List of top Chemistry Questions asked in AIIMS

The type of hybrid orbitals used by iodine atom in hypoiodous acid molecule are
: One molar aqueous solution has always higher concentration than one molal. : The molality of a solution depends upon the density of the solution whereas molarity does not.
The equivalent weight of $H _{3} PO _{2}$, when it disproportionates into $PH _{3}$ and $H _{3} PO _{3}$ is
Oxidation state of $Fe$ in $Fe ( CO )_{5}$ is zero. $EAN$ of $Fe$ in this complex is $36$.
The molality of the solution does not change with change in temperature. The molality is expressed in units of moles per $1000\, g$ of solvent.
Stomach acid, a dilute solution of $HCl$ in water, can be neutralized by reaction with sodium hydrogen carbonate, $ {NaHCO_3_{(aq)} +HCL_{(aq)} ->NaCL_{(aq)} +H_2O_{(l)} +CO_2_{(g)} }$ How many milliliters of 0.125 M NaHCO solution are needed to neutralize 18.0 mL of 0.100 M HCL?
The overall order of the reaction is the sum of the exponents of all the reactants in the rate expression. There are many higher order reactions.
S.I. unit of atomic mass and molecular mass is kilograms. Atomic mass is equal to the mass of $6.023 \times 10^{24}$ atoms.
In a homonuclear molecule, which of die following sets of orbitals is degenerate?
What is the $pH$ of $0.01\, M$ glycine solution? For glycine $K_{a_1} = 4.5 \times 10^{-3}$ and $K_{a_2} = 1.7 \times 10^{-10}$ at $298 \,K$.
The shape and hybridisation of some xenon oxyfluorides are given. Choose the wrong set.
Structural formula of Lewisite is
The phosphate of a metal has the formula $MHPO_4$. The formula of its chloride would be
The electronic configuration of actinides cannot be assigned with degree of certainty because of
The correct order of basic strength of $CH _{3} NH _{2}$ (I), $\left( CH _{3}\right)_{2} NH$ (II), $\left( CH _{3}\right)_{3} N$ (III), $C _{6} H _{5} CH _{2} NH _{2}$ (IV) in gaseous phase is
Which of the following reaction is an example of calcination process?
Pressure versus temperature graph of an ideal gas is as shown in figure. Density of the gas at point $A$ is $\rho_{0}$. Density at point $B$ will be
Passing $H _{2} S$ gas through nitric acid produces
In tetragonal crystal system, which of following is not true?
Highest electron affinity is shown by
$CaO$ and $NaCl$ have the same crystal structure and approximately the same ionic radii. If $U$ is the lattice energy of $NaCl$, the approximate lattice energy of $CaO$ is
Butter is an example of which type of colloid?
Beryllium and aluminium exhibit many properties which are similar. But the two elements differ in
$S _{ N } 1$ reaction is basically a solvolysis reaction. Polar protic solvents help the substrate to ionise and by the way get involved in $S _{ N } 1$ reaction.
: Noble gases have positive electron affinity. : Noble gases have stable closed shell electronic configuration.