List of top Chemistry Questions asked in KEAM

The reagent that can be used to distinguish between methanoic acid and ethanoic acid is:
The shape of cuprammonium ion is
$200\, mL$ of water is added to a $500\, mL$ of $0.2 \,M$ solution. What is the molarity of this diluted solution?
The correct equation for the degree of association $'\alpha'$ of an associating solute, $'n'$ molecules of which undergoes association in solution, is
The increasing order of electronegativity of the three elements O,F and Na is
If $1.5$ moles of oxygen combines with $Al$ to form $Al_2O_3$, the mass of $Al$ in g [Atomic mass of $Al = 27$] used in the reaction is
Among the following species, identify the pair having same bond order $ C{{N}^{-}},O_{2}^{-},N{{O}^{+}},C{{N}^{+}} $
In a first order reaction, the concentration of reactant is reduced to $1/8$ of the initial concentration in $75$ minutes at $298 \,K$. What is the half-life period of the reaction in minutes?
When a gas is bubbled through water at $298\, K$, a very dilute solution of the gas is obtained. Henry?s law constant for the gas at $298 \,K$ is $100\, kbar$. If the gas exerts a partial pressure of $1\, bar$, the number of millimoles of the gas dissolved in one litre of water is
The partial pressure of nitrogen in air is $0.76\, atm$. and its Henry?s law constant is $7.6 \times 10^4$ atm at 300 K. What is the mole fraction of $N_2$ in the solution obtained when air is bubbled through water at 300 K?
The letter ?$D$? in $D$-carbohydrates represents
Uncertainty principle is valid for
The energy of an electron in the $3\,S$ orbital (excited state) of $H$ - atom is
Which of the following is the correct unit of angular momentum of an lectron in an orbital of an atom?
$ A(g)+3B(g)4C(g) $ Initially concentration of $ A $ is equal to that of $ B $ . The equilibrium concentrations of $ A $ and $ C $ are equal. $ {{K}_{c}} $ is:
The basicity of pyrophosphorous acid is
Among the following, which species represents a pseudohalide?
An alkene $ {{C}_{4}}{{H}_{8}} $ , was treated with ozone and then with zinc and water to give acetone and formaldehyde. The alkene is:
$ {{(C{{H}_{3}})}_{3}}CMgCl $ on reaction with $ {{D}_{2}}O $ produces
An atom with high electronegativity has
Among the following, the optically active compound is
Complete combustion of 0.858 g of compound $ X $ gives 2.63 g of $ C{{O}_{2}} $ and 1.28 g of $ {{H}_{2}}O $ . The lowest molecular weight which $ X $ can have, is:
A binary solid has a primitive cubical structure with $B^-$ ions constituting the lattice points and $A^+$ ions occupying $25\%$ of its tetrahedral holes. The molecular formula of the crystal is
Sphalerite is concentrated by
IUPAC name of $ C{{H}_{3}}CH=\underset{\begin{align} & | \\ & C{{H}_{2}} \\ & | \\ & C{{H}_{3}} \\ \end{align}}{\mathop{C}}\,C{{H}_{3}} $