a$)$ Compute $5$ day $25C$ and $10$ day $30C$ BOD values for a waste water of a sample in which $100$

$\frac{m}{?}$ waste water is diluted with $900ml$ distilled water. The sample was incubated for $3$ days and

the BOD of the sample was found to be $30m\frac{g}{L}$ at $20C.$ Also calculate the amount of oxygen

remaining after $5$ days if temperature has changed to $27C.$ Assume, $K$ at $20C=0\mathrm{.}17$ per day.

Also compute the probable value of COD from the above data?

Pas: $1$