Solution : (a) Aluminium cannot be extracted by the smelting process because : <br> (i) `Al`is highly electropositive element and has strong affinity for oxygen.
Which metals can be extracted by smelting?
Lead, iron and zinc can be extracted by smelting process .
Which metals Cannot be extracted?
We can see that among the given elements, zinc (Zn), tin (Sn), and lead (Pb) are less reactive than carbon (C) whereas aluminum (Al) is more reactive than carbon. Therefore option (B) Al metal cannot be extracted by the carbon reduction process.
Can copper be extracted by smelting?
Copper can be extracted from copper-rich ores by heating the ores in a furnace (roasting and smelting). Roasting and smelting both produce poisonous sulfur dioxide (SO2). Thereafter, the impure copper formed can be purified by electrolysis.
Is Aluminium extracted by smelting?
Being electropositive, aluminium has a high affinity for oxygen and can not be extracted through smelting.
What is smelting with example?
Smelting is the process of producing metals from their ores, for example copper and zinc.
What is pig iron?
Pig iron is the product of smelting iron ore (also ilmenite) with a high-carbon fuel and reductant such as coke, usually with limestone as a flux. Charcoal and anthracite are also used as fuel and reductant. Pig iron is produced by smelting or iron ore in blast furnaces or by smelting ilmenite in electric furnaces.
Why some metals Cannot be extracted by thermal reduction?
Alkali metals being a strong reducing agent because they can easily donate electrons. Thus they cannot be extracted by the reduction of their oxides and chlorides.
Which metal is not extracted by the process of electrolysis?
Reason for Iron extraction not by electrolysis : Because iron is a fairly active element, its oxides can be reduced by carbon rather than electrolysis.
Which of the following Cannot be used to extract a metal from its ore?
Reduction with sulphur isn’t used for extraction, therefore, option C is correct.
How do we extract Aluminium?
Extraction of aluminium
Aluminium ore is called bauxite . The bauxite is purified to produce aluminium oxide, a white powder from which aluminium can be extracted. The extraction is done by electrolysis. The ions in the aluminium oxide must be free to move so that electricity can pass through it.
What type of metal is gold?
transition metal
Chemically, gold is a transition metal and a group 11 element. It is one of the least reactive chemical elements and is solid under standard conditions. Gold often occurs in free elemental (native) form, as nuggets or grains, in rocks, veins, and alluvial deposits.
What is extraction of iron?
Iron is extracted from iron ore in a huge container called a blast furnace. Iron ores such as haematite contain iron(III) oxide, Fe 2O 3. The oxygen must be removed from the iron(III) oxide in order to leave the iron behind. Reactions in which oxygen is removed are called reduction reactions.
Can you smelt aluminium?
Fire up the kiln or furnace to 1220°F. This is the melting point of aluminum (660.32 °C, 1220.58 °F), but below the melting point of steel. The aluminum will melt almost immediately once it reaches this temperature.
Which of the given metals Cannot be extracted using smelting Fe Al Zn Pb?
Solution : (a) Aluminium cannot be extracted by the smelting process because :
(i) `Al`is highly electropositive element and has strong affinity for oxygen.
Which is the ore of gold?
Ores. The major ores of gold contain gold in its native form and are both exogenetic (formed at the Earth’s surface) and endogenetic (formed within the Earth). The best-known of the exogenetic ores is alluvial gold. Alluvial gold refers to gold found in riverbeds, streambeds, and floodplains.
What are the two types of smelting?
extraction and refining
…are two types of smelting, reduction smelting and matte smelting.
Who invented smelting?
The development of iron smelting was traditionally attributed to the Hittites of Anatolia of the Late Bronze Age. It was believed that they maintained a monopoly on iron working, and that their empire had been based on that advantage.
What do you mean by smelting Class 8?
Smelting is the process of reducing the roasted metallic oxide to a metal. In this process, impurities are removed by the addition of appropriate flux. It reduces the oxide ore to metals in its molten state.
What is the purest form of iron?
- Purest form of Iron is Wrought Iron.
- Extraction of iron involves the Concentration of Iron involves processes like Roasting and Calcination.
- Now, after concentration the impurities like Sulphur and Carbonates are removed, and the concentrated iron ore is with Limestone and Coke and pour into a Blast furnace.
When was the first steel made?
13th century BC
13th century BC – The earliest evidence of steel production can be traced back to early blacksmiths in the 13th century who discovered that iron become harder, stronger and more durable when carbon was introduced after being left in coal furnaces.