List of top Questions asked in AIIMS

The reduction potential at $pH = 14$ for the $Cu^{2+} /Cu$ couples is [ Given , $E^{\circ}_{Cu^{2+}}/Cu = 0.34 \,V; K_{sp} Cu(OH)_2 = 1\times 10^{-19}$

Which of the following induces parturition?

The source of taq polymerase used in PCR is a

Stomatal opening is affected by

Abscisic acid is known as the stress hormone because it

A spherical drop of capacitance 1 $\mu$F is broken into eight drops of equal radius. Then, the capacitance of each small drop is

In a set of reactions, acetic acid yielded product $ D.C{{H}_{3}}COOH\xrightarrow{SOC{{l}_{2}}}A\xrightarrow[Anhy.\,\,AlC{{l}_{3}}]{Benzene} $ $ B\xrightarrow{HCN}C\xrightarrow{HOH}D $ . The structure of $ D $ would be

The half-life of radioactive element is $600 \,yr$. The fraction of sample that would remain after $3000 \,yr$ is

In the capacitor of capacitance $C$, charge $Q$ and energy $W$ is stored. If charge is increased upto $2Q$, the energy stored will be

A balloon is filled at $27^{\circ}C$ and $1$ atm pressure by $50\, m^3\,He$. At -$3^{\circ}C$ and $0.5$ atm pressure, the volume of $He$ will be

The particle of mass $50\, kg$ is at rest. The work done to accelerates it by $20\,m/s$ in $10\,s$ is

The moment of inertia of a circular loop of radius $R$, at a distance of $R/2$ around a rotating axis parallel to horizontal diameter of loop is

$1$ mole of gas occupies a volume of $200 \,mL$ at $100 \,mm$ pressure. What is the volume occupied by two moles of gas at $400 \,mm$ pressure and at same temperature?

In air the value of the total electric flux emitted from unit positive charge is

In designing, a beam for its use to support a load. The depression at centre is proportional to (where, $Y$ is Young?s modulus)

Freon used as refrigerant is

: Equal moles of different substances contain same number of constituent particles. : Equal weights of different substances contain the same number of constituent particles.

The weight of iron which will be converted into its oxide $\left( Fe _{3} O _{4}\right)$ by the action of $18\, g$ of steam on it will be (At. wt. of $Fe =56$ )

Protons or hydrogen ions produced by photolysis of water accumulate in the lumen of thylakoids. Photolysis of water takes place in inner membrane of thylakoid.

: Higher the molal depression constant of the solvent used, higher the freezing point of the solution. : Depression in freezing point does not depend on the nature of the solvent.

A small uncharged metallic sphere is positioned exactly at a point midway between two equal and opposite point charges. If the sphere is slightly displaced towards the positive charge and released then

The oxidation state of chromium in the final product formed by the reaction between $KI$ and acidified potassium dichromate solution is

Find the number of stereoisomers of 1,2-dihydroxy cyclopentane.

: Both Grignard reagent and dialkyl cadmium react with acid chlorides to form tert-alcohols. : Grignard reagents are as reactive as dialkyl cadmium.

: A catalyst increases the rate of a reaction. : In presence of a catalyst, the activation energy of the reaction decreases.