List of top Questions asked in JKCET

Consider a thin spherical shell of radius $R$ consisting of uniform surface charge density $\sigma$ The electric field at a point of distance $x$ from its centre and outside the shell is

The work done in bringing at a unit positive charge from infinity distance to a point at distance $x$ from a positive charge $Q$ is $W$. Then the potential $ \phi $ at that point is

The latent heat of fusion of ice at $0^{\circ} C$ is $80\, cal / g$. Entropy change $(\Delta S)$ accompanying the melting of $1\, g$ of ice at $0^{\circ} C$ would be (units: $cal / g / K$ )

When a $p-n$ junction diode is connected in forward bias its barrier potential

The frequency of the fundamental note in a wire stretched under tension $T$ is $f$. If the tension is increased to $25 \,T$, then the frequency of the fundamental note will be

Wien 's displacement law for emission of radiation can be written as $(\lambda_{max}$ = wavelength whose energy density is greatest)

Kirchhoff's second law for the analysis of circuit is based on

A body moving along a circular path of radius $R$ with velocity $v$, has centripetal acceleration a. If its velocity is made equal to $2v$, then its centripetal acceleration is

The capacitance $C$ of a capacitor is

$Di$-chloroacetic acid is a stronger acid than acetic acid. This is due to occurrence of

Electron density in the $y z$-plane of $3 d_{x^{2}-y^{2}}$ orbital is

Which of the following alkenes gives only acetaldehyde on ozonolysis?

The dipole moment of a dipole in an uniform external field $ \vec{E} $ is $ \vec{P} $ . Then, the torque $ (\tau ) $ acting on the dipole is

What happens to the yield on application of high pressure in the Habefs synthesis of ammonia?

The depletion layer in a silicon diode is $ 1\,\mu m $ wide and its knee potential is $0.6\,V$, then the electric field in the depletion layer will be

Dehydration of alcohol is an example of which type of reaction?

Which one of the following mono-enes does not exhibit geometric isomerism?

An intrinsic semiconductor at $0\,K$ temperature behaves like

The element with the lowest ionization potential is

Hydroxamic acid test is employed to detect

The moment of inertia of a circular ring of mass $1\,kg $ about an axis passing through its centre and perpendicular to its plane is $4\, kg-m^{2}$ . The diameter of the ring is

If $g$ is the acceleration due to gravity on the surface of earth, its value at a height equal to double the radius of earth is

During a redox titration involving a solution containing $Fe ^{2+}$ ions against $MnO _{4}^{-}$in the presence of excess of $H ^{+}$ions, the number of electrons that gets transferred is.

The de-Broglie wavelength associated with a particle moving with momentum $(p)$ and mass $(m)$ is

Conversion of chlorobenzene to phenol involves