The colour of Pb3O4--
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The colour of Pb3O4--
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Login with Sothik IDকাপড় কাঁচা সোডার রাসায়নিক সংকেত কি?
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Login with Sothik IDযে ধাতু বিশ্লেষণ করা সম্ভব নয়, তাকে কোন ধাতু বলে ?
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Login with Sothik IDবৈদ্যুতিক ইস্ত্রি এবং হিটারে ব্যবহৃত হয়-
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Login with Sothik IDBronze is the alloy of
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Login with Sothik IDগ্যালভানাইজিং হলো লোহার উপর-/Galvanizing-এ কোন ধাতুর প্রলেপ দেওয়া হয়?
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