List of practice Questions

A hemispherical bowl of radius $r$ is set rotating about its axis of symmetry in vertical. A small block kept in the bowl rotates with the bowl without slipping on its surface. If the surface of the bowl is smooth and the angle made by the radius through the block with the vertical is $\theta$, then find the angular speed at which the ball is rotating.
A geostationary satellite has an orbital period of
If $Cu^{2+}$ ions is treated with excess of $KCN$, the complex formed is
The radius of a spherical nucleus as measured by electron scattering is $3.6 \,fm$. What is the likely mass number of the nucleus?
A particle is projected at $60^{\circ}$ to the horizontal with a kinetic energy $K$. The kinetic energy at the highest point is
The correct graph representing the variation of total energy $(E_T)$, kinetic energy $(E_K)$ and potential energy $(E_p)$ of a satellite with its distance $(r)$ from the centre of earth is
Which of the following do not have tetrahedral geometry?
Property of the alkaline earth metals that increases with their atomic number is
Molar heat of vaporisation of a liquid is $6 \,kJ\, mol^{-1}$. If the entropy change is $16 \,J \,mol^{-1}\, K^{-1}$, the boiling point of the liquid is
A compound $A$ has a molecular formula $C_2Cl_3OH$. It reduces Fehling's solution and on oxidation, gives a monocarboxylic acid $B$. $A$ can be obtained by the action of chlorine on ethyl alcohol. $A$ is
What is true of urea biosynthesis?
Choose the correct statement.
Which of the following statement is true?
If a biochemical analysis of mitochondria has to be done, the best procedure would be
The small projections present on the surface of pineapple fruit represent
Pith cavity occurs in the stem of
Pollination in Rafflesia is occurred by
Which one of the following is referred as 'living fossils'?
A colour blind man marry with a daughter of colour blind father, the generation will be
The moment of inertia of a disc of mass $M$ and radius $R$ about an axis, which is tangential to the circumference of the disc and parallel to its diameter is
Select the animal that exhibits retrogressive metamorphosis.
In terms of basic units of mass $(M)$, length $(L)$, time $(T) $ and charge $(Q)$, the dimensions of magnetic permeability of vacuum $(\mu_0)$ would be
Two spherical nuclei have mass numbers $216$ and $64$ with their radii $R_{1}$ and $R_{2}$ respectively. The ratio, $\frac{R_{1}}{R_{2}}$ is equal to
A massless rod $S$ having length $2 l$ has equal point masses attached to its two ends as shown in figure. The rod is rotating about an axis passing through its centre and making angle $\alpha$ with the axis. The magnitude of change of momentum of rod i.e. $\left|\frac{d L}{d t}\right|$ equals
A semiconductor having electron and hole mobilities $\mu_{n}$ and $\mu_{p}$ respectively. if its intrinsic carrier density is $n_{i}$, then what will be the value of hole concentration $P$ for which the conductivity will be minimum at a given temperature?