ল্যাবরেটরির নিরাপদ ব্যবহার-২

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\(5gO_{3}\) তৈরিতে নিম্নলিখিত কত গ্রাম \(KClO_{3}\) প্রয়োজন? (\(K=39.1, \ Cl=35.5\))
মেডিঃ ও ডেন্টালঃ ২০১২-২০১৩।

\(12.22\)
\(22.37\)
\(12.77\)
\(10.57\)
উপরের কোনটি নয়

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Ans: \(12.77\)
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