List of top Questions asked in OJEE- 2025

Unit of sound absorption is
The concept of ‘Serial Vision’ was given by?
Paris Climate Agreement was signed in:
Who is hailed as the ‘Father of Skyscrapers’?
Which among the following was not built by Mughal emperor Akbar?
Which city among the following is located in the sacred ‘Triveni Sangam’?
The gravity controlled instrument has crowded scale because current is proportional to
In the measurement of power consumed by a three-phase balanced inductive load using two-wattmeter method, one of the wattmeters \( W_2 \) shows zero reading. The load power factor is
To avoid the cripping error in the energy meters, the discs must
Active materials of a lead acid cell are
In a lead acid cell, hydrogen is liberated at
The Indian Coffee House, Thiruvananthapuram was designed by
During charging, the electrolyte of a lead acid battery becomes
The impedance of a coil connected across a single-phase AC source is \( 3 + j4 \) ohms. If another capacitive load with an impedance of \( 3 - j4 \) ohms is connected in parallel with this coil, the overall impedance seen by the AC source will be
The overall power factor of a series R-L-C (R = resistance, L = inductance and C = capacitance) circuit with a resistance of 100 ohms, inductive reactance of 273.2 ohms and capacitive reactance of 100 ohms will be
The capacitive reactance offered by a capacitance of 10 microfarads to an alternating current of \( i = I_m \sin(100\pi t - \frac{\pi}{6}) \) amperes is
The reactive power demanded by a circuit element will be zero when the phase difference between the current passing through it and the voltage across it becomes equal to
If a body moving with uniform acceleration travels a distance of 10 m in the first 10 s, then how much total distance in m will it cover at the end of 30 s from the beginning?
Area under velocity-time graph gives
If \( V_A \) and \( V_B \) are velocities of A and B respectively and their directions are normal to each other, the relative velocity of A with respect to B is
If two stones A and B are thrown upwards at angles of 30° and 60° respectively with ground at same speed, which stone will have longer horizontal range?
The ratio of maximum vertical to maximum horizontal distances travelled by a projectile with \( \theta \) as the angle of initial velocity with ground depends on
If \( m \) is the mass of the projectile thrown upwards with velocity \( u \) at an angle \( \theta \) with the ground, then the change in momentum from the lowest to highest point of its trajectory will be
Let \( \vec{x} \) and \( \vec{y} \) be two unit vectors and \( \theta \) is the angle between them. Then \( \vec{x} + \vec{y} \) is a unit vector if
If the vectors \( 2\hat{i} - 3\hat{j} + \hat{k} \) and \( 3\hat{i} - 4\hat{j} - \hat{k} \) form three concurrent edges of a parallelepiped, then the volume of the parallelepiped is