List of top Questions asked in KCET, JIPMER

For a 1st order reaction the unit of rate constant is
Inversion of cane sugar by acid hydrolysis in excess of water is
Two pith balls, each of mass 1.8 g are suspended from the same point by silk threads each of length 20 cm. When equal charge $Q$ is given to both the balls, they separate until the two threads become perpendicular. Then the charge $Q$ on each pith ball is $\left[\frac{1}{4\pi \varepsilon_0 }=9 \times10^{9} N m^{2} C^{-2}\right]$
A charge $Q$ is to be divided into two parts : $q$ and $Q - q$. What is the relation between $q$ and $Q$ if the two parts, when placed apart, has maximum coloumb repulsion
Three concentric metallic spherical shells of radii $R, 2R$ and $3R$ are given charges $Q_1, Q_2, Q_3$ respectively. It is found that the surface charge densities on the outer surface of the shells are equal. Then the ratio of the charges given to the shells $Q_1 : Q_2 : Q_3$ is
A charge $+q$ is placed at origin. There are two concentric spherical surfaces; $S_1$ of radius $R$ and $S_2$ of radius $2R$. Both the surfaces have their centres at the origin. Let $\phi_1$ denote the flux through $S_1$ and $\phi_2$ the flux through $S_2$. The relation between $\phi_1$ and $\phi_2$ is
The increasing order of bond order of $O_2, O_2^+ , O_2^-$ and $O_2^{-}$ is
An electron initially at rest, is accelerated through a potential difference of 200 volt, so that it acquires a velocity ${8.4 \times 10^6 m s^{-1}}$, the value of $e/m$ of electron will be
${ 2HI <=> H_2 + I_2 . K_p}$ is
The process of superimposing message signal on high frequency carrier wave is called
When a solution of ${CuSO_4}$ is electrolysed for 15 minutes with a current of 1 amp, then the mass of Cu deposited at the cathode will be
A long solenoid with $40$ turns per cm carries a current of $1\,A$. The magnetic energy stored per unit volume is ........ $J/ m^3$.
A gas under constant pressure of $ 45 \times 10^5\, p_a $ when subjected to $ 800 \,k j $ of heat, changes the volume from $ 0.5\, m^3 $ to $ 2.0\, m^3 $ . The change in internal energy of the gas is
Thermal decomposition of sodium azide gives
The $rms$ value of current in a $50 \,Hz$ $AC$ circuit is $6\,A$. The average value of $AC$ current over a cycle is
The relative ease of dehydration of alcohol is
The reagents used in Clemmensen reduction of aldehyde is/are
The geometry of complex ion $[ {Fe(CN)_6}]^{4-}$ is
Ozone layer block the radiation of wavelength
Origin of first toothed birds and dominance of gymnosperms took place during
Maltose on hydrolysis gives
Oxidative decarboxylation occurs during the formation of
The contribution of particle at the edge centre to a particular unit cell is.
Predict the product $C$ in the following series of reactions : $CH _{3}- COOH \stackrel{ PCl _{ 5 }}{\longrightarrow} A { ->[{C_6H_6}][{{\text{Anhyd}} . Alcl_3}] } B { ->[CH_3MgBr] C}$
Which of the following is a highly corrosive salt?