air me jalane se pahle magnesium ribben ko saph kyo kiya jata hai
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To clean magnesium
क्योंकि मैग्निशियम वायुमण्डल में उपस्तिथ गैसों के साथ अभिक्रिया करकर अपने ऊपर एक परत चढ़ा लेता है ।कोई अभिक्रिया होने के लिए अभिकारकों के संपर्क में आना आवश्यक होता नही तो वे अभिक्रिया नही करेंगे
Because it has layer of magnesium oxide. With this layer a magnesium ribbon should not be clened.
Kyunki magnesium oxygen ke sath abhikriya Karke calcium carbonate ki pert chda leta hai apne Upar usse saaf karne ke liye regmark ka upyog Kiya jata hai
To remove dust