List of top Questions asked in JKCET

Nucleons are a collection of
Two small charged spheres have charges of $ 2 \times 10^{-7}\, C $ and $ 3 \times 10^{-7}C $ . They are placed $ 30\,cm $ apart in air. What is the force between them ?
What is lateral shift with respect to optics ?
Dacron is continuous filament yarn used in curtains, dress fabrics and pressure fire hoses. The reaction for preparing dacron is by the combination of which of the following ?
What will be the correct unit of rate constant $ k $ for a reaction whose order is three ?
The resistance of a conductor does not depend on
If the mains voltage is $ 230\,V $ then the peak voltage approximately is
A system has two charges $ q_A = 2.5 \times 10^{-7}C $ and $ q_B = -2.5 \times 10^{-7}C $ located at points $ A : (0, 0,- 15 \,cm) $ and $ B : (0, 0 + 15 \,cm) $ , respectively. What is the magnitude and direction of electric dipole moment of the system ?
Focal length, radius of curvature and power of a plane mirror respectively are
How many electrons are involved during the oxidation reaction of $ KMnO_4 $ in acidic medium ?
The intrinsic carrier concentration of silicon sample at $ 300\, K $ is $ 1.5 \times 10^{16}\, m^{-3} $ . What is the density of minority carrier ? (after doping, the number of majority carriers is $ 5 \times 10^{20}\, m^{-3} $ )
An athlete runs exactly once around a circular track of length $ 500\,m $ . The runners displacement in the race is
Magnetic energy density in an inductor is given by
What is the reason for earth not moving towards the moon, even though moon attracts the earth ?
The molecule of a monatomic gas has
Order of magnitude of a physical quantity is the
What modulation index and side bands are produced when a message of frequency $ 10 \,kHz $ and peak voltage of $ 10 $ volts is used to modulate a carrier frequency of $ 1 \,MHz $ and peak voltage of 20 volts ?
The resistance of the platinum wire of a platinum resistance thermometer at the ice point is $ 5\,\Omega $ and at steam point is $ 5.23\,\Omega $ . When the thermometer is inserted in a hot bath, the resistance of the platinum wire will be $ 5.795\,\Omega $ . Calculate the temperature of the bath.
Calculate the molarity of a solution of $ 30\,g $ of $ Co(NO_3)_2.6H_2O $ in $ 4.3\, L $ of solution ? Consider atomic mass of $ Co = 59\, u $ , $ N = 14\, u $ , $ O = 16\,u $ , $ H = 1\,u $
The device or substances which do not obey Ohm?s law is/are
What is the hybridization and geometry of the compound $ XeOF_4 $ ?
What will be the $ E_{cell} $ for the given cell ? $ Zn\left|Zn^{2+}\left(0.1\,M\right)\right|\left|Cu^{2+}\left(0.01\,M\right)\right|Cu $ Given : $ E^{\circ}_{Zn^{2+}Zn}=0.76\,V $ and $ E^{\circ}_{Cu^{2+}Cu}=0.34\,V $ . Also predict whether the reaction is spontaneous or non-spontaneous.
For a copper block, find the electric field which can give on an average $ 1 \,eV $ energy to a conduction electron. (The mean free path of conduction electrons in copper is given as $ 4 \times 10^{-8}\, m $ )
The minimum negative potential given to anode plate at which photoelectric current becomes zero is called
Identify the correct increasing order of crystal field stabilization energy value for the given complexes.