List of top Questions asked in KEAM

The value of \( \sin^{-1} \left( \frac{2\sqrt{2}}{3} \right) + \sin^{-1 \left( \frac{1}{3} \right) \) is equal to:}

The truth values of \( p, q \) and \( r \) for which \( (p \wedge q) \vee (\sim r) \) has truth value F are respectively:

The shaded region shown in the figure is given by the inequations: [height=5cm]{Screenshot 2026-05-01 102102.png}

The number of solutions of the inequation \( |x - 2| + |x + 2| < 4 \) is:

The number of solutions for the system of equations \( 2x + y = 4 \), \( 3x + 2y = 2 \), and \( x + y = -2 \) is:

The reaction of H\textsubscript{2 is given below
H\textsubscript{2} + CO + R--CH=CH\textsubscript{2} \(\rightarrow\) R--CH\textsubscript{2}--CH\textsubscript{2}--CHO
is specifically called as}

The salt of an alkali metal gives violet colour in the flame test. Its aqueous solution gives a white precipitate with barium chloride in hydrochloric acid medium. The salt is

In which one of the following the central atom is sp\textsuperscript{3 hybridized?}

Which of the following are isoelectronic species?
(i) NH\textsubscript{3 (ii) CH\textsubscript{3}\textsuperscript{+} (iii) NH\textsubscript{2}\textsuperscript{--} (iv) NH\textsubscript{4}\textsuperscript{+}
Choose the correct answer from the codes given below}

At 273 K, the density of a certain gaseous oxide at 2 atmosphere is same as that of dioxygen at 5 atmosphere. The molecular mass of the oxide (in g mol\textsuperscript{--1}) is

If two moles of an ideal gas at 500 K occupies a volume of 41 litres, the pressure of the gas is (R = 0.082 L atm K\textsuperscript{--1} mol\textsuperscript{--1})

The lattice energy of NaCl is $788 \text{ kJ mol}^{-1}$. This means that 788 kJ of energy is required}

Potassium dichromate belongs to which crystal system?

Arrange the following species in the correct order of their stability:
$C_2$, $Li_2$, $O_2^+$, $He_2^+$

Molecular formulae and shapes of some molecules are given below. Choose the incorrect match

Green chemistry deals with

The shortest wavelength of the line in hydrogen atomic spectrum of Lyman series when $R_H = 109678 \text{ cm}^{-1}$ is}

The carbohydrate used as storage molecules in animals is

Novlac, the linear polymer used in paints is

A 250 W electric bulb of 80% efficiency emits a light of 6626 \AA wavelength. The number of photons emitted per second by the lamp is ($h = 6.626 \times 10^{-34}$ Js)

The work function of a metal is 5 eV. What is the kinetic energy of the photoelectron ejected from the metal surface if the energy of the incident radiation is 6.2 eV? ($1 \text{ eV} = 1.6 \times 10^{-19} \text{ J}$)

The sugar moiety present in RNA molecule is

An organic compound with the molecular formula C\textsubscript{8H\textsubscript{8}O forms 2,4-DNP derivative, reduces Tollen's reagent and undergoes Cannizzaro reaction. On vigorous oxidation, it gives 1,2-benzenedicarboxylic acid. The organic compound is}

Phenyl isocyanide is prepared from aniline by

Choose the correct order of decreasing basic strength of the following compounds in aqueous solution
(i) C\textsubscript{6H\textsubscript{5}NH\textsubscript{2} (ii) C\textsubscript{2}H\textsubscript{5}NH\textsubscript{2} (iii) NH\textsubscript{3} (iv) (CH\textsubscript{3})\textsubscript{2}NH}