Master Metals and Non-metals in One Shot | Chemistry - Class 8th | Umang | Physics Wallah

[@ShrivastavaAryan-0018]

Hello juniors 🙂 Class 8 ko Acche se padhna best se kyu kii 50-75% Topic class 10 mai cover hoga Specially :light chapters.... 🙂 NOTE: Maine toh Bhut mazje kiye the 8 mai 10 mai 2X mehnt krna per raha hai

[@shreyanshisanodiya5684]

😊

[@harshadwaghmare7448]

Thanks Broo 🤗🤗

[@Lord_EDITZ632]

Tnx

[@manjeetyadav3050]

Thanks bro may God fulfill your dreams

[@arungill687]

Thx bro❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤😂😂🎉😢😢😢😢😢😢🎉🎉🎉🎉

[@Gamerplayzankit]

🔴Aluminum is cheaper than copper and also it is light weight so they can use in outdoor. *We use copper in the house wiring because copper conduct electricity better than aluminium. Due to which power is saved so that money is also saved.* *copper has less resistance than aluminium* 🔴 *Silver is too costly so it cannot be used as wire.*

[@HemantKumar-hm3cf]

❤❤❤

[@rishabhohri9909]

Teue

[@rosterboy6886]

Right

[@galaxyrider8823]

I think aluminium jaldi tot jata hai agar usko wire me bnaya jaye

[@L._.7__YOUTUBE]

Silver is good conducter of electricity it is expensive and electricity go faster so it can burn wires

[@vishwatsenareddyposham8263]

Sunil sir literally stood and thought us continuously for 1 hour and 24 minutes, respect to sir

[@nethervarient7243]

he did take rest because pf cuts and edits in between but still it is a very good achievement also not being nosy but it is taught

[@aneeksshorts2092]

No 1 hour 24 minutes and 1 second

[@Beastbreather124]

@@aneeksshorts2092 say say [ chut*ye]

[@abhinavvermaartist8468]

@@aneeksshorts2092 🤣

[@samarthfree1835]

Alhak sir use to stand for 1 hour without fan and explain on white board

[@PratikrajVerma.]

7:32 it is because copper have low melting point

[@hemantmajhi9158]

Q.1 07:13 Ans. Copper is the preferred wiring for our home over aluminum because of its ease of use and ability to effectively conduct electricity. Remember that aluminium conducts less well when we compare it with copper but copper is comparatively heavier The density of aluminium is only one third of the density of copper so the light weight of aluminium is the main reason for using aluminium instead of copper in overhead connections.

[@anjusingh3338]

Bahi itna google me se dekh ke mat likha kar.

[@manishakarn2024]

​@@anjusingh3338 True

[@aksharma2602]

😂😂

[@Elec5ronic_Îdiot]

Copy paste 😂😂

[@nevensofpw8431]

I saw first time such a teacher who teach with questions 👍👍👍👍

[@shayankhan9843]

how

[@dhruvesharma8466]

PW ALL TEACHER ARE BEST

[@seenadevi8597]

No

[@vipulkumarrathi5818]

Sir 9 ka batch kab sa suru hoa ga

[@Shivraj-b4v]

tu kya itne din se rha tha

[@virendra6701]

i can say physics wala is better thab byju's and toppr ....🤩

[@mimansasharma-]

Yes

[@BehindTheFact]

There are two main reasons why overhead power cables are made of aluminium while copper is used in our homes: 1. Weight: Aluminium is significantly lighter than copper. This is crucial for overhead power lines because the weight of the cables puts a strain on the towers and support structures. Using lighter aluminium cables reduces this stress and allows for longer spans between towers, making construction and maintenance more cost-effective. 2. Cost: Aluminium is much cheaper than copper. While copper offers better conductivity for the same size wire, the cost advantage of aluminium outweighs this benefit in long-distance power transmission. Additionally, the larger diameter needed for aluminium to achieve the same conductivity as copper still results in a lighter overall weight. 7:19 7:27

[@tanmayscout5696]

1:04:47 sir barium is missing!!

