List of top Questions asked in AIIMS

Aldosterone is a steroid hormone and is important in the control of sodium and potassium ion concentration in mammals. It upgrades sodium ion concentration in the ECF by promoting reabsorption of sodium ions from renal tubules and excretion of potassium ions in urine.
: According to Kohlrausch law the molar conductivity of a strong electrolyte at infinite dilution is sum of molar conductivities of its ions. : The current carried by cation and anion is always equal.
A white source of light during interference forms only white and black fringes. Width of fringe is inversely proportional to the wavelength of the light used.
Downs syndrome is caused by an extra copy of chromosome number $21$. What percentage of offspring produced by an affected mother and a normal father would be affected by this disorder?
During translation initiation in prokaryotes, a $GTP$ molecule is needed in
An action potential in the nerve fibre is produced when positive and negative charges on the outside and the inside of the axon membrane are reversed, because
Patients suffering from cholera are given a saline drip because
Choose the correct sequence of stages of growth curve for bacetria
$E$. coli about to replicate was placed in a medium containing radioactive thynidine for five minutes. Then it was made to replicate in a normal medium. Which of the following observation will be correct?
An artificial pace-maker is implanted subcutaneously and connected to the heart in patients
Plasmids are suitable vectors for gene cloning because
In a given plant, red colour $(R)$ of fruits is dominant over white fruit $(r)$ : and tallness $(T)$ is dominant over dwarfness (t). If a plant with genotype $RRTt$ is crossed with a plant of genotype $rrtt$, what will be the percentage of tall plants with red fruits in the next generation?
$CH _{3} OC _{2} H _{5}$ and $\left( CH _{3}\right)_{3} C - OCH _{3}$ are treated with hydroiodic acid. The fragments after reactions obtained are
One mole of methanol when burnt in $O _{2}$, gives out $723\, kJ\, mol ^{-1}$ heat. If one mole of $O _{2}$ is used, what will be the amount of heat evolved?
Which of the following does not exist as a Zwitter ion?
The hydrocarbon which does decolourise alkaline $KMnO_{4}$ solution and also does not give any precipitate with ammoniacal silver nitrate is
Plexiglass is a commercial name of
The species having tetrahedral shape is
When $H _{2} S$ gas is passed through the $HCl$ containing aqueous solution of $CuCl _{2}, HgCl _{2}$, $BiCl _{3}$ and $CoCl _{2}$, it does not precipitate out
Which one of the following is the true covalent oxide of iodine?
The temperature dependence of rate constant $(k)$ of a chemical reaction is written in terms of Arrhenius equation $k=A e^{-E_{\alpha} / R T}$. Activation energy $\left(E_{a}\right)$ of the reaction can be calculated by ploting
Among the following components of cement which is present in highest amount?
The force of gravitation is
A particle of mass $m$ moves in the $XY$ plane with a velocity ' $v$ ' along the straight line $A B$. If the angular momentum of the particle with respect to origin $O$ is $L _{ A }$ when it is at $A$ and $L_{B}$ when it is at $B$, then
A charged particle (charge $q$) is moving in a circle of radius $R$ with uniform speed $v$. The associated magnetic moment $\mu$ is given by