1.

If \[5.0gm\] of \[BaC{{l}_{2}}\] is present in \[{{10}^{6}}gm\] solution, the concentration is

A.                 1 ppm    
B.                 5 ppm
C.                 50 ppm 
D.                 1000 ppm
Answer» C.                 50 ppm 


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