List of top Questions asked in UP JEE Polytechnic

A stone is gently dropped from a height of 20 m. If its velocity increases uniformly at the rate of \( 10 \, \text{m/s}^2 \), with what velocity and after what time will it strike the ground?
In a simple pendulum experiment, a student calculates the value of \( g = 9.92 \, \text{m/s}^2 \), but the standard value of \( g \) is \( 9.80 \, \text{m/s}^2 \). Then the percentage error in the calculation of \( g \) is:
A car of mass 2000 kg is moving with a velocity of 18 km/h. Work done to stop this car is:
Which contain maximum number of molecules?
A person travels towards North by 4 m and then turns to West and travels by 3 m. The distance and displacements from initial point are
Two equal forces of 300 Newton each acting at an angle of 60°, the resultant will be
Water falls from 100 metre height. What will be temperature rise per kg of water due to fall?
\(g = 10 \, \text{m/s}^2\), specific heat of water = 4200 Joule/kg°C
Least count of vernier calipers is 0.01 cm. Measuring the length of an object reading of main scale is 2.7 cm and the fifth division of vernier scale coincide with any division of main scale. The length of object will be
Zener diode is used as an
The percentage of Calcium in CaCO\(_3\) is
Modulus of rigidity of a liquid is
Ammonia is commercially prepared by
A sphere of 150 kg is kept on frictionless surface. A bullet of 0.15 kg mass with velocity 200 m/sec strikes the sphere and stops. After collision the velocity of sphere will be
Which one of the following is the standard for atomic mass?
Which of the following is not a nitrogenous fertilizer?
Gobar gas contains mainly
The material of permanent magnet has
Balance the equation
\[ {}^9_4\text{Be} + {}^4_2\text{He} \rightarrow {}^6_12\text{C} + \cdots \]
Electrical conductivity of a semiconductor
Accepting the definition that an acid is a proton donor, the acid in the following reaction
\[ NH_3 + H_2O \rightleftharpoons NH_4^+ + OH^- \] is
An aqueous solution of Ferric chloride is
The number of neutrons in \(^{238}U\) is
Number of moles in 180 grams of water is
The order of radius of the nucleus of an atom is
The metal which is found in the native state is