Occurrence of Metals (Enrichment, Extraction and Purification) || in Hindi for Class 10

In this Chemistry video in Hindi for Class 10 we explained how metals are extracted from their ore. At first ore is enriched or concentrated. Then concentrated ore is extracted to its elemental form. The impure metal is then purified.
Enrichment of Ore / Concentration of ore :
Ores mined from the earth are usually contaminated with large amounts of impurities such as soil, sand, etc., called gangue.
Different processes are used for removing the gangue from the ore depending upon the differences between the physical or chemical properties of the gangue and the ore.
Extraction :
Different chemical and physical processes are employed to convert the ore into metal. Those processes are electrolysis, calcination, roasting, reduction etc.
Refining of metals :
The metals produced by various processes contain impurities, which must be removed to obtain pure metals.
Extracting Metals towards the Top of the Activity Series :
The metals high up in the reactivity series are very reactive.
These metals are obtained by electrolytic reduction.
For example, sodium, magnesium and calcium are obtained by the electrolysis of their molten chlorides.
Extracting Metals in the Middle of the Activity Series :
The metals in the middle of the activity series such as iron, zinc, lead are moderately reactive.
These are usually present as sulphides or carbonates in nature.
It is easier to obtain a metal from its oxide, as compared to its sulphides and carbonates.
Therefore, prior to reduction, the metal sulphides and carbonates must be converted into metal oxides in the process of roasting or calcination.
Roasting : It is a process of heating a sulfide ore to a high temperature in the presence of air.
Calcination : It is a process in which ore is heated in the absence or limited amount of air.
Extracting Metals in the Middle of the Activity Series :
The metal oxides are then reduced to the corresponding metals by using suitable reducing agents such as carbon.
Sometimes displacement reactions with highly reactive metals such as sodium, calcium, aluminium, etc., can also be used for reduction.
Extracting Metals Low in the Activity Series :
Metals low in the activity series are very unreactive.
The oxides of these metals can be reduced to metals by heating alone.
Refining of Metals :
The metals produced by various reduction processes described above contain impurities, which must be removed to obtain pure metals.
The most widely used method for refining impure metals is electrolytic refining.
Many metals, such as copper, zinc, tin, nickel, silver, gold, etc., are refined electrolytically.
In this process, the impure metal is made the anode and a thin strip of pure metal is made the cathode.
0:00 Introduction
0:54 Enrichment, Extraction and Refining
5:30 Extracting Metals towards the Top of the Activity Series
7:13 Extracting Metals in the Middle of the Activity Series
10:43 Extracting Metals Low in the Activity Series :
12:15 Refining of Metals
👇👇👇👇👇👇 𝑷𝑳𝑨𝒀𝑳𝑰𝑺𝑻 👇👇👇👇👇👇
🔴 Click here to watch the whole playlist on Chapter 3 : 'Metals and Non-Metals' for Class 10 :
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👇👇👇👇👇👇 𝑷𝒓𝒆𝒗𝒊𝒐𝒖𝒔 𝑽𝒊𝒅𝒆𝒐𝒔 👇👇👇👇👇👇
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🔴 How do Metals and Non-Metals React (IONIC COMPOUND)
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[@sanjiv6602]

BEST teacher of PCM

[@Mrkunal-xx6xd]

Such a fantastic and useful video for us. Thanks a lot sir

[@ranjeetdilshan6888]

👌 wow I never understood this chapter in my student life. Thanks to sir to start these lectures. I would urge sir to start coming on youtube on regular basis.

[@AkshatKumar-tj7yv]

Sir i have a doubt in refining because you said that copper becomes cu+2 by giving electron because of current but in curcuit with electric current any of parts have zero net charge because electrons from behind fill tha space

[@Ashishkumar-pn9cq]

Thank you very much sir, it is really very helpful

[@manojkumarthakur1404]

Amazing video sir. 🙏🏻

[@lakshya__gupta]

Sir, As you have to make more videos for different classes on different channels so When you complete this chapter than if you haven't decided any other chapter then plzz prepare surface area and volume for class 9 from Ra agarwall no need to solve questions only derive formulas and what you wanted Sir if have not any burden then prepare this otherwise no problem

[@jaisaran2514]

Easy explanation sir thanks

[@r.p.funclub9958]

Thanks sir.

[@nikhilarya721]

Sir big fan

[@teamrusher4080]

Thanks sir

[@ManojGupta-cm7jd]

Sir iron ka fussion kyu nahi hota hai ??

[@edupoint.secondary]

Visit EduPoint. Ch: Nuclei

[@farmanbeg9199]

Sir edupoint channel par vapas aa jaiye hum aapki rah dekh rahe hai hamko rah dikhaiye

[@abdullahselfi4812]

Nice

[@harshahlawat007]

Sir please upload electricity chapter video please 🥺🙏

[@nikhilarya721]

🥰🥰🥰

[@Sigmaboy3301]

Resistivity And Resistance Potential And Potential Difference Concept Samjha do

[@user-nw6ro1xl7n]

Mujhe samajh nhi aata sir itni achhi quality content dene ke baad bhi itni kam views aate hai Dil se bura lagta hai. 😞😞😞

[@diwakarkumar1089]

Sir kuch metal radioactive hote hai aur radioactive nhi hote.Why? Please explain it sir

[@edupoint.secondary]

Visit EduPoint. Chapter : Nuclei

[@mastbeat4293]

Sir aapne kabhi bhi like or subscribe ke liye nhi kha,ye aapki sabse bdi khubi hai

[@scoldedboy43491]

Nice