Calculate the number of atoms present in 1 g of an element if it forms fcc unit cell structure. $\left[\rho \times \mathrm{a}^3=6.8 \times 10^{-22} \mathrm{~g}\right]$

Which carbon atoms of $\alpha-D$ glucose and $\beta-D$ fructose respectively forms glycosidic linkage in sucrose?

What is the coordination number of central metal ion if it forms octahedral complex?

Nitric oxide reacts with $\mathrm{H}_2$ according to reaction. $2 \mathrm{NO}_{(\mathrm{g})}+2 \mathrm{H}_{2(\mathrm{~g})} \rightarrow \mathrm{N}_{2(\mathrm{~g})}+2 \mathrm{H}_2 \mathrm{O}_{(\mathrm{g})}$.

Identify the correct relationship for consumption of reactant and formation of product.