HSC 2024 Chemistry 1st Paper Practical Answer | রসায়ন ১ম পত্র ব্যবহারিক সমাধান

Assalamu alaikum HSC bhai-bonera! Kemon achho sabai? Allah re sob theke bhalo rakho. Ajke ami tomader jonno Chemistry 1st Paper practical HSC 2024 er full answer share korchi. Onek bhai practical book kinte pare na, Google e search kore রসায়ন ব্যবহারিক hsc 2024 সমাধান khuje beray. Tension nish na, ami shob detail e bolchi. Prothom experiment: Sodium carbonate er standard solution bananor. 2.65 gram Na2CO3 niye 250 ml flask e dissolve kore 1 litre flask e volume kore nao. Eta molarity 0.02 M korbe. Titration e HCl er sathe mile dekho, phenolphthalein indicator use koro. Endpoint pink theke colourless. Dosrom: Volumetric analysis. Oxalic acid er solution niye KMnO4 diye titrate koro. Equation: 5H2C2O4 + 2KMnO4 + 3H2SO4 → 10CO2 + 2MnSO4 + K2SO4 + 8H2O. Calculation e normality hisab koro, molarity normality divided by equivalent weight. Salt analysis o important. Qualitative test: Unknown salt e cation-anion detect koro. Jemon, Ag+ er jonno dil. HCl dite white ppt, NH3 e dissolve. Fe3+ er jonno K4Fe(CN)6 dite prussian blue ppt. Viva question gulo ready koro: Practical syllabus kii? Safety rules ki? Burette reading kivabe nao? Error source ki ki? Standard solution ki? Ami likhechi common 20 ta question er answer. 1. রসায়ন ব্যবহারিক পরীক্ষায় কোন instrument use হয়? Ans: Burette, pipette, conical flask. 2. Why do we rinse apparatus with solution? Ans: To avoid contamination. Banglish e bolle, practical exam e viva te confident thako, teacher ra easy question kore. HSC 2024 er syllabus e volumetric 40 marks, qualitative 20, viva 40. Practice koro ghor e, friend er sathe group study. PDF chai tahole similar guide print kore nao. Result valo ashbe inshaAllah. Kono doubt thakle comment e bolo, ami reply dibo. Best of luck sobai! Allah success dite. Jai Bangla!