[@nikhildangi5824]

17:25 ANS silver is better conductor of electricity but being expensive, is not used in making cable

[@EagleAirInd]

But also due to its Ductility.

[@DineshChauhan-dj3fo]

Why dont use in made cabale

[@Iamsnowedyt]

​@@DineshChauhan-dj3foit not use a cable uh cuz it a very expensive ah it's not used in making cable wires as it is very expensive

[@Comicperson__07]

It's not better it's best babe

[@deeksha2611]

We don't use silver wires at home beacuse it is very expensive metal but a really good conductors and the second reason is due to its reactivity

[@piyushpunjal3438]

And the not for theif😂😂

[@piyushpunjal3438]

Hi

[@piyushpunjal3438]

@Harshul who are you

[@booskies]

​@@piyushpunjal3438 stranger duh 😂

[@diptydoley2028]

Hi diksha your answer is correct I think

[@arcneedz]

17:14 Silver is indeed the best conductor of electricity, but there are several practical reasons why copper is more commonly used for electrical wiring: 1. **Cost**: Silver is significantly more expensive than copper. The cost difference makes copper a much more economical choice for most applications, especially when large quantities of wire are needed. 2. **Availability**: Copper is more abundant than silver, making it more readily available and easier to source in the quantities required for electrical wiring. 3. **Mechanical Properties**: Copper has excellent mechanical properties for wire manufacturing. It is ductile and can be easily drawn into thin wires without breaking. While silver also has good mechanical properties, the cost and availability factors make copper more practical. 4. **Corrosion Resistance**: While silver does tarnish when exposed to air (forming a layer of silver sulfide), copper also forms a protective oxide layer when exposed to air. This oxide layer prevents further corrosion, making copper wires durable in most environments. 5. **Applications**: Silver is often used in specialized applications where its superior conductivity is critical, such as in certain electronic components, high-end audio cables, and connectors. However, for general electrical wiring in buildings, appliances, and other common applications, copper provides a good balance of conductivity, cost, and practicality. Overall, while silver's superior conductivity is advantageous, the practical considerations of cost, availability, and suitable properties make copper the preferred choice for most electrical wiring needs. 17:15

[@farhatzia1592]

Brother sir was asking about aluminium not silver and I know that u hv used chatgpt to generate the answer

[@farhatzia1592]

Brother sir was asking about aluminium not silver and I know that you have used chatgpt to generate the answer

[@arcneedz]

@@farhatzia1592 ooh! my mistake

[@antimasingh3515]

Sir concept crystal clear😊

[@knownkiller7061]

yes bro

[@shanvisingh320]

17:15 We don't use silver as the wires because it is highly expensive then other metals like copper and almunium Nice explanation sir thankyou so much 😀

[@Renu132]

No silver's wire are cheap

[@edituaskedfor]

@@Renu132 how can silver be cheaper than copper? It cant be the jwellery are also expensive when it comes to silver

[@tsgojas3181]

Metals are generally good conductors of electricity. The conductivity of a metal is the ability to allow electricity to pass through it. Since aluminium is a metal with low resistance and good conductivity it is used in electrical wires.

[@ramachandrabollur2915]

Then the copper is allso the good conductivity why it is not use

[@tsgojas3181]

beacuse there are not many electrons moving in it @@ramachandrabollur2915

[@nitinmaharana3706]

@@ramachandrabollur2915 because copper is harder than aluminum (aluminum is a soft metal ) and it expands a lot when over heated and it will be heated as it is a great conductor of heat and electricity .I think this may be the reason

[@OnkarKharade-k7y]

Noo

[@OnkarKharade-k7y]

The answer is aluminium conducts electricity with very high power.and if it will be used in home,the electrical appliances may blast or catch fire due to high power. And according to me this is the reason.😅😅

[@Ayushi77777]

17:35 because silver is more expensive and more sensitive to oxidation

[@DivyaSingh-lx3ze]

Silver is not used for making electrical wires over copper because it is a very expensive metal. 7:10 Who is watching in july. Thanks for 5 likes.

