are, aniline re diazonium banaiki chloro benzene banibu para? bhai, temperature control re gadbad heijiba! mote lagila 0–5°C re rakhiba katha, kintu mor auto battery jema thanda re kamre bandha heijai, semiti ice bath pani steady rahinila. net result: foamy, useless jhia. jadi kama kariba, thanda re rakha — kintu mor experience re seita possible nahin!
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