একটি বস্তুর বাতাসে ওজন = 3kg, পানিতে ওজন = 2.5 kg হলে specific gravity কত?
MCQ Practice ID: 87414
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একটি বস্তুর বাতাসে ওজন = 3kg, পানিতে ওজন = 2.5 kg হলে specific gravity কত?
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