Free air is the air at

1.	Free air is the air at
A.	Atmospheric conditions at any specific location
B.	20¬¨‚àûC and 1 kg/cm¬¨‚â§ and relative humidity of 36%
C.	0¬¨‚àûC and standard atmospheric conditions
D.	15¬¨‚àûC and 1 kg/cm¬¨‚â§
Answer» B. 20¬¨‚àûC and 1 kg/cm¬¨‚â§ and relative humidity of 36%

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