Water glass, also called sodium silicate or soluble glass, a compound containing sodium oxide (Na₂O) and silica (silicon dioxide, SiO₂) that forms a glassy solid with the very useful property of being soluble in water. Water glass is sold as solid lumps or powders or as a clear, syrupy liquid. It is used as a convenient source of sodium for many industrial products, as a builder in laundry detergents, as a binder and adhesive, as a flocculant in water-treatment plants, and in many other applications.

Water glass, also called sodium silicate or soluble glass, a compound containing sodium oxide (Na₂O) and silica (silicon dioxide, SiO₂) that forms a glassy solid with the very useful property of being soluble in water. Water glass is sold as solid lumps or powders or as a clear, syrupy liquid. It is used as a convenient source of sodium for many industrial products, as a builder in laundry detergents, as a binder and adhesive, as a flocculant in water-treatment plants, and in many other applications.

বালি=সিলিকন ডাই-অক্সাইড

A gas consisting mainly of carbon monoxide and hydrogen, made by passing steam over red-hot coke and burning with a blue flame, used especially as a source of hydrogen; also called blue gas, water gas.

Ref: HZ-659 (2nd) 

ব্যাখ্যা: প্রাকৃতিক গ্যাস → CH₄ 

ওয়াটার গ্যাস → CO + H₂

প্রডিউসার গ্যাস 2CO + N₂

Type explanation here...