List of top Questions asked in AIIMS

If man were standing unsymmetrically between parallel cliffs, claps his hands and starts hearing a series of echoes at intervals of $1\, s$. If speed of sound in air is $340 \,m\,s^{-1}$, the distance between two cliffs would be

If $C$ and $L$ denote the capacitance and inductance respectively, the units of $LC$ are

Half life of a radioactive material is $5$ years, then the percentage of it remained after $25$ years will be

Find the hydrolysis product of maltose.

Embryo sac is

Direction of electric field in P-N junction diode is

TMV is a rod-shaped virus. It is made up of protein coat and RNA.

The resistance of an ideal voltmeter should be infinite. The lower resistance of voltmeters gives a reading lower than the actual potential difference across the terminals.

Sporozoites of malarial parasite enter in the human body due to biting of freshly born female Anopheles mosquito, whose mother was a carrier of malarial parasite.. Male and female gametocytes of malarial parasites are formed in the human intestine.

Sinus venosus is a thin-walled sac with little muscular tissue in primitive heart. It receives venous blood through the hepatic veins.

Phenoxide ion on treatment with active alkyl halide (e.g., $CH _{2}= CH - CH _{2} Cl$ ) gives two products viz. $O$-substituted and $C$-substituted. Phenoxide ion is an ambident nucleophile.

: $pH $ of neutral solution is always $7$. : $pH$ of a solution does not depend upon temperature.

: $p$-dichlorobenzene is less soluble in organic solvents than the corresponding $o$-isomer. : $o$-dichlorobenzene is polar while $p$-dichlorobenzene is not

Now-a-days amniocentesis is banned. Amniocentesis gives the information of any abnormality in the foetus and many other complications regarding pregnancy can be detected.

$ NaCl $ is less soluble in heavy water than in ordinary water. Dielectric constant of ordinary water is more than that of heavy water.

$C_{p}$ can be less than $C_{V}$. $C_{p} C_{V}=R$ is valid only for ideal gases.

Magnification of a convex mirror is always positive, but that of a concave mirror may be both positive or negative. It depends on the sign convention chosen.

$KE$ is conserved at every instant of elastic collision. No deformation of matter occurs in elastic collision.

In the transmission of long distance radio signals, short wave band is used. In shorter wavelength, attenuation is very less.

Helium is used in diving apparatus. Solubility of helium is less in blood.

$H_2S$ is less acidic than $H_2$ Te Te has larger radius than S.

Fructose is a reducing sugar. It has a ketonic group.

Blood in cockroach is colourless haemolymph with no respiratory pigment. Respiration in cockroach occurs through diffusion in haemolymph.

: As a lead storage battery gets discharged, density of electrolyte, present in it, decreases. : Lead and lead dioxide both react with sulphuric acid to form lead sulphate.

Algal blooms are formed in nutrientless water. Algal blooms in water turn it unfit for human consumption, but cause enormous growth of fish.