List of top Questions asked in AIIMS- 2006

Avena curvature test is a bioassay for examining the activity of

Water in liquid state is more stable than ice at room temperature. Water in liquid form has higher entropy than ice.

In the iodometric titration starch is used as an indicator. Starch is a polysaccharide.

In optical fibre, the diameter of the core is kept small. This smaller diameter of the core ensures that the fibre should have incident angle more than the critical angle required for total internal reflection.

In angiosperms the conduction of water is more efficient because their xylem has vessels. Conduction of water by vessel elements is an active process with energy supplied by xylem parenchyma rich in mitochondria.

Graphite is an example of tetragonal crystal system. For a tetragonal system, $a=b \neq c, \alpha=\beta$ $=90^{\circ}, \gamma=120^{\circ}$

Cobalt-$60$ is useful in cancer therapy Cobalt-$60$ is a source of $\gamma$-radiations capable of killing cancerous cells.

A thin stainless steel needle can lay floating on a still water surface. Any object floats when the buoyancy force balances the weight of the object.

Among the following L-serine is

In refraction, light waves are bent on passing from one medium to the second medium, because, in the second medium:

A wire mesh consisting of very small squares is viewed at a distance of $8 \,cm$ through a magnifying converging lens of focal length $10\, cm$, kept close to the eye. The magnification produced by the lens is

A lens is made of flint glass (refractive index $=1.5$ ). When the lens is immersed in a liquid of refractive index $1.25$, the focal length :

All mammals without any exception are characterised by

Which one of the following pairs of the kind of cells and their secretion is correctly matched ?

Genes present in the cytoplasm of eukaryotic cells are found in

A person showing unpredictable moods, outbursts of emotions, quarrelsome behaviour and conflicts with others is suffering from-

Grafting is successful in dicots but not in monocots because the dicots have

In the sieve elements, which one of the following is the most likely function of P-proteins ?

In prokaryotes, chromatophores are

A cricket player is fast chasing a ball in the field. Which one of the following groups of bones are directly contributing in this movement ?

A judo fighter in order to throw his opponent on to the mat tries to initially bend his opponent and then rotate him around his hip. As the mass of opponent is brought closer to the fighter?s hip, the force required to throw the opponent is reduced.

If a street light of mass $M$ is suspended from the end of a uniform rod of length $L$ in different possible patterns as shown in figure, then :

${ }_{92}^{238} U$ has $92$ protons and $238$ nucleons. It decays by emitting an alpha particle and becomes:

An amplifier has a voltage gain $A_{v}=1000$. The voltage gain in $dB$ is :

When a $p-n$ junction diode is reverse biased, then