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বিজ্ঞান ও প্রযুক্তি

১. জোয়ারের কত সময় পর ভাটার সৃষ্টি হয় – ৬ ঘন্টা ১৩ মিনিট পর

২. সমুদ্র পৃষ্ঠের বায়ুর চাপ প্রতি বর্গ সে.মি.এ – ১০ নিউটন

৩. কত বছর পর হ্যালির ধূমকেতু দেখা যায় – ৭৬ বছর

৪. সিডর কোন ভাষার শব্দ – সিংহলি ভাষার শব্দ , যার অর্থ চোখ

৫. বৈদ্যুতিক বিলের হিসাব কিভাবে করা হয় – কিলোওয়াট ঘন্টা

৬. সবচেয়ে মূল্যবান ধাতু – প্লা্টিনাম

৭. ওসমিয়াম হল – সবচেয়ে ঘনধাতু

৮. পানির তলায় মাটি কাটার যন্ত্রের নাম – ড্রেডলার

৯. কাঁচা কলা পাকানো হয় – ইথিলিন ( C2H4 ) দিয়ে

১০. পৃথিবীর ছাদ বলা হয় – পামির মালভূমিকে

১১. পানামার বিমান সংস্থার নাম – কোপা

১২. আয়নার পশ্চাতে পারদ ব্যবহৃত হয়

   
   
May 6, 2017 | 8 years আগে

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