KVPY Government Jobs Exams

At 783 K in the reaction H2(g) + I2(g) 2HI (g), the molar concentrations (mol-1) of H2, I2 and HI at some instant of time are 0.1, 0.2 and 0.4, respectively. If the equilibrium constant is 46 at the same temperature, then as the reaction proceeds
option
(A) the amount of HI will increase
(B) the amount of HI will decrease
(C) the amount of H2 and I2 will increase
(D) the amount of H2 and I2 will not change

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KVPY Other Question

Among (i) [CO(NH3)6]Cl3, (ii) [Ni(NH3)6]Cl2, (iii) [Cr(H2O)6]Cl3, (iv) [Fe(H2O)6]Cl2 the complex which is diamagnetic is
option
(A) i
(B) ii
(C) iii
(D) iv You remove four fresh tobacco leaves of similar size and age. Leave "leaf 1" as it is, smear "leaf 2" with
vaseline on the upper surface, "leaf 3" on the lower surface and "leaf 4" on both the surfaces. Hang the leaves
for a few hours and you observe that leaf 1 wilts the most, leaf 2 has wilted, leaf 3 wilted less than leaf 2 and
leaf 4 remains fresh. Which of the following conclusion is most logical ?
(A) tobacco leaf has more stomata on the upper surface
(B) tobacco leaf has more stomata on the lower surface
(C) stomata are equally distributed in upper and lower surfaces
(D) no conclusion on stomatal distribution can be drawn from this experiment