List of top Questions asked in JCECE

The two capacitors $ {{\text{C}}_{\text{1}}} $ and $ {{\text{C}}_{\text{2}}} $ are charged to potentials $ {{\text{V}}_{1}} $ and $ {{\text{V}}_{2}} $ and then connected in parallel. There will be no flow of energy, if:

What is equivalent capacitance of the network? Each capacitor has $ \text{1}\,\text{ }\!\!\mu\!\!\text{ F} $ capacitance:

If a body moves for 2 s with 15 m/s velocity towards east and then moves with 5 m/s velocity for 8 s towards north, then average velocity is :

The work done by the centripetal force F when the body completes one rotation around the circle of radius R is:

Work done in rotating a bar magnet from 0 to angle $ \text{ }\!\!\theta\!\!\text{ } $ is:

Which of the following produces $ \text{C}{{\text{l}}_{2}} $ gas?

When sodium nitrate is heated above $ \text{600}{{\,}^{\text{o}}}\text{C,} $ then:

Lowest melting point chloride is:

In $ \text{S}{{\text{O}}_{\text{2}}} $ hybridisation is:

$ \text{C}{{\text{H}}_{\text{3}}}\text{COCl} $ does not react with:

$CH_3COCl$ does not react with

Which is extremely stable?

In $LCR$ circuit $ {f = \frac{ 50 }{ \pi} \, Hz, V = 50 \, volt, R = 300 \, \Omega}$ . If $L = 1 \, H$ and $C = 20 \, \mu \, C$, then voltage across capacitor is

Which one has highest binding energy per nucleon?

A block of mass $10\, kg$ is placed on rough horizontal surface whose coefficient of friction is $0.5$. If a horizontal force of $100 \,N$ is applied on it, then acceleration of the block will be :-

A person sees clearly at a distance of 100 cm, then power of lens used to see object at 40 cm is

Which is not the unit of electric field?

Huygens wave theory cant explain:

Quantum nature can prove :

An automobile travelling at 50 km/h, can be stopped at a distance of 40 m by applying brakes. If the same automobile is travelling at 90 km/h, all other conditions remaining same and assuming no skidding, the minimum stopping distance in metres is:

If a transformer of an audio amplifier has output impedance 8000 0 and the speaker has input impedance of 80, the primary and secondary turns of this transformer connected

A rifle shoots a bullet with a muzzle velocity of $ 500\,m{{s}^{-1}} $ at a small target 50 m away. To hit the target the rifle must be aimed: (Take $ g=10\,m{{s}^{-2}} $ )

What is potential of platinum wire dipped into a solution of 0.1 M in $ S{{n}^{2+}} $ and 0.01 M in $ S{{n}^{4+}}? $

A stationary body of mass m explodes into the three parts having masses in the ratio 1:3:3. The two fractions with equal masses move at right angles to each other with a velocity of $ 1.5\,m{{s}^{-1}}. $ The velocity of the third part is:

A particle moves along Y-axis in such a way that its $ y- $ coordinate varies with time $ t $ according to the relation $ y=3+5t+7{{t}^{2}}. $ The initial velocity and acceleration of the particle are respectively: