List of top Chemistry Questions asked in KEAM

The calculated magnetic moment of two dipositive ions of 3d series element is 4.9 BM. The ions are
The first transition series metal that exhibits only +2, +3, +4 and +6 oxidation states is
The substance used to convert sodium chromate to sodium dichromate in one of the stages of preparation of potassium dichromate is
\([Ag(NCS)_2]^-\) and \([Ag(SCN)_2]^-\) are
Which of the following aqueous non-electrolyte solution will produce the highest freezing point if 20g of the solute is dissolved in 1000g of water?
The units of rate constants of two reactions I and II are respectively mol\(^{-1}\) L s\(^{-1}\) and mol L\(^{-1}\)s\(^{-1}\). Then,
Isotonic solutions have identical
The limiting molar conductance for aqueous solution of CaCl\(_2\) at 298K is 271.6 S cm\(^2\) mol\(^{-1}\). If the limiting ionic conductance of Ca\(^{2+}\) ion at the same temperature is 119 S cm\(^2\) mol\(^{-1}\) what is the limiting ionic conductance of Cl\(^-\) ion?
Which of the following is a first order reaction?
In which of the following compound oxygen is in -1 oxidation state?
The mathematical statement of the first law of thermodynamics with the usual notation is
Kc for the reaction A(g) + 2B(g) \(\rightleftharpoons\) C(g) + 2D(g) is 4.0 at 300 K. What is the value of K'c for the reaction, 2C(g) + 4D(g) \(\rightleftharpoons\) 2A(g) + 4B(g) at 300 K?
The pH of an aqueous solution of weak mono acidic base is 11. What is the [H\(^+\)] of the solution? [pKw = 14]
Which of the following is an intensive property?
Which of the following half-cell reaction has the most negative standard electrode potential?
1 g of graphite is burnt completely in excess oxygen at 298K and 1 atmospheric pressure in a bomb calorimeter. During the reaction, the temperature raises from 298K to 299K. If the heat capacity of the bomb calorimeter is 20.7 kJ K\(^{-1}\), what is the enthalpy of combustion of C(gr)? (Atomic mass of carbon is 12 g mol\(^{-1}\))
The hybridization involved in the central atom of \(PCl_5\) is
Which one of the following molecules has the lowest bond length (in pm)?
The molecule with expanded octet is
The wavelength of a fast moving particle (\(\lambda\)) is related to its momentum (p) and Planck’s constant (h) as
Which one of the following elements has the largest atomic radius?
Mendeleev called the undiscovered element after aluminium at his time as Eka-aluminium. What is the present name of the element after its discovery?
According to the law of triads, the properties of the middle element were in between those of the other two elements. This law was proposed by
The wave number of an yellow radiation with wavelength 580 nm is
The molarity of an aqueous solution containing 0.4g of NaOH (molar mass=40g/mol) in 250mL of a solution is