Chemistry Physical Chemistry questions from NEET UG 2014.
For the reversible reaction: ${N}_{2}(g)+3{H}_{2}(g)\rightleftharpoons 2N{H}_{3}(g)+heat$ The equilibrium shifts in forward direction:
Of the following $0.10m$ aqueous solutions, which one will exhibit the largest freezing point depression?
When $22.4$ litres of ${H}_{2}(g)$ is mixed with $11.2$ litres of $C{l}_{2}(g),$ each at STP, the moles of $HCl(g)$ formed is equal to
$1.0 g$ of magnesium is burnt with $0.56 g$ ${O}_{2}$ in a closed vessel. Which reaction is left in excess and how much? (At, wt. $Mg=24;O=16)$
Calculate the energy in corresponding to light of wavelength $45 nm:$ (Planck’s constant $h=6.63\times {10}^{-34}Js:speed of light c=3\times {10}^{8} m{s}^{-1})$
For the reaction: ${X}_{2}{O}_{4}(l)\rightarrow 2X{O}_{2}(g)$ $\Delta U=2.1 k \mathrm{cal}, \Delta S=20 \mathrm{cal} {K}^{-1}$ at $300 K$ Hence, $\Delta G$ is:
For a given exothermic reaction ${K}_{p}$ and ${K'}_{p}$ are the equilibrium constants at temperatures ${T}_{1}$ and ${T}_{2}$ respectively (T$_{2}$.>T$_{1}$ ). Assuming that heat of reaction is constant in temperatures range between ${T}_{1}$ and ${T}_{2},$ it is readily observed that:
The pair of compounds that can exist together is:
Which of the following salts will give highest $pH$ in water?
When $0.1 mol {MnO}_{4}^{2-}$ is oxidized the quantity of electricity required to completely $Mn{O}_{4}^{2-}$ to $Mn{O}_{4}^{-}$ is
What is the maximum number of orbitals that can be identified with the following quantum number $n=3, l=1, m=0$?
$B{e}^{2+}$ is isoelectronic with which of the following ions?
Magnetic moment $2.83$ BM is given by which of the following ions? (At.nos. $Ti=22,Cr=24, Mn=25, Ni=28)$
The weight of silver (at.wt. $=108$) displaced by a quantity of electricity which displaces $5600 mL$ of ${O}_{2}$ at $\mathrm{STP}$ will be
Using the Gibbs change, $\Delta {G}^{o}=+63.3 kJ,$ for the following reaction, $A{g}_{2}C{O}_{3}(g) \rightleftharpoons 2A{g}^{+}(aq)+C{O}_{3}^{2-}(aq)$ the ${K}_{sp}$ of $A{g}_{2}C{O}_{3}(s)$ in water at ${25}^{o}C$ is $(R=8.314 J{K}^{-1}mo{l}^{-1})$