Which two claims about copper smelting plants are genuinely documented environmental concerns?

Copper slag leaching heavy metals and release of sulphur dioxide. Copper slag can leach heavy metals into the ground. Smelting also releases sulphur dioxide. Carbon monoxide is not the documented concern. Read more: EnvEco0093 — Why Copper Smelting Plants Concern Environmental Regulators.

Which pollutant linked to copper smelting mainly damages the kidney and bones?

Cadmium. ATSDR says cadmium damages the kidney and bones. Repeated exposure builds up in the kidneys. Lead mainly targets the nervous system. Read more: EnvEco0093 — Why Copper Smelting Plants Concern Environmental Regulators.

A major brownfield expansion adding 300 KTPA of capacity is planned at which Hindalco smelting complex?

Dahej, Gujarat. Hindalco's 2024-25 report says the Dahej expansion will add 300 KTPA. It would raise refined copper output to 721 KTPA. Sterlite at Tuticorin is closed. Read more: EnvEco0093 — Why Copper Smelting Plants Concern Environmental Regulators.

On which date was the Supreme Court judgment dismissing Vedanta's appeals against the Madras High Court order on the Sterlite plant dated?

29 February 2024. The judgment text is dated 29 February 2024. The Court cited the repeated and severe breaches. The February 2019 ruling was only about the NGT's jurisdiction. Read more: EnvEco0093 — Why Copper Smelting Plants Concern Environmental Regulators.

In the CPCB's classification of industries, which category includes the copper smelter?

Red. The CPCB Red category list includes the copper smelter. Red marks the industries that pollute the most. Read more: EnvEco0093 — Why Copper Smelting Plants Concern Environmental Regulators.

According to a 2025 review, roughly what share of copper slag generated worldwide is used commercially?

About 15%. The review says only about 15% of copper slag is used commercially. The main concern with the rest is leaching of heavy metals into the ground. Read more: EnvEco0093 — Why Copper Smelting Plants Concern Environmental Regulators.

Which company began a 0.5 MT copper unit at Mundra in March 2024?

Kutch Copper (Adani Group). The Mines Ministry says Adani's Kutch Copper began its 0.5 MT unit at Mundra in March 2024. India has been a net importer of cathodes since Tuticorin closed. Read more: EnvEco0093 — Why Copper Smelting Plants Concern Environmental Regulators.

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Why is there a concern about copper smelting plants? 1. They may release lethal quantities of carbon monoxide into environment. 2. The copper slag can cause the leaching of some heavy metals into environment. 3. They may release sulphur dioxide as a pollutant. Select the correct answer using the code given below.

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