

   A. 746 mm
   B. 760 mm
   C. 820 mm
   D. None of these

   Submitted by: Mansoor Ahmed Suhag

3. _________ means a line on a map connecting points having the same atmospheric pressure at a given time or on average over a given period.

   A. Isobar 
   B. Isobath
   C. Isohel
   D. Isohyet

   Submitted by: Naveed Tahir

4. Atmospheric pressure is the force (per unit-area) perpendicular to a unit-area of planetary surface, as determined by _________.

   A. Mass of vertical column of atmospheric gases
   B. Mass of horizontal column of atmospheric gases
   C. Weight of vertical column of atmospheric gases
   D. Mass of vertical and weight of horizontal of atmospheric gases

   Submitted by: Muhammad Abdullah

5. The height at which atmospheric pressure declines by a factor of e (an irrational number equal to 2.71828) is called __________.

   A. Average height (H)
   B. Scale height (H)
   C. Mean height (H)
   D. Standard height (H)

   Submitted by: Muhammad Abdullah

6. Stratosphere is present at an altitude between _________.

   A. 15 km and 35 km
   B. 17 km and 35 km
   C. 18 km and 35 km
   D. 19 km and 35 km

   Submitted by: Muhammad Abdullah

7. The thermosphere extends from an altitude of ________ to the base of ________ at ________?

   A. 75 km, Mesosphere, 670 km
   B. 80 km, Ionosphere, 680 km
   C. 85 km, Exosphere, 690 km
   D. 90 km, Ozone Layer , 690 km

   Submitted by: Muhammad Abdullah

8. For a fixed mass of gass at constant temperature, if we decrease volume, the pressure will _________?

   A. also decrease
   B. increase
   C. remains constant
   D. none of these

9. A pulsar is a rapidly spinning neutron star which emits:

   A. A blinding light when it aligns with the planets
   B. Radio waves detectable from Earth
   C. A gravitational pull which attracts high energy dust particles
   D. Enough energy to power itself indefinitely

   Submitted by: Mansoor Ul Haque

10. Brass gets discoloured in air because of the presence of which of the following gases in air ________ ?

    A. Carbon dioxide
    B. Oxygen
    C. Nitrogen
    D. Hydrogen sulphide

    Submitted by: Rashid Mehmood