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বুনসেন বার্নার, ত্রিপদ স্ট্যান্ড, তারজালি পরীক্ষাগারে কোন জিনিসকে উত্তপ্ত করার কাজে লাগে।
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বুনসেন বার্নার, ত্রিপদ স্ট্যান্ড, তারজালি পরীক্ষাগারে কোন জিনিসকে উত্তপ্ত করার কাজে লাগে।