The concentration of dissolved oxygen $(DO)$ in cold water can go up to ......... $ppm$.
- A$14$
- B$8$
- C$10$
- D$16$
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View SolutionTwo statements are given below.
Statement-$I$: In dry cleaning,the solvent $Cl_2C=CCl_2$ was earlier used and now it is replaced by liquified $CO_2$.
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Statement-$I$: In dry cleaning,the solvent $Cl_2C=CCl_2$ was earlier used and now it is replaced by liquified $CO_2$.
Statement-$II$: In bleaching of paper,$H_2O_2$ was used earlier and now it is replaced by chlorine gas.
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