[Solved] What Is The Normal Air Pressure At Sea Level?

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Download Solution PDFWhat is the normal air pressure at sea level? This question was previously asked in SSC CHSL Previous Paper 120 (Held On: 19 March 2020 Shift 1) Attempt Online View all SSC CHSL Papers >
  1. 1013.25 millibars
  2. 985.14 millibars
  3. 886.13 millibars
  4. 1100.12 millibars

Answer (Detailed Solution Below)

Option 1 : 1013.25 millibars Crack Current Affairs - February 2026 E- book with India's Super Teachers FREE Demo Classes Available* Explore Supercoaching For FREE Free Tests View all Free tests > Free SSC CHSL Tier-1 2024: Official Paper (Held On: 01 Jul, 2024 Shift 1) 1.9 Lakh Users 100 Questions 200 Marks 60 Mins Start Now

Detailed Solution

Download Solution PDF

The correct answer is 1013.25 millibars.

Important Points

  • The normal air pressure at sea level is 1,013.2 millibars.
  • The air at the surface is denser due to gravity, which hence has greater pressure.
  • Air pressure is measured using a mercury barometer or aneroid barometer.
  • The value of what we call standard sea-level pressure is 760mm of mercury, 1013.25 x103 dynes per square centimeter, 14.70 pounds per square inch, 1013.25 millibars, or simply one standard atmosphere which is 101.325 kilopascals.
  • The air majorly contains 72 percent nitrogen and 21 percent oxygen, in addition to a small amount of carbon dioxide, hydrogen, etc.
  • Air has weight and thus, like liquids, it exerts pressure.
  • A force is exerted by the atmospheric air on all objects in the atmosphere and on the earth.
  • The force or thrust exerted on a unit area by the atmospheric air is defined as atmospheric pressure.
  • 1.013 x 105 Pa is the approximate value of atmospheric pressure on the earth's surface.
  • The standard atmospheric pressure is 0.760 mHg at 0 °C.
  • This is a pressure equal to 101325 Pa.
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