345330 Biochemical Oxygen Demand (BOD) may not be a good index for pollution in water bodies receiving effluents from

345331 Choose the incorrect pair.

345332 How many statements are correct?
i. Automobiles are major cause for atmospheric pollution atleast in metro cities.
ii. Water which contain \(0.1 \%\) of impurities is harmful for drinking.
iii. As organic matter increased BOD decreases.
iv. High concentration of DDT affect \(\mathrm{Ca}-\) metabolism in birds.

345333 The green scum seen in the fresh water bodies is:

345330 Biochemical Oxygen Demand (BOD) may not be a good index for pollution in water bodies receiving effluents from

345331 Choose the incorrect pair.

345332 How many statements are correct?
i. Automobiles are major cause for atmospheric pollution atleast in metro cities.
ii. Water which contain \(0.1 \%\) of impurities is harmful for drinking.
iii. As organic matter increased BOD decreases.
iv. High concentration of DDT affect \(\mathrm{Ca}-\) metabolism in birds.

345333 The green scum seen in the fresh water bodies is:

345330 Biochemical Oxygen Demand (BOD) may not be a good index for pollution in water bodies receiving effluents from

345331 Choose the incorrect pair.

345332 How many statements are correct?
i. Automobiles are major cause for atmospheric pollution atleast in metro cities.
ii. Water which contain \(0.1 \%\) of impurities is harmful for drinking.
iii. As organic matter increased BOD decreases.
iv. High concentration of DDT affect \(\mathrm{Ca}-\) metabolism in birds.

345333 The green scum seen in the fresh water bodies is:

345330 Biochemical Oxygen Demand (BOD) may not be a good index for pollution in water bodies receiving effluents from

345331 Choose the incorrect pair.

345332 How many statements are correct?
i. Automobiles are major cause for atmospheric pollution atleast in metro cities.
ii. Water which contain \(0.1 \%\) of impurities is harmful for drinking.
iii. As organic matter increased BOD decreases.
iv. High concentration of DDT affect \(\mathrm{Ca}-\) metabolism in birds.

345333 The green scum seen in the fresh water bodies is: