Ncert Solutions Chemistry Class 12th

In the following reaction sequence

The purest form of commercial iron is

The atomic radius of $\mathrm{A}\mathrm{g}$ $$ is closest to

The refining method used when the metal and the impurities have low and high melting temperatures, respectively is

In the following reactions, products(A) and $\left(B\right)$ respectively are $\underset{\text{(Hot and Conc)}}{\mathrm{N}\mathrm{a}\mathrm{O}\mathrm{H}}+{\mathrm{C}\mathrm{l}}_2?\left(\mathrm{A}\right)+$ side products $\mathrm{C}\mathrm{a}(\mathrm{O}\mathrm{H}{)}_2{\mathrm{C}\mathrm{l}}_2?(\mathrm{B})+$ side products (Dry)

When 10 ml of an aqueous solution of Fe²? ions was titrated in the presence of dil H?SO? using diphenylamine indicator, 15 mL of 0.02 M solution of K?Cr?O? was required to get the end point. The molarity of the solution containing Fe²? ions is x * 10?²M. The value of x is ______. (Nearest integer)

Which one of the products of the following reactions does not react with Hingberg reagent to form sulphonamide?
[Four different reduction reactions of nitriles and nitro compounds]

Which one of the following chemical agent is not being used for dry-cleaning of clothes?

CO₂ gas adsorbs on charcoal following Freundlich adsorption isotherm. For a given amount of charcoal, the mass of CO₂ adsorbed becomes 64 times when the pressure of CO₂ is doubled. The value of n in the Freundlich isotherm equation is _______ * 10⁻². (Round off to the Nearest integer)

Sodium stearate CH?(CH?)?COO?Na? is an anionic surfactant which forms micelles in oil. Choose the correct statement for it from the following: