List of top Questions asked in AIIMS- 2009

A compound with delocalised electrons is more stable than that compound would be if all its electrons were localised. The extra stability, a compound gains as a result of having delocalised electrons, is called delocalisation energy.

$1.575\, g\, H _{2} C _{2} O _{4} \cdot 2 H _{2} O$ in $250 \,mL$ solution makes it $0.1 \,N$. $H _{2} C _{2} O _{4} \cdot 2 H _{2} O$ is a dihydrate organic acid.

A wire of length $l$ and mass m is bent in the form of a semicircle. The gravitational field intensity at the centre of semicircle is

A short linear object, of length $l$, lies along the axis of a concave mirror, of focal length $f$, at a distance $d$ from the pole of the mirror. The size of the image is then (nearly)

Which of the following coordination entities should be expected to absorb light of lowest frequency?

A convex lens of refractive index $\frac{3}{2}$ has a power of $2.5\, D$ in air. If it is placed in a liquid of refractive index $2$, then the new power of the lens is

An alternating current $i$ in an inductance coil varies with time according to the graph given below. Which one of the following graphs gives the variation of voltage with time?

Seven resistances are connected as shown in the given figure. The equivalent resistance between $A$ and $B$ is

The curve drawn between velocity and frequency of photon in vacuum will be a

A monkey of mass $m$ kg slides down a light rope attached to a fixed spring balance, with an acceleration $a$. The reading of the balance is $w kg [g=$ acceleration due to gravity $]$

A bar of magnetic substance is placed in a magnetic field with its length making an angle of $30^{\circ}$ with the direction of the magnetic field. How will the bar behave?

Let $K_{1}$ be the maximum kinetic energy of photoelectrons emitted by light of wavelength $\lambda_{1}$ and $K_{2}$ corresponding to wavelength $\lambda_{2}$. If $\lambda_{1}=2 \lambda_{2}$, then

For which of the following pairs, magnetic moment is same?

Select the incorrect statement, among the following.

Which of the following azeotropic solutions has the boiling point less than boiling point of the constituents $A$ and $B$?

A sample of $0.42 \,mg \,{ }^{233} UF _{6}$ shows an activity of $9.88 \times 10^{4}$ count per second. Its $t_{1 / 2}$ is

The correct set of reagents for the following conversion is

Sodium crystallizes in bcc arrangement with the interfacial separation between the atoms at the edge $53\, pm$. The density of the solid is

Which of the following coordination entities should be expected to absorb light of lowest frequency?

The increasing order of hydrolysis of the following compounds is

The rubber, used for manufacturing tyres is vulcanised with