HYDROGEN - NCERT
Presently ~77% of the industrial dihydrogen is produced from petro-chemicals, 18% from coal, 4% from electrolysis of aqueous solutions and 1% from other sources. 9.4 PROPERTIES OF DIHYDROGEN 9.4.1 Physical Properties Dihydrogen is a colourless, odourless, tasteless, combustible gas. It is lighter than air and insoluble in water. Its other physical
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