Chemistry - Complete Pblock- Question with Solution | TestHub

An inorganic compound$\left(\mathrm{A}\right)$made of two most occurring elements in the earth’s crust and it is used in building construction when made to react with carbon forms a poisonous gas$\left(\mathrm{B}\right)$which is diatomic molecule. Compounds$\left(\mathrm{A}\right)$and$\left(\mathrm{B}\right)$are