List of practice Questions

One kilowatt hour is equal to
The current in the following circuit is
The position x of a particle varies with time, (t) as $x = at^2 - bt^3.$ The acceleration will be zero at time t is equal to
How many mitotic divisions are needed for a single cell to make 128 cells?
Due to earth's magnetic field, the charged cosmic rays particles
Calcium is obtained by the
A couple produces
Equivalent conductance of $ NaCl, HCl$ and $C_2H_5COONa $ at infinete dilution are $126.45, 426.16$ and $91 \Omega ^{-1} cm^2 $ , respectively. The equivalent conductance of $C_2H_5COOH $ is
A (100 W, 200 V) bulb is connected to a 160 volts supply. The power consumption would be
Enzymes, in the living systems
A basic lining is given to a furnace by using
Which one of the following has the highest dipole moment?
In graphite, electrons are
Colour of light having maximum speed in air is
Two resistances $R_1$ and $R_2$ have effective resistance $R_s$ when connected in series and $R_p$, when connected in parallel. If $R_s R_p=16$ and $R_1/R_2=4$, calculate the values of $R_1$and $R_2$ (in units of resistance).
If $ {\varepsilon}_0 $ and $ {\mu}_0 $ are the electric permittivity and magnetic permeability in a free space, $ \varepsilon $ and $\mu $ are the corresponding quantities in medium, the index and refraction of the medium is
The process of zone refining is used in purification of
Ebonite is
Which of the following is an unsaturated acid ?
A point source of light produces an illumination $I$ at a point. When the distance between them is made four times its original value, the intensity at that point becomes
Calculate the current I in the circuit shown
The total number of orbitals in a shell can be given in the form of $n$. The principal quantum number is
Which one of the following is the strongest acid?
A dark pattern on a China dish appears brighter than the rest of the dish, when it is strongly heated and taken to a dark room. This is an illustration of
Evolutionary convergence is characterised by