List of top Questions asked in JIPMER- 2009

In plants, water supply is due to

Which of the following is correct?

In a mass spectrometer used for measuring the masses of ions, the ions are initially accelerated by an electric potential $V$ and then made to describe semicircular paths of radius $R$ using a magnetic field $B$. If $V$ and $B$ are kept constant, the ratio $\left(\frac{\text { charge on the ion }}{\text { mass of the ion }}\right)$ will be proportional to

Two radioactive substances $A$ and $B$ have decay constants $5\, \lambda$ and $\lambda$ respectively. At $t=0$ they have the same number of nuclei. The ratio of number of nuclei of $A$ to those of $B$ will be $\left(\frac{1}{e}\right)^{2}$ after a time interval

A block $B$ is pushed momentarily along a horizontal surface with an initial velocity $v$ . If $\mu$ is the coefficient of sliding friction between $B$ and the surface, block $B$ will come to rest after a time

The frequency of a light wave in a material is $2 \times 10^{14} Hz$ and wavelength is $5000\, ?$. The refractive index of material will be

In an oxidation-reduction reaction, $MnO _{4}^{-}$ion is converted to $Mn ^{2+}$. What is the number of equivalents of $KMnO _{4}$ (mol. wt. $=158$ ) present in $250\, mL$ of $0.04\, M\, KMnO _{4}$ solution ?

DNA multiplication is called

Three resistances $P, Q, R$ each of $2\, \Omega$ and an unknown resistance $S$ form the four arms of a Wheatstone's bridge circuit. When a resistance of $6\, \Omega$ is connected in parallel to $S$ the bridge gets balanced. What is the value of $S$ ?

If energy E, velocity v and time T are taken as fundamental quantities, the dimensional formula for surface tension is

A charged particle (charge $q$ ) is moving in a circle of radius $R$ with uniform speed $v$. The associated magnetic moment $\mu$ is given by

A galvanometer having a coil resistance of $ 60O $ shows full scale deflection when a current of 1.0 A passes through it. It can be converted unto an ammeter to read currents upto 5.0 A by

A steady current of $1.5\, A$ flows through a copper voltameter for 10 min. If the electrochemical equivalent of copper is $30 \times 10^{-5}\, g\, C ^{-1}$, the mass of copper deposited on the electrode will be

A particle executes simple harmonic oscillation with an amplitude $a$. The period of oscillation is $T$ . The minimum time taken by the particle to travel half of the amplitude from the equilibrium position is

Two spherical conductors $B$ and $C$ having equal radii and carrying equal charges in them repel each other with a force $F$ when kept apart at some distance. A third spherical conductor having same radius as that of $B$ but uncharged, is brought in contact with $B$, then brought in contact with $C$ and finally removed away from both. The new force of repulsion between $B$ and $C$ is

$9.2 g N _{2} O _{4}$ is heated in a $1 L$ vessel till equilibrium state is established $N _{2} O _{4}(g) \rightleftharpoons 2 NO _{2}(g)$ In equilibrium state $50 \% N _{2} O _{4}$ was dissociated, equilibrium constant will be (mol. wt. of $N _{2} O _{4}=92$ )

What is the equation for the equilibrium constant $ (K_{c})$ for the following reaction? $\frac{1}{2}A(g) + \frac{1}{3}B(g){ <=>[T(K)]} \frac{2}{3}C(g)$

During inspiration, the diaphragm

The homologue of ethyne is

Streptomycin is obtained from

Rh factor is present in

Most accepted theory for ascent of sap is

Malpighian tubules are

Jumping genes in maize were discovered by

Which of the following reagents converts both acetaldehyde and acetone to alkanes?