List of practice Questions

The value of alternating emf $E$ in the given circuit will be
When compared to $\Delta G^\circ$ for the formation of $Al_2O_3$, the $\Delta G^\circ$ for the formation of $Cr_2O_3$ is
Mass of $0.1\, mole$ of methane is
The angle strain in cyclobutane is
On bombarding $U^{235}$ by slow neutron, $200\, MeV$ energy is released. If the power output of atomic reactor is $1.6\, MW$, then the rate of fission will be
The equation of a simple harmonic wave is given by $y = 6\, Sin\, 2\pi(2t - 0.1x)$, where $x$ and $y$ are in $mm$ and $t$ is in seconds. The phase difference between two particles $2\, mm$ apart at any instant is
A particle located at x = 0 at time t - 0, starts moving along the positive x-direction with a velocity 'V' that varies as $v=\alpha\sqrt{x.}$ The displacement of the particle varies with time as:
Which type of white blood cells are concerned with the release of histamine and the natural anticoagulant heparin ?
Trichoderma harzianum has proved to be a useful microorganism for
Which one of the following is incorrect about the characteristics of protobionts (coacervates and microspheres) as envisaged in the abiogenic origin of life?
Which among the following factors is the most important in making fluorine the strongest oxidising agent?
Which one of the following ions has the highest value of ionic radius ?
Which of the following genes shows the heterozygous condition ?
Which one of the following is not a characteristic of phylum Annelida?
Ascaris is characterized by
A bomb of mass 16 kg at rest explodes into two pieces of masses 4 kg and 12 kg. The velocity of the 12 kg mass is 4 $ms^{-1}.$The kinetic energy of the other mass is:
A body is thrown vertically up with certain initial velocity. The potential and kinetic energies of the body are equal at a point P in its path. If the same body is thrown with double the velocity upwards, the ratio of potential and kinetic energies of the body when it crosses the same point, is
A table tennis ball which has been covered with a conducting paint is suspended by a silk thread so that it hangs between two metal plates. One plate is earthed. When the other plate is connected to a high voltage generator, the ball
Millikan's oil-drop experiment established that
The ground state energy of hydrogen atom is -13.6 eV. When its electron is in the first excited state, its excitation energy is
Two nuclei have their mass numbers in the ratio of $ 1:3 $ . The ratio of their nuclear densities would be
The radius of curvature of the convex face of a planoconvex lens is $ 15 \,cm $ and the refractive index of the material is $ 1.4 $ . Then the power of the lens in dioptre is
The basic principle of Cottnell's precipitator is
Among the following, which is least acidic ?
The moment of inertia of a thin circular disc about an axis passing through its center and perpendicular to its plane is $1$. Then, the moment of inertia of the disc about an axis parallel to its diameter and touching the edge of the rim is