List of top Questions asked in AIIMS- 2018

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
Phenylpyruvic acid is excreted through urine in case of phenylketonuria. The affected individual lacks enzyme phenylalanine hydroxylase.
Petroplants produce large amount of latex. The latex contains long chain hydrocarbons.
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
A body of mass $m_{1}$ collides elastically with another body of mass $m_{2}$ at rest. If the velocity of $m_{1}$ after collision becomes $ 2/3 $ times its initial velocity, the ratio of their masses, is
For a projectile the time of flight of a body becomes n times the original value if its speed is made n times. This is due to the range of the projectile which becomes n times.
Which of the following belongs to Class Osteichthyes?
The final product of the given reaction is
Which of the following order is correct?
Which of the following exhibits minimum number of oxidation states?