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सम्मुख पन्ना

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विकिमिडिया कमन्स
एक भण्डार जे ११,७७,६२,१२१ खुला रूपसँ उपयोगी मिडिया फाइलसभक संग्रहमे सब कियो योगदान कऽ सकैत छी
आईके चित्र

Interrupted Reading by French artist Jean-Baptiste-Camille Corot. Today is World Book Day.
 

+/− (mai), +/− (en)

आईके मिडिया
Preparation of amorphous silicon (1) and magnesium silicide (2), upon reduction of powdered sand with magnesium powder: 
   (1) SiO2(s) + 2Mg(s) = Si(s) + 2MgO(s); and
   (2) 2Mg(s) + Si(s) = Mg2Si(s).
The reaction described by (1) is initiated by heating; then it is self-sustained and is highly exoenergetic.
 

+/− (mai), +/− (en)

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विकिमिडिया कमन्स गैर-नाफामुखी, बहुभाषिक, नि:शुल्क-सामग्री विकिमिडिया परिवारक एक भाग छी।
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