What is pure substance? - Thermodynamics

Q.  The substance which is homogeneous and invariable in chemical composition throughout its mass is called as ____.
- Published on 21 Aug 15

a. ideal substance
b. pure substance
c. solid substance
d. none of the above

ANSWER: pure substance
 
Pure substances have homogeneous and invariable chemical composition throughout its mass. Atmospheric air, combustion products of fuel are the examples of pure substance.

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