List of top Questions asked in AIIMS- 2007

: $7$-celled, $8$ nucleate and monosporic embryosac is called Polygonum type of embryo sac. : It was discovered by Hofmeister for the first time in Polygonum.

Wings of pigeon, mosquito and bat show

$XeF_6$ on complete hydrolysis produces

Zener diode acts as a/an

Which form of reproduction is correctly matched?

Which among the following is a rootless plant?

What is the dimensions of impedance ?

The phase difference between the instantaneous velocity and acceleration of a particle executing simple harmonic motion is

The element which is the most abundant in the earth crust is

The density of air is $0.001293\, g / cc$ at STP. Its vapour density is

The correct order of ease of dehydration of following is

The correct order of basic strength is

The coordination number in $hcp$ is

Supercritical $CO_{2}$ is used as

Photosynthetic Active Radiation $(PAR)$ has the following range of wavelengths

Mass spectrometric analysis of potassium and argon atoms in a Moon rock sample shows that the ratio of the number of (stable) ${ }^{40} Ar$ atoms present to the number of (radioactive) ${ }^{40} K$ atoms is $10.3$. Assume that all the argon atoms were produced by the decay of potassium atoms, with a half-life of $1.25 \times 10^{9} yr$. How old is the rock?

Litharge is chemically

In the diagram shown below all three rods are of equal length $L$ and equal mass $M$. The system is rotated such that rod $B$ is the axis. What is the moment of inertia of the system?

In the change $ {[Cu(H2O)6]^2+ ->[HCl] }[CuC(H_2O)_5]^+$, the colour changes from

If $ AgI $ crystallizes in zinc blende structure with $I^{-}$ ions at lattice points. What fraction of tetrahedral voids is occupied by $Ag^{+}$ ions?

If a solid sphere of mass $1 \,kg$ and radius $0.1\, m$ rolls without slipping at a uniform velocity of $1\, m/s$ along a straight line on a horizontal floor, the kinetic energy is

Hydrogen can be prepared by the action of dil $H_{2}SO_{4}$ on

Cyanogen gas is obtained in the reaction

Composite fruit develops from

Cellulose, the most important constituent of plant cell wall is made up of