Which of the following statements is wrong?

Which of the following is a product formed during the electrolysis of brine?

Silver is extracted from which of the following ore?

Copper is extracted from low grade copper ores.

What type of extraction is the carbon monoxide reduction process used for?

Which of the following is an electrolyte used during the electrolytic refining of copper?

Which of the following is present in aluminium bronze alloy?

What is the process used to recover the metal from its soluble complex obtained after leaching?