Environment issue Test - 4

In 1858, a powerful stench terrorised London for two months. The source of what's now known as the Great Stink was the River Thames, into which the city's sewers emptied and the hot weather made the smell of untreated human waste worse.

The smog that contains soot particles and poisonous gas SO₂ is known as killer fog or pea-souper.

Lake Karachay in Central Russia was named by the Worldwatch Institute as the most polluted spot on Earth in 1960. It served as a disposal site for the Soviet Union.

2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) exposure was involved in Servaso disaster. It led to several diseases, like neuropathy, diabetes and gastrointestinal cancer.

Severe mercury poisoning causes minamata disease in exposed individuals.

Pink disease is caused due to chronic exposure to mercury.

North Pacific gyre is heavily contaminated with plastic waste known as Great Pacific Garbage Patch.

Water vapour is the most abundant greenhouse gas and chlorofluorocarbons are the least abundant greenhouse gas.

Wet scrubbers are the devices that remove pollutants, especially SO₂, from a furnace flue gas or from any other gas stream. In wet scrubbers, the polluted gas stream is brought in contact with a scrubbing liquid to remove pollutants.

Nurdles are the major plastic pollutants of ocean waters. Due to their small size, they end up in oceans through rivers and streams.