Water (Part-1) | Applied Chemistry | 1st Semester Polytechnic | NatiTute 

Khub valo lagche class gulo

Sir ei Kom somai er modhea erokom video valo kaja asa ... Erokom video future aro pabo asa kora6i .... ❤❤ Dhonyobad sir ...❤

Sir suggestions type questions ans video ektu din. Khub valo video dichhen❤️ Ektu sir video gulo Tara Tari din plz 🙏

স্যার তাড়াতাড়ি দ্বিতীয় ক্লাস টা আপলোড করুন।।

Sir ektu taratari next class gulo din........🙏🙏apner class korte khub valo Lage thank you very much sir ❤🙏

Darun hoyeche sir Ro video chai sir❤❤❤❤

Sir Video gulo ektu taratari deben 🙂

অনেক ভালো হয়েছে... ❤️

Dada darun lagcha

Sir video taratari den.... Syallabus ses taratari korun..... Thank you sir.❤

Thanks sir ❤❤

Thank you sir thank you so much . Sir prattek subject er 1st 2 to kore chapter er questions answer er video age din plz .

Thank you sir

Thank you sir ❤🎉🎉

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sir physics ar chemistry er aro video din semester egiye asche....! but thank you for videos....!

1st view sir

Sir..Communication skills In English er Unit 3 Thake ki6u Question dinn ...

Sir physics er last heat and thermodynamics chapter ta korale khub vlo hto

We need more

Sir taratari 2nd class din

Sir suggetion gulo semester exam er jonno important ?

Sir 2nd class ta upload korun tararai

Next class gulo pathan 20 tarikh theke semester taratari.

Sir next class taratai din

Sir taratari class din

Sir bolchi atomic structure er videor link ta khuje pacchina

Sir solution chapter Kobe deben

Sir next video Water chapter Math please 🙏 within 27th November. Please sir

Physics important questions din please sir

Sir second part ta din

Sir, Amar kichu chemistry er question chilo er ans hole valo hoto sir........ 1. Answer any five question from the given below. (i) What do you know about atomic orbital and distribution of electron in sub-shells . What is allotropy ? Write down the electronics configuration of Ca2 and Al-2 (ii) Explain why-water is liquid but H2S is gas and HF is less acidic tha HCL . (iii What is meant by Π bond and Sigma bond which one is stronger and why ? (iv) How aluminium is extracted from pure alumna . What is self reduction process ? (v) Describe the manufacture of steel by L.D. process . How cast iron can be converted to wrought iron ? (vi) How EDTA is use to determine the total hardness of water . What is permutit and how remove hardness of water by permutit process ? (vii) Explain ion exchange process . What is knocking . Describe the process of manufacture of water gas ? (viii) What is lead free petrol . A coal has the following composition by weight C=85%, O=8%, S=0.7%, N=0.71% and H=4.1% calculet the GCV and NCV . (ix) What are teflon and PVC and their uses . Give one example of each of thermoplastic and thermosetting plastic and their uses ?... Sir A sob er ans pale valo hoto sir.....

Sir water er numerical gulo dio

Sir video aro din

Sir unit 1 er suggestion din ....amder 22 November exam internal..

Sir 1st unit ta ke ses thle?..

Sir water er video anun please.

Sir syllabus ses hbe to?

Sir ayy pdf ta telegram a send korla aktuu valoo hoto

Amader 16november ki korbo vabchi😢😢😢.

Sir video tuku besi dou

Thank you sir

Thank you sir ❤