Unit of atompheric pressure is :
(a) Mercury
(b) Bar
(d) Calcius
(c) Pascal
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Pascal.
The unit of pressure in the SI system is the pascal (Pa), defined as a force of one Newton per square meter N/m 2
The conversion between atm, Pa, and torr is as follows: 1 atm = 101325 Pa.
Atmospheric pressure is expressed in several different systems of units: millimetres (or inches) of mercury, pounds per square inch (psi), dynes per square centimetre, millibars (mb), standard atmospheres, or kilopascals.
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