List of practice Questions

Electrolytic reduction of nitrobenzene weakly acidic medium gives:
A coil in the shape of an equilateral triangle of side l is suspended between the pole pieces of a permanent magnet such that $\vec{B}$ is in plane of the coil. If due to a current i in the triangle a torque $ \tau $ acts on it, the side l of the triangle is
A force $F$ acting on an object varies with distance $x$ as shown in the figure. The force is in $N$ and $x$ in $m$. The work done by the force in moving the obiect from $x=0$ to $x = 6 \,m$ is
In any fission process the ratio (mass of fission products/mass of parent nucleus) is :
Which one of the following depresses brain activity and produces feelings of calmness, relaxation and drowsiness.
AIDS is caused by HIV that principally infects:
In a p-n junction photo cell, the value of the photo-electromotive force produced by monochromatic light is proportional to
G-6-P dehydrogenase deficiency is associated with haemolysis of
Which one of the following forms micelles in aqueous solution above certain concentration?
A particle describes a horizontal circle in a conical funnel whose inner surface is smooth with speed of $ 0.5\,m/s $ . What is the height of the plane of circle from vertex of the funnel?
$ 2\,g $ of water condenses when passed through $ 40\,g $ of water initially at $ 25^{\circ}C $ . The- condensation of steam raises the temperature of water to $ 54.3^{\circ}C $ . What is the latent heat of steam?
The spectral energy distribution of a star is maximum at twice temperature as that of sun. The total energy radiated by star is
The most biodiversity rich zone in India
Which one of the following phenomena supports Darwin's concept of natural selection in organic evolution ?
The matrix [5103−2−46−1−2b]is a singular matrix, if b equals
In Young's double slit experiment intensity at a point is (1/4) of the maximum intensity. Angular position of this point is
Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by
For the reaction $N_{2(s)}+O_{2(s)} \rightleftharpoons 2 N O_{(g)}$, the value of $K_{c}$ at $800^{\circ} C$ is $0.1 .$ When the equilibrium concentrations of both the reactants is $0.5 \,mol$, what is the value of $K_{P}$ at the same temperature?
A micro-organism, when viewed under a compound microscope with an objective lens of 40 X and an eye piece of 10 X magnification measured 4000 � in length. The same microorganism when observed under a dissection microscope with a lens of 10 X magnification, would measure........
A nucleosome is a portion of the chromonema containing_______
If $M$ is the mass of the earth and $R$ its radius, the ratio of the gravitational acceleration and the gravitational constant is :
A commercial sample of hydrogen peroxide is labelled as 10 volume. Its percentage strength is nearly
A precipitate of $AgCl$ is formed when equal volumes of the following are mixed. $[K_S\, for\, AgCl = 10^{-10}]$
From the adjacent figure, the correct observation is
Which one of the following is an inner orbital complex as well as diamagnetic in behaviour? (At. no. of Zn = 30, Cr = 24, Co = 27, Ni = 28)