List of top Questions asked in AIIMS

Oxidation of glucose by $Br_2$-water gives saccharic acid. $Br_2$-water oxidises ??HO and ??H group.
On passing electric current in colloidal solution they do not move towards anode or cathode. They do not contain any charge.
Net primary productivity is gross primary productivity minus respiration. Secondary productivity is produced by heterotrophs.
Metal deficiency defect can be seen in $FeO$. $Li$ compound (LiCl) has pink colour due to F-center.
Gallium arsenide phosphide is used for making LED. Valance band overlaps with conduction band in case of semionductor.
For angular projection, when angle of projection ? = tan (1), the horizontal range is four times the maximum height. The horizontal range of projectile is directly proportional to square of velocity and inversely proportional to acceleration due to gravity.
Due to Frenkel defect, there is no effect on the density of the crystalline solid. In Frenkel defect, no cation or anion leaves the crystal.
Colpa aurea is a specialised pollinating agent of orchid Ophrys speculum. Male Colpa mistakes the Ophrys flower for female wasp to copulate with it.
Auerbach?? plexus controls the secretion of intestinal juice. Meissner?? plexus controls the peristalsis in alimentary canal.
Appetency is the formation of new structure or habit of the organism according to its need. Appetency is also called doctrine of desire.
$Al$ forms $[AlF_6]^{3-}$ but B does not form $[BF_6]^{3-}$. $B$ does not react with $F_2$.
Agrobacterium tumefaciens is popular in genetic engineering because this bacterium is associated with the roots of all cereal and pulse crops. A gene incorporated in the bacterial mesosome gets automatically transferred to the crop with which the bacterium is associated.
AIDS and hepatitis B are sexually transmitted diseases. There is no permanent cure for both of them.
A rocket works on the principle of conservation of linear momentum. Higher the velocity, smaller is the pressure and vice-versa.
A geneticist crossed two plants and got 50% tall and 50% dwarf progenies. This cross follows Mendelian law as one of the parent plant might be heterozygous.
Contraction of the cremaster muscle occurs because of
A patient of diabetes mellitus excretes glucose in urine even when he is kept on a carbohydrate free diet. It is because
Photorespiration is found in all plants. In C plants, first CO fixation product is formed in bundle sheath cells.
According to the accepted concept of hormone action, if receptor molecules are removed from target organs, then the target organ will
Albuminous seeds are found in
Petroplants produce large amount of latex. The latex contains long chain hydrocarbons.
Phenylpyruvic acid is excreted through urine in case of phenylketonuria. The affected individual lacks enzyme phenylalanine hydroxylase.
A boy stands on a weighing machine inside a lift. When the lift is going down with acceleration $g/4$, the machine shows a reading $30 \,kgf$. When the lift goes upwards with acceleration $g/4$, the reading would be
A body starts from rest and travels a distance S with uniform acceleration, then moves uniformly a distance 2S and finally comes to rest after moving further 5S under uniform retardation. The ratio of the average velocity to maximum velocity is
The Young's modulus of a rope of $ 10\,m$ length and having diameter of $2\,cm$ is $ 200\times 10^{11}\,dyne/cm^{2}$ . If the elongation produced in the rope is $ 1\,cm, $ the force applied on the rope is