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ইউরিয়া সারের কাঁচামাল কী ?

Ferdows blog

প্রশ্নঃ ইউরিয়া সারের কাঁচামাল কী ?

ক. ইলমেনাইট

খ. প্রাকৃতিক গ্যাস

গ. মিথেন গ্যাস

ঘ. চুনাপাথর

উত্তরঃ (গ) মিথেন গ্যাস ।

ব্যাখ্যাঃ ইউরিয়া সারের কাঁচামাল হচ্ছে " মিথেন গ্যাস " ।

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