List of top Questions asked in KEAM- 2025

In a reaction, \( 3A \rightarrow \text{Products} \), the concentration of \( A \) decreases from 0.6 mol L\(^{-1}\) to 0.3 mol L\(^{-1}\) in 20 minutes. What is the rate of the reaction during this interval?

Benzene diazonium chloride on treatment with reagent 'X' gives iodobenzene. The reagent ‘X’ is

The number of moles of alkyl halides required to convert primary amine into quaternary ammonium salt is
The order of boiling point of the following amines is (i) Butan-1-amine
(ii) N-Ethylethanamine
(iii) N,N-Dimethylethanamine
In dielectrics, polarization is the dipole moment per unit
The intensity of a polarized light can be controlled by a second polarizer from
An aromatic compound (X) of molecular formula, C7H7Cl, on ammonolysis gives Y (Molecular formula, C7H9N). The compound Y reacts with two moles of CH3Cl gives N, N-Dimethylphenylmethanamine. The compounds 'X' and 'Y' are
If the amplitude of the wave \( y = 3\sin(3x - 5t) + A\cos(3x - 5t) \) m is 5 m, the value of A is
The product obtained on ozonolysis of 3-Ethylpent-2-ene are
Which of the following transition elements has both bcc and ccp structures at normal temperature?
Which of the following compounds is used to cover the surface of a metallic object to prevent corrosion?
Which of the following is an outer orbital complex?
What is the color of the complex \([Ni(en)_3]^{2+}\) in water?
The temperature and pressure required for reforming benzene from n-hexane is
The formula of Ammonium phosphomolybdate is
When C6H5CHO reacts with the mixture of HNO3 and H2SO4 at 273-283K, it gives
The order of energy of orbitals in the same subshell is
The correct order of ionization enthalpy is
If a particle is moving with a momentum of (2 × 1010) h kg·m/s, then the de Broglie wavelength associated with it (in angstrom) is (where h is Planck's constant)
The increasing order of atomic radii is
The eye defect astigmatism can be corrected by using a
A solution is prepared by adding 4 g of a substance to 46 g of ethanol. What is the mass percentage of the solute?
Oxidation of gluconic acid with nitric acid gives
Which of the following molecules has 3 bond pairs and 2 lone pairs of electrons?
Which of the following gases has the lowest solubility in water at 298 K?