[@pushpendrajain7928]

PW is not a company It is a Emotion 🔥🔥

[@studyrestudy]

Bro a nahi an hoga

[@be.mewcury]

​@@studyrestudy engrez ke aulad sorry don't take seriously.

[@ParasnathVerma-y4i]

Because aluminium is expensive than copper (7:35)

[@ashuger9702]

Thk ❤❤❤❤brother

[@Shakeel_ahmed1]

Aluminium is less costly than copper that is why aluminium wires are used as overhead power cables.....I think so

[@Ritikkumar_09]

True ​@@Shakeel_ahmed1 It is less costly compared to copper and it is more ductile than copper also.

[@Ayushi77777]

7:19 alluminium wires are not used at home because they catch fire easily

[@38shivanshzalavadia6f6]

heating effect of electric current is seen more in copper than aluminum so copper is used in case of low voltages also because it has low melting point.

[@38shivanshzalavadia6f6]

[@wiweisi]

Bahut bhadiya babua kon sa class ma padtha ho babua 😂

[@wiweisi]

A+b ka hole sq kya hoga babua

[@jyotirmayeesahoo7981]

Km​@@38shivanshzalavadia6f6

[@shambhavibhardwaj-fj8fz]

U😅6y😅yy​@@wiweisi

[@chitralekhasingh3425]

Sir u are the one of the best educator of PW

[@ArbasanYgy]

Then what about ritik sir?

[@PoojaSingh-rm1tk]

Ritik sir is best ❤❤❤

[@Nic.com.Priyanshi]

16:42 According to my knowledge so far amd NCERT CLASS 10 Science- Chapter-Metals and Non-Metals , Gold is the most ductile Metal

[@kanaksingh6884]

Yes you are right ...gold is a most ductile metal because with 1g of gold we can make 2km long wire ....but don't know what's wrong with that

[@shivprasaddayma4460]

Potassium - karina Sodium - ne Calcium - car Magnesium - mangvaye Aluminium - alto Zinc - zenolt Iron - ferari (Tin) Lead -phir (Hydrogen ) Copper - kyu Mercury - ho gayi Silver - angry Gold - aunty This is my technique for learning reactive series of metals

[@Rexelite_YT]

That "Sundar Kanya" Example was sooo good sir pura samajh aagya 😂💗🙏

[@Mrstunt108]

Tere baaton se lag rha hai tu nalla hai

[@TOXIC_HAPPY.]

Madarjaat ghosi sika

[@God_site]

😂😂😂😂😂 bro real pura Nalla lol

[@DaCritic.]

Girl..😂

[@artikushwaha5077]

@@DaCritic. 😂😂🤣🤣

[@vickyyadav7000]

7:27 Sir Aluminium is lightweight and cheaper than copper. we can also use aluminum in the house but in outer cables, we can use copper but copper will be heavier and expensive than aluminum

[@Razer-Fh5]

Yes

[@prodevgaming1278]

Melting of copper is low as it gets melt in low temperature thats why we do not use copper . Its a scientific explanation , aluminium is cheaper than copper its just a average level answer , by the way i am a neet aspirant and in 12th class so you can trust on me

[@Pari_shrirao]

Sir , aluminium has a significantly higher specific electrical resistivity than copper.This difference is highly relevant for power cables.Aluminium conductor requires 56% larger cross-sectional area than copper for same current carrying capability.

[@eagleeyeyt5690]

Hi, where are you from😊

[@S.P.Yadav-o9s]

You are right ❤❤❤😊😊😊😊😊😊😊😊😊🎉🎉🎉🎉🎉🎉🎉🎉🎉

[@S.P.Yadav-o9s]

Some students like that❤❤❤❤😊😊😊😊😊🎉🎉🎉🎉🎉🎉🎉😂😂😂😂😂😂😂❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤

[@S.P.Yadav-o9s]

Apka photo mai mistake hai

[@Eeshamchaturvedi..]

