Q: If the BOD in the beginning and in the end of test are respectively 13 and 8 ppm and if the dilution factor is 100, then the 5–day BOD (ppm) will be: यदि परीक्षण के प्रारम्भ में और अन्त में BOD क्रमश: 13 और 8 ppm है और यदि तनुकरण गुणांक 100 है, तब 5 दिन BOD (ppm) होगा–
A.
200
B.
800
C.
1300
D.
500
Correct Answer:
Option D -
Explanations:
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