List of top Chemistry Questions asked in AIIMS

Critical temperature of CO is 304 K, it cannot be liquified above 304 K. At a certain temperature, $volume \propto\frac{1}{pressure}$
Charcoal is used in separation of noble gases. Charcoal has porous structure.
bond angle is less than the normal tetrahedral bond angle. Lone pair-lone pair repulsion decreases bond angle.
2-Methyl-1, 3-butadiene is the monomer of natural rubber. Natural rubber is formed through anionic addition polymerisation.
According to Bohr?? theory, which of the following correctly represents the variation of energy and radius of an electron in n orbit of H-atom?
$H_3BO_3$ is a weak acid. Water extracts the proton of $H_3BO_3$.
Arrange the given compounds in decreasing order of boiling points.
Ease of nucleophilic addition in the given compounds is
Which of the following reagents cannot be used for the given conversion?
The acidic strength of the given compounds follows the order
A conductivity cell has a cell constant of 0.5 cm. This cell when filled with 0.01 M NaCl solution has a resistance of 384 ohms at 25$^{\circ}$C. Calculate the equivalent conductance of the given solution.
Paints and hair creams are respectively
How many Faradays of electricity are required for the given reaction to occur ? $ {MnO4^{-} -> Mn^{2+}}$
One mole of NaCl contains 6.023 ??10 molecules of sodium chloride. 58.5 g of NaCl also contains 6.023 ??10 molecules of NaCl.
Which of the following statement is true ?
$ CH_3 - CH_2 - CH = CH_2 + HBr$ $ \xrightarrow{ROOR\text{(peroside)}} \underset{\text{Major}}{(X)} + \underset{\text{Minor}}{(Y)}$ $X$ and $Y$ respectively are
$CN^-$ ion is an ambident nucleophile. Nucleophiles are electron rich species.
A vessel of one litre capacity containing $1$ mole of $SO_3$ is heated till a state of equilibrium is attained. $ {2SO3_{(g)} <=> 2SO2_{(g)} + O2_{(g)}}$ At equilibrium, $0.6 \,moles$ of $SO_2$ had formed. The value of equilibrium constant is
' $a$ ' moles of $PCl _{5}$ are heated in a closed container to equilibriate $PCl _{5}(g) \rightleftharpoons PCl _{3}(g)+ Cl _{2}(g)$ at a pressure of $p$ atm. If $x$ moles of $PCl _{5}$ dissociate at equilibrium, then

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R

Assertion (A) : Gabriel phthalimide reaction can be used to prepare aryl and alkyl amines. 

Reason (R) : Aryl halides have same reactivity as alkyl halides towards nucleophilic substitution reactions

In the light of the above statements, choose the correct answer from the options given below

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R

Assertion (A) : Graphite is a good conductor of heat and electricity. 

Reason (R) : Graphite has all the electrons firmly held together in \(C - C \sigma\)-bonds.

In the light of the above statements, choose the correct answer from the options given below

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R

Assertion (A) : Sodium reacts with oxygen to form \(Na _{2} O _{2}\) but potassium reacts with oxygen to form \(KO _{2}\). 

Reason (R) : Potassium is more reactive metal than sodium.

In the light of the above statements, choose the correct answer from the options given below

$\Delta G^{\circ}$ versus $T$ plot in the Ellingham's diagram slopes downward for the reaction
Among the metals $Fe , Zn , Pb , Ag$ and $Pt$, which do not give a metal nitrate on treatment with concentrated $HNO _{3}$ ?
Arrange the given set of compounds in order of increasing boiling points. I. $1$-chloropropane II. Iso-propyl chloride III. $1$-chlorobutane