Explain the principle of electrolytic refining with an example.

Write a note on zeolites.

Give two equations to illustrate the chemical behaviour of phosphine.

Which is stronger reducing agent Cr²⁺ or Fe²⁺?

What is crystal field stabilization energy (CFSE)?

If NaCl is doped with 10^-2 mol percentage of strontium chloride, what is the concentration of  cation vacancy?

The time for half change in a first order decomposition of a substance A is 60 seconds. Calculate the rate constant. How much of A will be left after 180 seconds?

A saturated solution, prepared by dissolving CaF₂(s) in water, has \([Ca^{2+}]=3.3\times10^{-4}M\). What is the K_sp of CaF₂?

Calculate the standard emf of the cell: Cd|Cd²⁺||Cu²⁺|Cu and determine the cell reaction. The standard reduction potentials of Cu²⁺|Cu and Cd²⁺|Cd are 0.34V and -0.40 volts respectively. Predict the feasibility of the cell reaction.

Give three uses of emulsions.

What will be the product (X and A) for the following reaction acetylchloride \(\frac{\text { i) } \mathrm{CH}_{3} \mathrm{MgBr}}{\text { ii) } \mathrm{H}_{3} \mathrm{O}^{+}}{\longrightarrow} \mathrm{X} \stackrel{\text { acid } \mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}}{\longrightarrow}\) A 

Write the structure of the major product of the aldol condensation of benzaldehyde with acetone.

Identify A to E in the following sequence of reactions
   
 \(\overset { {CH_3} {CL} }{ \underset { {AlCl}_3 }{ \longrightarrow } }\) A \(\overset { {HNO_3}/ {H_2So_4} }{ \underset { {} }{ \longrightarrow } }\)  B \(\overset { {Sn} /{HCL} }{ \underset {{} }{ \longrightarrow } }\)  (C) \(\overset { {NaNo_2}/ {HCL} }{ \underset { {O^o}C }{ \longrightarrow } }\)  D \(\overset { {CuCN} }{ \underset { {}}{ \longrightarrow } }\) E

What are different types of RNA which are found in cell

Write a note on co –polymer