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
MCQJul 27, 2026Which international agreement aims to limit the global temperature rise to well below 2°C above pre‑industrial levels?Open content
MCQJul 27, 2026'গীতাঞ্জলি' কাব্যগ্রন্থের ইংরেজি অনুবাদ 'Song Offerings'-এর ভূমিকা কে লিখেছিলেন?Open content
MCQJul 27, 2026Which of the following ecosystems stores the highest amount of carbon per unit area?Open content
MCQJul 27, 2026বায়ুতে পার্টিকুলেট ম্যাটার (PM2.5) এর সীমা মান WHO অনুযায়ী কত μg/m³ (২৪‑ঘণ্টা গড়ে)?Open content
MCQJul 27, 2026Which process is primarily responsible for the formation of ozone holes over Antarctica?Open content
MCQJul 27, 2026বাংলাদেশে 'মৌসুমি বায়ু' (monsoon wind) প্রধানত কোন দিক থেকে প্রবাহিত হয়?Open content
MCQJul 27, 2026In the sentence "She has been studying English for three years", the verb form "has been studying" is:Open content
MCQJul 27, 2026Which renewable energy technology uses the temperature difference between two fluid streams to generate electricity without mov...Open content
MCQJul 27, 2026Which of the following novels is a work of the Bengali Renaissance period?Open content