List of practice Questions

Two capacitors of $10\, PF$ and $20\, PF$ are connected to $200 \,V$ and $100\, V$ sources respectively. If they are connected by the wire, what is the common potential of the capacitors ?
Two amplifiers are connected one after the other in series (cascaded). The first amplifier has a voltage gain of $10$ and the second has a voltage gain of $20$. If the input signal is $0.01\, volt$, what is the output $ac$ signal ?
Tubectomy is a method of sterilization in which
Transfer of pollen grains from the anther to the stigma of another flower of the different plant is known as
To produce one molecule of glucose Calvin cycle turns
Three charges $-q, +Q$ and $-q$ are placed at equal distances along a straight line. If the total $P.E.$ of the system is zero, the ratio $ \frac{Q}{q} $ becomes
Three charged particles are collinear and are in equilibrium, then
The term biomagnification refers to
The $t_{\frac{1}{2}}$ for a zero order reaction at the initial concentration of 6x 10M is one minute at $27^{\circ}C$. The rate constant at $27^{\circ}C$ in mol $dm^{-3}s^{-1}$ is
The sound producing organ of bird is called as
The solid linear cytoskeletal elements having a diameter of 6 nm and made up of a single type of monomer are known as
The roots hanging from the branches of banyan tree are
The release of sperms from the seminiferous tubules is called
The radiation corresponding to $3\rightarrow2$ transition of hydrogen atom falls on a metal surface to produce photoelectrons. These electrons are made to enter a magnetic field of $3\times10^{-4}$T. If the radius of the largest circular path followed by these electrons is 10.0 mm, the work function of the metal is close to
The process of converting hydrated alumina into anhydrous alumina is called
The period number in the long form of the periodic table is equal to
The oscillation of a body on a smooth horizontal surface is represented by the equation, $ X = A \cos \, ( \omega \, t)$ where X = displacement at time t $ \omega$ = frequency of oscillation Which one of the following graphs shows correctly the variation a with $t$ ?
The middle lamella is composed of
The $KE$ of the electron in an orbit of radius $r$ in hydrogen atom is ($e$ = electronic charge)
The initial step in the digestion of milk in humans is carried out by ?
The formula of azurite is
The force between two parallel current carrying wires is independent of
The first recombinant DNA was constructed by linking an antibiotic resistant gene with the native plasmid of
The first human hormone produced by recombinant DNA technology is
The enzyme recombinase is required at which stage of meiosis?