A) 10 ppm
B) 100 ppm
C) 1000 ppm
D) 10000 ppm
Correct Answer: D
Solution :
\[{{10}^{3}}\] parts of \[CaC{{O}_{3}}\] has number of parts = 10 \[{{10}^{6}}\]parts of \[CaC{{O}_{3}}\] has number of parts \[=\frac{10}{{{10}^{3}}}\times {{10}^{6}}=10,000\,ppm\].
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