Browse Questions

# Chemical oxygen is determined by using

$\begin{array}{1 1}(a)\;Methyl\;orange&(b)\;K_2Cr_2O_7+50\%H_2SO_4\\(c)\;CaOCl_2+50\%H_2SO_4&(d)\;Alum+CaO\end{array}$

Chemical oxygen is determined by using $K_2Cr_2O_7+50\%H_2SO_4$
Hence (b) is the correct answer.