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প্রকৃতিতে সবচেয়ে শক্ত পদার্থ কোনটি?

পিতল

ইস্পাত

হীরা

গ্র্যানাইট

ANSWER : 3

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<p class = "MsoNormal"><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">পরমাণুর</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">মধ্যে</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">খুব</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">শক্তিশালী</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">বন্ধনের</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">কারণে</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;">,  </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">হীরা</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;">  </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">প্রকৃতিতে</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">সবচেয়ে</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">শক্ত</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">পদার্থ</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;">; </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">এর</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">কঠোরতা</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">আছে</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> 1 </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">থেকে</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> 10 Mohs </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">স্কেল</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">কঠোরতা</span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Mangal', 'serif'; color: black; mso - themecolor: text1;">। </span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">হীরক</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">বা</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">হীরা</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">বা</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">হীরে</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">হল</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">সর্বাপেক্ষা</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">মূল্যবান</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">একটি</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">রত্ন</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">যা</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">গহনা</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">তৈরিতে</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">বহুল</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">ব্যবহৃত</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">হয়</span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Mangal', 'serif'; color: black; mso - themecolor: text1;">। </span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">বর্ণহীন</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">এ</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">রত্নটি</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">একটি</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">মাত্র</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">বিশুদ্ধ</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">উপাদান</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> <a title = "কার্বন" href = "https://bn.wikipedia.org/wiki/%E0%A6%95%E0%A6%BE%E0%A6%B0%E0%A7%8D%E0%A6%AC%E0%A6%A8"><span style = "font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">কার্বন</span></a> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">থেকে</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">সৃষ্ট</span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Mangal', 'serif'; color: black; mso - themecolor: text1;">। </span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">অন্য</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">ভাষায়</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">হীরক</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">কার্বনের</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">একটি</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">বিশেষ</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">রূপ</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">মাত্র</span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Mangal', 'serif'; color: black; mso - themecolor: text1;">। </span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">পৃথিবীতে</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">প্রতি</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">বছর</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">প্রায়</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">২৬০০০</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">কে</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;">.</span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">জি</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;">. </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">খনিজ</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">হীরা</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">উত্তোলিত</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">হয়</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">যার</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">মূল্য</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">প্রায়</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">১০</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">বিলিয়ন</span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Vrinda', 'sans - serif'; color: black; mso - themecolor: text1;">ডলার</span><span style = "font - size: 12.0pt; line - height: 115%; font - family: 'Mangal', 'serif'; color: black; mso - themecolor: text1;">। </span><span style = "font - size: 12.0pt; line - height: 115%; color: black; mso - themecolor: text1;"> </span></p>

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