Sound becomes hazardous noise pollution at level

When was Water (Prevention and Control of Pollution) Act passed by the Government of India ?

A mere ………………… impurities make water contaminated with domestic sewage unfit for human use.

What is the outcome of algal bloom ?

When there are excessive microorganisms in the water that cause biodegradation there is

Which two substances are well-known for biomagnification ?

Choose the correct statement

Which major pollutant is released from electricity generating units ?

Which of the statement is incorrect with reference to thermal waste water ?

Choose the incorrect statement from the following statements