17:24 Because silver is costly than copper and aluminium

[@Fundaazgamer]

1:01:54 Sir apne kya bola tha girl... 😂😂😂

[@nevshere4289]

after watching the entire video i just now realised that is it for 8th grade.. but I am in 10th grade 🤦🤦🤦🤦🤦

[@rehanayasmeenyasmeen9654]

Really you watched the entire video thinking that the video is for 10th

[@bhavanisingh8991]

Ohh so sad I am in 7th grade and I am taking 8th grade syllabus.

[@modhumitapal6545]

Wtf

[@DECODE_WITH_BHARAT]

@@bhavanisingh8991 me in class 6 and now i had completed 8th syllabus ☺☺

[@Asher_710]

​@@DECODE_WITH_BHARAT nice i am also in class 8th complete 9th syllabus just revising

[@Cut_And_CreAte.30]

22:31 Answer is D) i and iv

[@MadhuKumari-rb7kc]

silver is the best conductor of eletricity but is less used in cable wire because it is so costly ..that's why we use mostly copper for eletricity

[@ananayaop9994]

Sir Jo alluminium hai uska weight Jo hai wo Kam hota hai jaise 1kg of copper jitna amount ka hoga utna ammount ka Alluminium hoga 0.33 kg agr hm Alluminium ke amount ko double bhi karde to bhi Alluminium ka amount hoga 0.66 joki 1\2 ammount of 1kg of copper ka hai ''sir it is the actual reason why Alluminium are not used in our home😇'' THANKS 👍

[@nishthachakrawarti1465]

I have one more trick of reactivity series potassium - please sodium - stop calcium - calling magnesium - me aluminum - a carbon - cute zinc - zombie iron - instead tin - try lead - learning hydrogen - how copper - copper silver saves gold - gold platinum - platinum helium - helium like me if you are agreee 👇

[@Shrenkstav]

🤣nice

[@manmohankumar9892]

Nice

[@subhajeetpramanik406]

25:27(ans-question-2) {phosphorus - solid room temperature , lustrous }

[@aastikeymishra4712]

17:17 we don't use silver as wire because:- 1. It's expensive 2. copper is an excellent conductor and is much more abundant and affordable than silver. It strikes a balance between performance and practicality.

[@amitkumarhsc]

Why every good teacher can only be found online, why can't our school teachers teach like this.😐

[@mathskighanti]

I have a MATHS KZbin channel named as "Maths Ki Ghanti". Your way of explanation is the best one. Thanks to share knowledgeable content 😊.

[@adityaaaa79]

1:01:55 sir girlfriend bol rhe the🤣🤣

[@alokalok2041]

😅

[@Jaskulive1]

Yas

[@Srbv123]

😮 ​@@Jaskulive1

[@pranabanandabehera]

Though silver is a good conductor of heat but it is not used in making electric wire as it is very expensive . silver is a noble metal and it is used in making jewelry it is also used in electroplating and in making high Value coins that is why silver is not used in making electric wires. 17:14

[@leenadewangan13]

Happy teacher's day sir ❤

[@tanusreelayek966]

You way of teaching is awesome. Thank You Sunil Sir.

[@Spark__169]

The Only teacher who want his students to really be successful ❤️❤️❤️

[@prathampandey8653]

Puri physics wallah Sab ke Sab

[@ssgamers6967]

SAB TEACHER CHAHATE HAI KI UNKE STUDENT SUCCESFUL HO

[@Spark__169]

@@ssgamers6967 Jo mujhe school me padhate hai vo Nahi chahte

[@yateenff4182]

Jada nhi ho gya , badi badi bate mat karo

[@Spark__169]

@@yateenff4182 Abe tujhe kya

[@learnwithani993]

17:23 We can't use silver wire because it expensive while the copper wire is cheapee than silver wire Also copper wire is used in house as it is affordable n conduct better electricity than aluminum..

