List of top Questions asked in JKCET

Which of the following is an ore of zinc?
Select the molecule which has only one $ \pi - $ bond
Two identical capacitors are first connected in series and then in parallel. The ratio of equivalent capacitance is
The conservation of angular momentum demands that
The Brewster's law is given by the expression
The position vector of a point $R$ which divides the line joining $ P(6,\,3,-2) $ and $ Q(3,1,-4) $ Q(3,1, - 4) in the ratio $ 2:1 $ externally is
A long straight wire is carrying a current of $ 12\,A $. The magnetic field at a distance of $ 8\,cm$ is $ (\mu _{0}=4\pi \times 10^{-7}\,N/A^{2}) $
The centripetal force is given by the expression
Which of the following physical quantity unit is not a fundamental unit?
The net electric force on a charge of $ +3\,\mu C $ at the mid-point on the line joining two charges of magnitude $ +2\,\mu C $ and $ -2\,\mu C $ separated by the distance of $6\,mm, $ is
Five persons entered the lift cabin on the ground floor of an eight floor house. Suppose that each of them independently and with equal probability can leave the cabin at any floor beginning with the first, then the probability of all $5$ persons leaving at different floors is
An electric charge does not have which of hte following properties?
$C _{6} H _{5} COCl \xrightarrow{ NH _{3}} X \xrightarrow{ P _{2} O _{5}} Y \xrightarrow [H_2]{ Ni }Z$ The end product in the above sequence of reaction is
Which component of electromagnetic spectrum have maximum wavelength?
The value of acceleration due to gravity at the surface of earth
According to Bohr model of hydrogen atom, only those orbits are permissible which satisfy the condition
Identify $Z$ in the following sequence $CH _{3} CH _{2} I \xrightarrow{ KCN } X \xrightarrow{ H _{3} O ^{+} / H _{2} O } Y \xrightarrow[\Delta]{H_3O^+/H_2O}Z$
If two slits in Young's experiment are $ 0.4\,mm $ apart and fringe width on a screen $ 200\,cm $ away is $ 2\,mm $ the wavelength of light illuminating the slits is
The velocity-time graph of particle comes out to be a non-linear curve. The motion is
$24$ cells of emf $ 1.5\,V $ each having internal resistance of $1$ ohm are connected to an external resistance of $ 1.5$ ohms . To get maximum current
In which of the following reactions, increase in pressure will favour the forward reaction?
Which of the following is a Lewis acid?
The solubility of $Fe ( OH )_{3}$ is $x\, mol\, L ^{-1}$. Its $K_{s p}$ would be
The $[ OH ]^{-}$in a solution is $1\, mol\, L ^{-1}$. The $pH$ of the solution is
Newton's second law of motion is