List of top Chemistry Questions asked in AIIMS

The combustion enthalpies of carbon, hydrogen and methane are $-395.5\, kJ\, mol ^{-1},-284.8\, kJ\, mol ^{1}$ and $-890.4\, kJ \,mol ^{-1}$ respectively at $25^{\circ} C$. The value of standard formation enthalpies of methane at that temperature is
The boiling point of $CCl _{4}$ is higher than that of $CHCl _{3}$ because
Sodium thiosulphate is used in photography to
Salicylic acid is prepared from phenol by
Portland cement contains the following amount of $CaO$
Gasoline is a mixture of hydrocarbons containing
Baking soda or baking powder is
$H _{3} PO _{3}$ is dibasic acid. Two hydrogen atoms are directly attached to the P.
Which is not hydrolysed?
A gas $z$ is bubbled through a solution containing $x ^{-}$ and $y ^{-}$. If the reduction potential are in the order $x>y>z$, then
The formula of microcosmic salt and the product obtained by heating it is
A molecule contains atoms $x$ and $y$ so that $x$ occurs at the corners of the cube while $y$ at the face centre. The formula of the molecule can be
Which of the following is true about $ClO _{2}$ ?
Which of the following has a tendency for covalent compound formation?
Oxidation state of sulphur in $S _{8}, H _{2} S$ and $S _{2} F _{2}$ is
$CuSO _{4}$ dissolves in $NH _{3}$ due to the formation of
Which of the following is paramagnetic?
Natural rubber is a polymer of
Which of the following metals is present in brass, bronze and german-silver?
The specific heat of a metal is $0.16.$ Its approximate atomic weight would be
Principal, azimuthal and magnetic quantum numbers are respectively related to
The radii of $F , F ^{-}, O$ and $O ^{-2}$ are in the order of
Which of the following is a colligative property ?
Which of the following is a colligative property?
The equivalent weight of phosphoric acid $\left( H _{3} PO _{4}\right)$ in the reaction: $NaOH + H _{3} PO _{4} \rightarrow NaH _{2} PO _{4}+ H _{2} O$ is