List of top Chemistry Questions asked in AIIMS

Both chlorine and sulphur dioxide act as bleaching agents. Chlorine bleaches by vigorous oxidation, while sulphur dioxide bleaches by mild reduction.

Alkali metals impart colour to the flame. Their ionisation energies are low.

The functional group which is found in amino acid is

The most reactive compound, for the electrophilic nitration, is

The physical adsorption of gases on the solid surface is due to

In the gas equation: $PV = nRT$

The oxidation numbers of hydrogen in $K H ,\, MgH _{2}$ and $NaH$ are respectively

Which of the following does not show hydrogen bonding?

Which of the following explains the sequence of filling the electrons in different shells?

Which of the following is the most electropositive element?

The total number of orbitals in a shell can be given in the form of $n$. The principal quantum number is

Which of the following can give iodometric titration?

Vapour pressure of benzene at $30^{\circ} C$ is $121.8\, mm$. when $15\, g$ of a non-volatile solute is dissolved in $250\, g$ of benzene, its vapour pressure is decreased to $120.2\, mm$. The molecular weight of the solute is

If 1, 3-dibromopropane reacts with zinc and NaI, the product obtained is

A solution wiht $pH = 2$ is more acidic than one with a $pH = 6$, by a factor

A base, as defined by Bronsted theory, is a substance which can

The enthalphy change of a reaction does not depend upon

Which of the following is an alloy of aluminium?

Which of the following is not an aromatic compound?

Which of the following is not emitted by radioactive substance?

Brass is an alloy of copper (Cu) and

$NO_3^-$ is planar while $NH_3$ is pyramidal. $N$ in $NO_3^-$ is $sp^2$ and in $NH^3$ is $sp^3$ hybridized.

For the reaction $H_2(g) + I_2(g) \to 2HI (g)$ the change in enthalpy ($\Delta H$) will be

In the compound Lithium tetra-hydroaluminate, the ligand is

Which of the following compound, on reaction with $NaOH$ and $Na _{2} O _{2}$, gives yellow colour?