[@shashwat7078]

17:32 the answer is that silver is very expensive though it was not used to make the wires of it

[@sarfrazahmed3981]

Copper is the preferred wiring for your home over aluminum because of its ease of use and ability to effectively conduct electricity. It is more stable, durable, and performs better than aluminum wires. Copper is known to have better Conductivity than Aluminium.

[@divyanshgarg5434]

17:22 Silver Wires are not used for making wires as silver is a very rare, hence costly metal. Also, silver is on the heavier side of metals.

[@KajalYadav-yx5jt]

You are great teacher sir😊😊👍👍

[@aradhyrai6819]

Silver can't be used as wires or cables because they are very costly as compared to copper and aluminium wires..

[@aradhyrai6819]

Cr7 siuuuuuuuuuuu any Ronaldo fan

[@jharnasarkar4593]

Q Why alluminium wires used instead of copper wires overhead? Ans- Because it reacts with atmosphere and tarnishing happens and forms the layer known as patina. Secondly alluminium is economically cheaper than copper

[@smartstudywithaj6259]

Correct🥇🥇🥇

[@JaikeshPandey]

Sunil 'OP' Sir 🔥🔥

[@asthatiwariblog4724]

Answer is silver is better conductor of electricity but being expensive is not used in making capable

[@sangitatak2024]

Sir what a entry 😇😇 Aapka introduction style is awesome 👌🏻👌🏻 Sir entry op 🙃🙃 Starting me hi maja aa gaya 😎😎

[@atharvaanand9754]

Copper is a preferred wiring for the our home over aluminium because it is of use and ability to effectively conduct electricity it is more stable durable performs better than aluminium wires . Cooper wire has low level of resensitivity and also good conductor of electricity. Aluminium has 61% of copper conductivity . The cross section area of an element in conductor should be 56% largest then copper to carry the same cutting the need of to increase the thickness of aluminium wire restrics it used in many appliance such as small motors and automobiles. It is also cheaper than copper.

[@pradeepkumavat1810]

23:37 is very funny😅 Your Teaching Sliks are much better than our school Teacher Thank you For giving Quality Seasion

[@arjundedha6879]

RIP English

[@pradeepkumavat1810]

@@arjundedha6879 Thanks jara hame bhi apke English classes padha do ham bhi English Sikh jayege

[@journeywithlearningbyprith7155]

7:28 copper (Cu) has low melting point

[@saranshyadav007]

Aye ❣️Now me in 9th 😌 But attending this whole lecture for revision by Sunil sir 💞

[@aartidubey7637]

I am in 7th and studying for 11th

[@alizahkhan1011]

@Akshat Singh aap kyun padh rahai ho 10th k liye ...i mean aap toh abhi 8th mein ho na...10th ko abhi bhout time hai....

[@asaramkhandare8242]

same hame kaha last year ese one shot mile thein ???

[@anamfaria241]

Currently in 9th about to go in 10 watching it for buliding concepts😃......such a g8 channel was not available in our times.......✌️

[@shreya4988]

@@alizahkhan1011 he's lying

[@pcgaming212]

Tensile strength of copper is twice that of aluminum, which makes it ideal for electrical conductivity at home. On the other side, it is not a good choice for high voltage lines. This is because high voltage line transmissions involve lots of bending of the cable when doing installation.

[@3bgamer-ln7lz]

❤

[@priyamvada_sh]

Bro i have an exam tomorrow and I’m watching this now😭 But i will still manage to get good marks because of physics wallah 🙂🙂

[@ManojChoudharyManoj-h1v]

From which school 🏫

[@minivlog7172]

Hiii

[@minivlog7172]

I love you

[@ananyarathore3535]

bro exam kaisa gaya?

[@jakedadug6830]

same here bhai

[@PratimaKymari-k3j]

7.25 . Because copper conduct electricity better than aluminium.Due to which copper saves money and power. Also, heating effects is seen more in copper than aluminium so copper is used in case of low voltages also because it has low melting point.😊😊

[@asha3459]

Sir silver is not used in Electric wire because it is expensive . But instead of these we use copper as electric wires because it is cheaper and it is a good conductor of electricity.

