Explanation
In aluminothermic process, Thermite contains 3 parts of Fe2O3 and one part of Al.
B2H6 has two types of B–H bonds.
Zeolite have SiO4 & AlO4 tetrahadrones linked together in a three dimensional open structure in which four or six member ring predominate. Due to open chain structure they have cavities & can take up water & other small molecules.
Crook's glass is a special type of glass containain cerium oxide. It does not allow the passage of ultraviolate rays & is used for making lense
Sodium oxalate react with conc. H2SO4 to form CO & CO2 gas
Inert pair effect become significant for 6th & 7th period of p- block element.
Pb3O4 is mixed oxide. It can be represented as 2PbO – PbO2
Noble gas are found in very minute amount in atmosphers. These are separated from each other by using coconut char coal. Which absorb different gas at different temperatures.
Solid CO2 is known as dry ice because it evaporate at -18o C without changing in Liquid state.
When hydrogen peroxide reacts with PbS then they forms PbSO4
Silicon occurs in combined state in nature as silica, SiO2
It is hydrolysed with water to form a Si(OH)4
Metal oxides or some salts are fused with glass to imparted colour of glass.
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