318585
Less polluted water sample among the following is
1 2 milliequivalents of \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) (in \(50 \%\) \(\mathrm{H}_{2} \mathrm{SO}_{4}\) ) consumed for \(100 \mathrm{~kg}\) water sample on oxidizing the pollutant
2 2 milliequivalents of oxygen consumed for oxid-izing the pollutant in 1000 litre of water sample
3 \(0.2 \mathrm{~g}\) of oxygen consumed for oxidizing the pollutant million parts of water
4 \(49 \times 10^{-3} \mathrm{~g}\) of \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) units (in \(50\% \,\,{{\text{H}}_2}{\text{S}}{{\text{O}}_4}\) ) is required to oxidize the pollutant in 106 \(\mathrm{mL}\) of water sample.
Explanation:
Conceptual Questions
CHXI14:ENVIRONMENTAL CHEMISTRY
318586
Chemical Oxygen Demand of a sample of \(\mathrm{H}_{2} \mathrm{O}\), is the amount of oxygen
1 Liberated when excess of \(\mathrm{H}_{2} \mathrm{O}_{2}\) is added to a known volume of \(\mathrm{H}_{2} \mathrm{O}\)
2 Consumed by 1 litre of the sample of \(\mathrm{H}_{2} \mathrm{O}\) at \(1 \mathrm{~atm} ; 27^{\circ} \mathrm{C}\)
3 Required to chemically oxidise the organic content of polluted water by \({{\text{K}}_2}{\text{C}}{{\text{r}}_2}{{\text{O}}_7} + 50\% \,\,{{\text{H}}_2}{\text{S}}{{\text{O}}_4}\) in given sample of \(\mathrm{H}_{2} \mathrm{O}\)
4 Consumed by micro organisms in water.
Explanation:
Chemical Oxygen Demand of a sample of \(\mathrm{H}_{2} \mathrm{O}\) is the amount of oxygen required to chemically oxidise the organic content of polluted water by \({{\rm{K}}_{\rm{2}}}{\rm{C}}{{\rm{r}}_{\rm{2}}}{{\rm{O}}_{\rm{7}}}{\rm{ + 50\% }}\,\,{{\rm{H}}_{\rm{2}}}{\rm{S}}{{\rm{O}}_{\rm{4}}}\) in given sample of \(\mathrm{H}_{2} \mathrm{O}\).
318585
Less polluted water sample among the following is
1 2 milliequivalents of \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) (in \(50 \%\) \(\mathrm{H}_{2} \mathrm{SO}_{4}\) ) consumed for \(100 \mathrm{~kg}\) water sample on oxidizing the pollutant
2 2 milliequivalents of oxygen consumed for oxid-izing the pollutant in 1000 litre of water sample
3 \(0.2 \mathrm{~g}\) of oxygen consumed for oxidizing the pollutant million parts of water
4 \(49 \times 10^{-3} \mathrm{~g}\) of \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) units (in \(50\% \,\,{{\text{H}}_2}{\text{S}}{{\text{O}}_4}\) ) is required to oxidize the pollutant in 106 \(\mathrm{mL}\) of water sample.
Explanation:
Conceptual Questions
CHXI14:ENVIRONMENTAL CHEMISTRY
318586
Chemical Oxygen Demand of a sample of \(\mathrm{H}_{2} \mathrm{O}\), is the amount of oxygen
1 Liberated when excess of \(\mathrm{H}_{2} \mathrm{O}_{2}\) is added to a known volume of \(\mathrm{H}_{2} \mathrm{O}\)
2 Consumed by 1 litre of the sample of \(\mathrm{H}_{2} \mathrm{O}\) at \(1 \mathrm{~atm} ; 27^{\circ} \mathrm{C}\)
3 Required to chemically oxidise the organic content of polluted water by \({{\text{K}}_2}{\text{C}}{{\text{r}}_2}{{\text{O}}_7} + 50\% \,\,{{\text{H}}_2}{\text{S}}{{\text{O}}_4}\) in given sample of \(\mathrm{H}_{2} \mathrm{O}\)
4 Consumed by micro organisms in water.
Explanation:
Chemical Oxygen Demand of a sample of \(\mathrm{H}_{2} \mathrm{O}\) is the amount of oxygen required to chemically oxidise the organic content of polluted water by \({{\rm{K}}_{\rm{2}}}{\rm{C}}{{\rm{r}}_{\rm{2}}}{{\rm{O}}_{\rm{7}}}{\rm{ + 50\% }}\,\,{{\rm{H}}_{\rm{2}}}{\rm{S}}{{\rm{O}}_{\rm{4}}}\) in given sample of \(\mathrm{H}_{2} \mathrm{O}\).