[@guriyarani2373]

No your ans is totally wrong

[@asha3459]

@@guriyarani2373 Ok can you tell me the correct answer if my answer is wrong.

[@manv123ChauhanRajput]

Jai physics wallah ❣️❣️❣️ Jai Hind Jai Bharat 🇮🇳🇮🇳🇮🇳

[@jungkook1646.]

Though silver is a very good conductor of electricity but still that is not used in electric wiring primarily due to its cost. It's very expensive compared to the widely used wiring material copper. Another reason for not using silver is that , it oxidizes easily and tarnishes when it comes in contact with air.

[@Susha-Squad4891]

maybe it is soo much rare

[@shashikanttrivedi6719]

17:20 . Silver is not used in wire because it is too expensive the most expensive metal is gold and then SILVER. That's the reason it is not used in wires( according to me)😅

[@Movie_mashupss]

Alluminium wire is used in high power supply rather than copper for some reason like it is less costly than copper and in 1 kg aluminium a very long wire can be made but in 1 kg of copper the wire can be made is shorter than the alluminium wire.

[@Punjaban2828]

Watching this at 3am really helped me!! Now let's hope for the best in the exam ❤

[@ProVoltsy]

All the best bro😅

[@Punjaban2828]

@@ProVoltsy Thankyou Bro!! My paper went really well ❤️‍🩹

[@AshishVarsha477]

He gives very amazing example 😊😊

[@Fun_Fact_Yt_21]

Sir aap na Q8 1:14:46 ma part D btaya lakin yaha pr C part ha ❤❤

[@drstonecold9355]

Aluminum is a common material used in the construction of electrical wires. Unfortunately, aluminum wiring is not as strong as copper wiring, and it has a higher thermal expansion coefficient.

[@ayushpithoriya7652]

Aluminum is preferred in overhead power cables because it is a good conductor, so it can transport current with minimal losses while also being lightweight enough to not need the large support structure

[@mysteriesofeverything43]

Oooo

[@adyashapanigrahi5158]

We don't use silver wires in place of aluminium or copper wires because silver is a very good condector of electricity and if the electricity flow very faster then there will be held a spark.

[@sayinglearning54]

also , silver is not cheap

[@marinate9569]

​@@sayinglearning54 also , stealing bhi jyada hogi

[@sandeepmathur1498]

19:08

[@deepaksuryan9018]

​@@sandeepmathur14988:02

[@GhulamHassan-kf4bu]

​@@sayinglearning54the answer simply that silver is expensive

[@tanmayscout5696]

17:20 sir ji agar silver use hone lagega wires mein to gahnon ki chori ke bajay Taron ki chori hongi 😅😅

[@dilipkumarrai7227]

Copper is a good conductor of heat but we use aluminium at transmission lines The main reason is cost

[@archikumari1385]

17:21 due to it's expense, silver is not used as wrining.... compared to copper.

[@nameless9201]

Same ma v whe socha tha

[@Aditya-s5s9w]

Very impressive lecture by sunil sir experiment and chemistry I am from neev 2.0 but study 8th class basic chapters

[@venkateshwarn]

High Respect

[@gayatrikhandare8857]

Hum aluminum ki wire bahar apne electricity dp or other kuch wide area connection ke liye use karte hai kyuki aluminum wire has high ignition temperature

[@Altamash_farid]

Excellent teaching sir Ji 🎉❤❤

[@Jeonhuriya]

Thank you so much sir ur way of teaching is great 😊👍

[@arunpratapsingh859]

Hello juniors I hope you done ✅ The complete chapter in the way of concepts and it will help you in class 10..

[@manmohandhoundiyal8053]

🤣🤣

[@EDUCATION.MUSAFIR]

Ok senior

[@DigambarDigambarpanda]

Exactly I am from class 10th And i am very worried about this 😢😢😢

[@Kandavlogger]

17:25 Ans Silver is the best conductor of electricity but it is too expensive so it is not used to make cable.

