Which element does not belongs to 3rd group? Boron is non metal whereas aluminum is metal, it is due to? Increase in atomic size in 3rd group is not regular, it is due to? One of the feature of boron is its ability to form? Borax is a white crystalline solid and it is? Boron does not form stable cation due to? Corundum is the most abundantly found mineral of? The metal used in thermite process because of its activity is? A elements 4? ______________% of the mass of the earth’s crust being due to the silicon? Calumniate is the common mineral of ________________? Oxides of lead are used as ___________? Cupric bonates are __________ in colour? Opal is hydra lied form of ______________?
Solution of ___________ is Opal is hydra lied form of ______________? Solution of ___________ is used in chemical formula of Asbestos is __________? Germanium, selenium and silicon are used as ___________ conductors? Common oxidation states of Boron are _________? Borax bead test is used for the detection of non-metallic anions? Catenation is remarkable property of carbon? Hydrolysis of Borax can be prevented in the presence of glycerin? In case of Borax bead test, Cr compounds indicate reddish-brown color beads in oxidizing flame?
On dissolution of Al with aqueous alkalies, hydrogen gas and aluminate ions are formed? Hydrated magnesium silicate is commonly known as silicones? Zircon, talc and magnesite are the common minerals of calcium? The stable yellow modification of lead chromate is orthorhombic? Methyl silicones of high molecular masses are used in making? Which element among the following does not belong to group IVA of the periodic table?