Among the following allotropic forms of sulphur, the number of allotropic forms, which will show paramagnetism is ______. (a) α-sulphur... View Article
(a) Kinetic energy of electron is ∝ Z2 / n2 (b) The product of velocity (v) of electron and principal quantum number (n). ‘vn’ ∝ z2 (c)... View Article
Match the following : 1) (i)-(d),(ii)-(c),(iii)-(e),(iv)-(a) 2) (i)-(b),(ii)-(a),(iii)-(c),(iv)-(d) 3) (i)-(b),(ii)-(d),(iii)-(e),(iv)-(a) 4)... View Article
The rate of a reaction decreased by 3.555 times when the temperature was changed from 40oC to 30oC. The activation energy (in KJ mol-1) of the... View Article
A solution of phenol in chloroform when treated with aqueous NaOH gives compound P as a major product. The mass percentage of carbon in P is... View Article
For Freundlich adsorption isotherm, a plot of log (x/m) (y-axis) and log p (x-axis) gives a straight line. The intercept and slope for the line... View Article
A crystal is made up of metal iron 'M1' and 'M2' and oxide ions. Oxide ions form a ccp lattice structure. The cation 'M1' occupies 50% of... View Article
1) the electrolysis of acidified water using Pt electrodes. 2) the reaction of Zn with dilute HCl 3) the electrolysis of brine solution 4) the... View Article
A set of solutions is prepared using 180 g of water as a solvent and 10g of different nonvolatile solutes A, B and C. The relative lowering of... View Article
For a reaction, 4M(s) + n O2(g) -> 2 M2 On (s) the free energy change is plotted as a function of temperature. The temperature below which the... View Article
