For the reaction equilibrium N2O4 (g) $$\leftrightharpoons$$ 2NO2 (g) the concentrations of N2O4 and NO2 at equilibrium are 4.8 $$\times$$ 10-2 and 1.2 $$\times$$ 10-2 mol L-1 respectively. The value of Kc for the reaction is

Consider the reaction equilibrium 2 SO2 (g) + O2 (g) $$\leftrightharpoons$$ 2 SO3 (g); $$\Delta H^o$$ = -198 kJ One the basis of Le Chatelier's principle, the condition favourable for the forward reaction is :

The correct order of increasing basic nature for the bases NH3, CH3NH2 and (CH3)2 NH is

Ethyl isocyanide on hydrolysis in acidic medium generates

Standard reduction electrode potentials of three metals A,B&C are respectively +0.5 V, -3.0 V & -1.2 V. The reducing, powers of these metals are

For a cell reaction involving a two-electron change, the standard e.m.f. of the cell is found to be 0.295 V at 25oC. The equilibrium constant of the reaction at 25oC will be

Several blocks of magnesium are fixed to the bottom of a ship to :

When during electrolysis of a solution of AgNO3, 9650 coulombs of charge pass through the electroplating bath, the mass of silver deposited on the cathode will be :

For the redox reaction Zn(s) + Cu2+(0.1 M) $$\to$$ Zn2+(1M) + Cu(s) taking place in a cell, $$E_{cell}^o$$ is 1.10 volt. Ecell for the cell will be (2.303{{RT} \over F} = 0.0591)

Nylon threads are made of

For making good quality mirrors, plates of float glass are used. These are obtained by floating molten glass over a liquid metal which does not solidify before glass. The metal used can be :

Which one of the following statements is correct?

A red solid is insolvable in water. However it becomes soluble if some $$K\mathrm{I}$$ is added to water. Heating the red solid in a test tube results in liberation of some violet colored fumes and droplets of a metal appear on the cooler parts of the test tube. The red solid is :

The radius of La3+ (Atomic number of La = 57) is 1.06 Å. Which one of the following given values will be closest to the radius of Lu3+ (Atomic number of Lu = 71) ?

The atomic numbers of vanadium (V), Chromium (Cr), manganese (Mn) and iron (Fe) are respectively 23, 24, 25 and 26. Which one of these may be expected to have the highest second ionization enthalpy?

What would happen when a solution of potassium chromate is treated with an excess of dilute nitric acid?

The number of d-electrons retained in Fe2+ (At no of Fe = 26) ion is :

Which one of the following nitrates will leave behind a metal on strong heating?

Which one of the following pairs of molecules will have permanent dipole moments for both members

The pair of species having identical shapes for molecules of both species is