alleryবিবৃতি: সকলো ধাতু বিদ্যুৎ পৰিবাহী। কাঠ বিদ্যুৎ পৰিবাহী নহয়। কি সিদ্ধান্ত পোৱা যায়?
Aকাঠ এবিধ ধাতু
Bকাঠ এবিধ ধাতু নহয়
Cকাঠ আংশিকভাৱে ধাতু
Dধাতুবোৰ অপৰিবাহী
Answer & Solution
Correct answer: B. কাঠ এবিধ ধাতু নহয়
যিহেতু সকলো ধাতুৱে বিদ্যুৎ পৰিবহন কৰে, সেয়ে যিকোনো অপৰিবাহী বস্তু ধাতু হ'ব নোৱাৰে। গতিকে, কাঠ ধাতু নহয়।
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