IIT-JEE 1997

Which one of the following compounds has sp2 hybridization?

The critical temperature of water is higher than that of O2 because the H2O molecule has

Which contains both polar and non-polar bonds?

A compound of vanadium has a magnetic moment of 1.73 BM. Work out the electronic configuration of the vanadium ion in the compound.

Calculate the equilibrium constant for the reaction
Fe2+ + Ce4+ \(\leftrightharpoons\) Fe3+ + Ce3+
(given \(E_{C{e^{4 + }}/C{e^{3 + }}}^o\) = 1.44 V; \(E_{F{e^{3 + }}/F{e^{2 + }}}^o\) = 0.68 V)

How many grams of silver could be plated out on a serving tray by electrolysis of a solution containing silver in +1 oxidation state for a period of 8.0 hours at a current of 8.46 amperes? What is the area of the tray if the thickness of th...

Give reactions for the oxidation of hydrogen peroxide with potassium permanganate in acidic medium.

To a 25ml H2O2 solution, excess of acidified solution of potassium iodide was added. The iodine liberated required 20 ml of 0.3 N sodium thiosulphate solution. Calculate the volume strength of H2O2 solution.

Element A burns in nitrogen to give an ionic compound B. Compound B reacts with water to give C and D. A solution of C becomes 'milky' on bubbling carbon dioxide. Identify A, B, C and D.

Arrange the following sulphates of Alkaline earth metals in order of decreasing thermal stability : BeSO4, MgSO4, CaSO4, SrSO4

Give reasons of the following:
The crystalline salts of alkaline earth metals contain more water of crystallisation than the corresponding alkali metal salts.

For a d-electron the orbital angular momentum is