Picric acid : রঞ্জনকার্যে ও বিস্ফোরকে ব্যবহৃত তিক্ত এবং পীতবর্ণ পদার্থবিশেষ;
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Appropriate Prepositions
Apply for(কারো কাছে আবেদন করা): Sumi applied to the Principal for free studentship.
Devoted to (মনোযোগী): He is devoted to music.
Loyal to (অনুগত): Every citizen must be loyal to the state.
Rebel against (বিদ্রোহ করা): The soldiers rebelled against the king.
Stick to (দৃঢ়ভাবে লেগে থাকা): We should always stick to our decisions.
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Idioms
Burning question - (গুরুত্বপূর্ন বিষয়): Poverty problem is a burning question of our country.
Crocodile tears (মায়াকান্না): He shed crocodile tears at our misery.
On the wane (হ্রাসমান): His fame is on the wane now.
Read between the lines (understand the significance, অন্তনিহিত অর্থ বুঝা) Try to read between the lines of the letter.
To go to the dogs (গোল্লায় যাওয়া)- He has gone to the dogs by keeping evil company.