फॉर्मेल्डिहाइड बनाने की प्रयोगशाला विधि | Formaldehyde banane ki prayogshala vidhi class 12

[@AmitJatav-kv8om]

Thanku sir

[@RohitMishra-rc2tw]

❤❤❤❤

[@abhishekravi9810]

❤❤❤❤❤❤❤😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊❤❤❤❤❤❤❤❤

[@JaydeepChauhan-j4s]

Thinky sir

[@BabuLal-lv3hl]

Aap bhut aachi padate ho sir ❤❤❤

[@thunderssgaming3188]

No1 ❤

[@HarpalSingh-m4y]

Yaor sher🎉🎉🎉

[@bestknowledge159]

Sbse phle maine dekhaa

[@riyamishra2971]

Congrats 😂😅

[@RahulPrasad-kw9ij]

Nice video

[@Brijeshpaswan9235Armylover]

Hello sir Namaste ❤❤❤❤

[@LakiRajpoot-n8y]

Hii 0:00

[@LalitYadav-n3m]

सर लगे रहना हर मत मानना

[@AmanSaini-w8m]

Sir please English ka 2 chapter please 🥺🥺🥹

[@AmanSaini-w8m]

12 class ka

[@anurag47427]

0:0

[@bestknowledge159]

Thik h sir ji hmm bhojpuri me hi bollbb.........hmar 12th me 91% ayl rhll

[@Mrabhishekpandey-e4i]

Sahi me ka ho😊

[@nitinshrivastava268]

Sir ji isme aapne dusri bale m topic ka naam galt likh diya h galti se usme chemical properties ki jagah physical properties likh diya hai

[@bestknowledge159]

Tohse pd krr

[@tarungautam9176]

❤❤❤❤❤