[@UTKARSHADARSH]

17:25 because silver oxygen se react karta hai

[@oneinall8299]

I think we use copper and aluminium wire instead of silver wire(which is best conductor of electricity) because silver wire is more expensive .

[@risingplatinummc6180]

These classes are the secret of toppers ...,😏

[@shivprasad-ki9jb]

Yah like me I am also topper in my school

[@xwertiz_]

1:14:58 the correct answer was option c

[@sandhumitlesh_0412]

💯💯 qualified teacher.....and we luck that we are study from chemistry king🥀🥀💯💯🤟🤟

[@poojashah9489]

Really very satisfied with your way of teaching, detailed concepts out of NCERT....very very helpfull for those who wants to learn extra ordinarilly

[@msdhoni.sr0748]

15:25

[@gourimukherjee5556]

You are right

[@SUBHASHKUMAR-uq3zw]

really

[@mantidas2940]

epic line : Yeh apko Pata hone chahiye😂 vai the style of saying 😂 But literally very good explanation ❤

[@avnishtripathi369]

Right answer of question no.3 is (B) 36:11

[@Deliciously-r3p]

Sir your my best teacher... from the next month i have exams and now i don't have any doubts in chemistry 🧪 i am very 😊 happy 😊

[@aluakaba4924]

I have a test in a hour

[@AdhyyanSethi12008]

I have test next day

[@gooopuggyyy6065]

Are u in dav school

[@stumblegamer4462]

@@aluakaba4924 I have a test in( an) hour hoga bro 🤓

[@aluakaba4924]

@@stumblegamer4462 🤓🤓🤓🤓🤓🤓🤓🤓🤓🤓

[@Taniyachy..]

Sir ...why is tin not present in the reactivity series of metals ?...and also some websites mention carbon in the reactivity series ......and sir how to remember this chemical reactions...for exams ?

[@rosesajad9955]

17:20 We don't use silver for wiring because it may not be economical to use silver for electric purposes. Also it oxides' easily when it comes in contact with air and it tarnishes.

[@Shivangi_study_channel]

Because silver is very costly but copper and aluminium has low cost which is easy to purchase

[@paribeautyparlour4839]

I understand whole chapter thank you so much sunil sir☺️☺️

[@niharikajha2081]

We cannot use copper wires at overhead powers because they are more expensive than aluminium whereas aluminium wires are not used at home because copper wires have good conductivity of electricity than aluminium. Hence, aluminium are good to use outdoors instead at home and copper wires are good for wiring at home Thanku sir for your best explanation🤗🤗

[@educationbeyondeducation2729]

you are not totally right🙂🤒

[@rupalikhandelwal6266]

Yes

[@J1A123]

Nope

[@rakeshkumawat9765]

Best teacher of chemistry Thanku so much PW for these classes😀😀

[@acchi_bachi]

Hmmm right

[@Pratyushtiwari1555]

25:24 number (B) Phosphorus solid at room temperature

[@Pratyushtiwari1555]

Option it is

[@anjana3113]

we dont use silver as the wires because it is very expensive compared to other metals like aluminum and copper...^^ very nice explanation thank u so much^^

[@adonisahead]

Silver are cheap too use in metal compare to gold for reflection

[@3stars368]

Also that they are soft and have to be alloyed with copper for a longer time durability

[@theswastikgupta2180]

Stability: Aluminum wire is very easy to fabricate, thus making the resistance large, reducing the weight of the wire, and posing a safety risk. But copper is the stability of the core

[@interestechy]

😢😢

[@satishpandhare6933]

Aluminium wire will be much thicker but it will be lighter compared to copper since the density of aluminium is only one third of that of copper. The conductivity to weight ratio of aluminium is better than that of copper that is why we prefer aluminium in overhead power connections.

[@smoop_69]

17:19 we dont use silver wires even though it is the best conductor of electricity because it is an expensive metal so instead of using silver we use copper to make electric wires