List of top Chemistry Questions asked in KEAM

Among methanamine, ethanamine. benzenamine, N-methylaniline and N, N-dimethylaniline, the weakest and the strongest base in aqueous phase, respectively are
Which one of the following molecules gives four isomeric monochlorides on photochemical chlorination?
'
Toluene on treatment with chromic oxide in acetic anhydride at 273K to 283K gives
Resorcinol is
Which one of the following is not not an ore of iron?
The overall complex dissociation equilibrium constant for [Cr(H2O)6]3- ion is 5×10-12. The overall stability constant of the complex is
Which one of the following molecules contains only primary and tertiary carbon atoms?
Match the following:

a)Alkane(i)Phenol
b)Alicyclic compound(ii)Tropolone
c)Benzenoid aromatic compound(iii)Isobutane
d)Non-benzenoid aromatic compound(iv)Furan
e)Heterocyclic compound(v)Cyclohexene


Choose the correct option:
The elemental analysis of an oranic compond gave C:38.71%, H: 9.67%. What is the empirical formula of the compound?
Which of the following compounds is used as refrigerant?
Which of the following set of transition metals have high volatility?
Match the following:
a)Saline hydride(i)CrH
b)Electron-deficient hydride(ii)CH4
c)Electron-precise hydride(iii)BeH2
d)Electron-rich hydride(iv)B2H6
e)Metallic hydride(v)H2O

Choose the correct option:
The complexes [Co(NH3)5NO2]Cl2 and [Co(NH3)5ONO]Cl2 are
The metal which dissolves in liquid ammonia to give a blue-black solution due to formation of solvated electron is
Both Cr2+ and Mn3+ have d4 configuration. Which one of the following is true?
Which one of the following processes does not produce dinitrogen?
The half-life period of a first order reaction at 298K is 20 minutes. The time (in min.) required for 99.9% completion of the reaction at the same temperature, is
The critical temperature of some gases are: Methane 190K, ammonia 405K, carbon dioxide 304K, n-butane 425K and dihydrogen 33K. The gas that is adsorbed to the maximum extent on 1g of activated charcoal at a given temperature is
Which one of the following is not true with regard to physisorption?
The standard electrode potentials of some electrodes are given below:
Fe3+/Fe2+ 0.77V;   Br2/Br- 1.09V;    I2/I- 0.54V;    Zn2+/Zn(s) -0.76V;
Ag+/Ag(s) 0.80V;    Fe2+/Fe(s) -0.44V;    Cu2+/Cu(s) 0.34V
Predict the reaction that is not feasible:
Some of the reactions and their equilibrium constants Kc are given. Choose the reaction which proceeds rarely at the given temperature.
The equilibrium constants for the following two reactions at 298k are given below:
2A ⇋ B+C; K1 =16
2B + C ⇋ 2X; K2 = 25
What is the value of k for the reaction, \(A+\frac{1}{2}B \rightleftharpoons X\) at 298K?
The average oxidation number of bromine in Br3O8 is
A metal 'X' crystallizes in a body-centered cubic structure and its metallic radius is 346.4 pm. The length (in pm) of the unit cell is
The dipole-dipole interaction energy between rotation polar molecules is proportional to___, where 'r' is the distance between polar molecules.