Bio chemical : প্রাণরসায়নিক;
Related Words
bio chemical  biochemical  See Words Also In
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Appropriate Prepositions
Apply for(কারো কাছে আবেদন করা): Sumi applied to the Principal for free studentship.
Entrust to (কাউকে কোনো কিছু বিশ্বাস করে দেওয়া): He entrusted the thing to me.
Indifferent to (উদাসীন): Everybody is indifferent to my problem.
Qualified for (যোগ্য প্রতিপন্ন হওয়া): No candidate was properly qualified for the post.
Sentence to, for (দন্ডাদেশ দেওয়া): He was sentenced to death for murder.
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Idioms
Base born (নীচ বংশজাত, খারাপ জাত—adj.) He is a base born person; I cannot go along well with him.
In black and white – (লিখিতভাবে) – Put forward your proposal in black and white.
Rank and file (সাধারণ লোক): We should pay attention to the rank and file of the country.
Through thick and thin (through all difficulties, সমস্ত সমস্যার মধ্যে)-Ruma followed her husband through thick and thin.
Upper hand (প্রাধান্য) - He got the upper hand in the selection.