318585
Less polluted water sample among the following is
1 2 milliequivalents of \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) (in \(50 \%\) \(\mathrm{H}_{2} \mathrm{SO}_{4}\) ) consumed for \(100 \mathrm{~kg}\) water sample on oxidizing the pollutant
2 2 milliequivalents of oxygen consumed for oxid-izing the pollutant in 1000 litre of water sample
3 \(0.2 \mathrm{~g}\) of oxygen consumed for oxidizing the pollutant million parts of water
4 \(49 \times 10^{-3} \mathrm{~g}\) of \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) units (in \(50\% \,\,{{\text{H}}_2}{\text{S}}{{\text{O}}_4}\) ) is required to oxidize the pollutant in 106 \(\mathrm{mL}\) of water sample.
Explanation:
Conceptual Questions
CHXI14:ENVIRONMENTAL CHEMISTRY
318586
Chemical Oxygen Demand of a sample of \(\mathrm{H}_{2} \mathrm{O}\), is the amount of oxygen
1 Liberated when excess of \(\mathrm{H}_{2} \mathrm{O}_{2}\) is added to a known volume of \(\mathrm{H}_{2} \mathrm{O}\)
2 Consumed by 1 litre of the sample of \(\mathrm{H}_{2} \mathrm{O}\) at \(1 \mathrm{~atm} ; 27^{\circ} \mathrm{C}\)
3 Required to chemically oxidise the organic content of polluted water by \({{\text{K}}_2}{\text{C}}{{\text{r}}_2}{{\text{O}}_7} + 50\% \,\,{{\text{H}}_2}{\text{S}}{{\text{O}}_4}\) in given sample of \(\mathrm{H}_{2} \mathrm{O}\)
4 Consumed by micro organisms in water.
Explanation:
Chemical Oxygen Demand of a sample of \(\mathrm{H}_{2} \mathrm{O}\) is the amount of oxygen required to chemically oxidise the organic content of polluted water by \({{\rm{K}}_{\rm{2}}}{\rm{C}}{{\rm{r}}_{\rm{2}}}{{\rm{O}}_{\rm{7}}}{\rm{ + 50\% }}\,\,{{\rm{H}}_{\rm{2}}}{\rm{S}}{{\rm{O}}_{\rm{4}}}\) in given sample of \(\mathrm{H}_{2} \mathrm{O}\).
318585
Less polluted water sample among the following is
1 2 milliequivalents of \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) (in \(50 \%\) \(\mathrm{H}_{2} \mathrm{SO}_{4}\) ) consumed for \(100 \mathrm{~kg}\) water sample on oxidizing the pollutant
2 2 milliequivalents of oxygen consumed for oxid-izing the pollutant in 1000 litre of water sample
3 \(0.2 \mathrm{~g}\) of oxygen consumed for oxidizing the pollutant million parts of water
4 \(49 \times 10^{-3} \mathrm{~g}\) of \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) units (in \(50\% \,\,{{\text{H}}_2}{\text{S}}{{\text{O}}_4}\) ) is required to oxidize the pollutant in 106 \(\mathrm{mL}\) of water sample.
Explanation:
Conceptual Questions
CHXI14:ENVIRONMENTAL CHEMISTRY
318586
Chemical Oxygen Demand of a sample of \(\mathrm{H}_{2} \mathrm{O}\), is the amount of oxygen
1 Liberated when excess of \(\mathrm{H}_{2} \mathrm{O}_{2}\) is added to a known volume of \(\mathrm{H}_{2} \mathrm{O}\)
2 Consumed by 1 litre of the sample of \(\mathrm{H}_{2} \mathrm{O}\) at \(1 \mathrm{~atm} ; 27^{\circ} \mathrm{C}\)
3 Required to chemically oxidise the organic content of polluted water by \({{\text{K}}_2}{\text{C}}{{\text{r}}_2}{{\text{O}}_7} + 50\% \,\,{{\text{H}}_2}{\text{S}}{{\text{O}}_4}\) in given sample of \(\mathrm{H}_{2} \mathrm{O}\)
4 Consumed by micro organisms in water.
Explanation:
Chemical Oxygen Demand of a sample of \(\mathrm{H}_{2} \mathrm{O}\) is the amount of oxygen required to chemically oxidise the organic content of polluted water by \({{\rm{K}}_{\rm{2}}}{\rm{C}}{{\rm{r}}_{\rm{2}}}{{\rm{O}}_{\rm{7}}}{\rm{ + 50\% }}\,\,{{\rm{H}}_{\rm{2}}}{\rm{S}}{{\rm{O}}_{\rm{4}}}\) in given sample of \(\mathrm{H}_{2} \mathrm{O}\).