Chemistry Test ...

Which of the following statement is incorrect ?

For which group 'G', (P) is more acidic then benzoic acid :

Total number of enantiomeric pair for following compound is :

The rate constnat for the reaction

2N₂O₅ → 4NO₂ + O₂

is 3.0 × 10^–5 sec^­–1. if the rate is 2.4 × 10^–5­ mol litre^–1 sec^–1, then the concentration of N₂O₅(in mol litre^–1 ) is

1.0 molal aqueous solution of an electrolyte A₂B₃ is 60% ionised. The boiling point of the solution at 1 atm is 

Resistance of 0.2 M solution of an electrolyte is 50 Ω. The specific conductance of the solution is 1.4 S m^–1. The resistance of 0.5 M solution of the same electrolyte is 280 Ω. The molar conductivity of 0.5 M solution of the electrolyte in S m² mol^–1 is :

Experimentally it was found that a metal oxide has formula M_0.98O. Metal M, is present as M²⁺ and M³⁺ in its oxide. Fraction of the metal which exists as M³⁺ would be :-

Consider the equilibrium

HgO(s) + 4I^– (aq) + H₂O (l)   HgI₄^2– (aq) + 2OH^– (aq),

which changes will decrease the equilibrium concentration of HgI₄^2–

The molar heat capacities at constant pressure (assume constant with respect to temperature) of A, B and C are in ratio of 1.5 : 3.0 : 2.0 . If enthalpy change for the exothermic reaction A + 2B → 3C at  300 K is – 10 kJ/mol & C_p,m (2) is 300 J/mol then enthalpy change at 310 K is