1)What type of metal are extracted by electrolysis method?
2)Name one metal which is obtained by self reduction process.
3)What happens when borax is treated with sulphuric acid?
4)What happens when Mg is treated with conc. HNO3
?
Answers
Answer: 1:
Metals more reactive than carbon, such as aluminium, are extracted by electrolysis, while metals less reactive than carbon, such as iron, may be extracted by reduction with carbon. As gold is so unreactive, it is found as the native metal and not as a compound. It does not need to be chemically separated.
2:Copper
3:On adding a calculated quantity of concentrated sulphuric acid to a hot concentrated solution of borax, boric acid is produced. On heating borax with ethyl alcohol and concentrated sulphuric acid , vapours of triethylborates are produced. When ignited these vapours burn with a green edged flame .
4:=> When Mg reacts with dil. HNO3 then the Magnesium nitrate formed and hydrogen gas liberate.
=> Mg + HNO3 ------> Mg(HNO3)2 + H2
Explanation:please mark me as brainliest