NTA JEE Main 4th April 2015 Offline

The molecular formula of a commercial resin used for exchanging ions in water softening is $$C_8H_7SO_3Na$$ (molecular weight = 206). What would be the maximum uptake of $$Ca^{2+}$$ ions by the resin if expressed in mol per gm?

Which of the following is the energy of a possible excited state of hydrogen?

The ionic radii (in $$\mathring{A}$$) of $$N^{3-}$$, $$O^{2-}$$ and $$F^{-}$$ are respectively:

The intermolecular interaction that is dependent on the inverse cube of distance between the molecules is:

The following reaction is performed at 298 K.
$$2NO(g) + O_2(g) \rightleftharpoons 2NO_2(g)$$
The standard free energy of the formation of $$NO(g)$$ is 86.6 kJ mol$$^{-1}$$ at 298 K. What is the standard free energy of the formation of $$NO_2(g)$$ at 298 K? $$(K_P = 1.6 \times 10^{12})$$

The standard Gibbs energy change at 300 K for the reaction $$2A \rightleftharpoons B + C$$ is 2494.2 J. At a given time, the composition of the reaction mixture is $$[A] = \frac{1}{2}$$, $$[B] = 2$$ and $$[C] = \frac{1}{2}$$. The reaction proceeds in the:
[R = 8.314 J/K-mol, e = 2.718] {Given antilog (-0.44) = 0.36}

From the following statements, choose the incorrect statement regarding $$H_2O_2$$.

Which one of the following alkaline earth metal sulphates has its hydration enthalpy greater than its lattice enthalpy?

In Carius method of estimation of halogens, 250 mg of an organic compound gave 141 mg AgBr. What is the percentage of bromine in the compound (atomic mass of Ag = 108 and atomic number of Br = 80)?

Which of the following compounds will exhibit geometrical isomerism?