List of top Questions asked in AIIMS- 2012

The aqueous solution containing which one of the following ions will be colourless? (Atomic number of $Sc = 21, Fe = 26, Ti = 22, Mn = 25$)
Freon used as refrigerant is
Of the following, the oxime of which shows geometrical isomerism is
Which has the highest nucleophilicity?
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
Abscisic acid is known as the stress hormone because it
Stomatal opening is affected by
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