MCQJul 27, 2026একটি অণুতে হাইড্রোজেন বন্ডের উপস্থিতি বেশি হলে তার গলনাঙ্ক সাধারণত কী হয়?Open content
MCQJul 27, 2026The rate constant (k) of a first‑order reaction doubles when the temperature is increased from 300 K to 310 K. What is the appr...Open content
MCQJul 27, 2026The standard electrode potential for the half‑reaction Cu²⁺ + 2e⁻ → Cu is +0.34 V. What is the cell potential for a galvanic ce...Open content
MCQJul 27, 2026In a first‑order reaction, the half‑life is 10 minutes at a certain temperature. What will be the half‑life at the same tempera...Open content