List of top Questions asked in AP ECET CE

How many moles of urea is present in 250 ml of 0.2 M solution of it?
In which of the molecules lone pair, bond pair of electrons ratio is 2:3 ?
Consider the elements with atomic numbers Z = 8, 9, 11, 19 and 20. The number of ionic compounds possible with the elements having these atomic numbers is
If n, l, m and s represent the symbols of quantum numbers, the impossible quantum number set for the electron in terms of n, l, m and s respectively is
Identify the orbital which has lobes not orienting on the axis
Consider the elements with atomic numbers Z = 1 to Z=20. The number of elements with only one unpaired electron in their ground state is
Light of wavelength 5000 A° falls on a sensitive plate with photo electric work function of 1.9 eV. The kinetic energy of the emitted photoelectron will be
An endoscope is employed by a physician to view the internal parts of a body organ. It is based on the principle of
A bubble rises from the bottom of a lake 90 m deep on reaching the surface, its volume becomes (Atmospheric pressure is 10 m of water)
A sealed glass jar is full of water. When its temperature is decreased to 0° C
A vessel containing 10 liters of an ideal gas at a pressure of 760 mm of Hg is connected to an evacuated 9 liter vessel. The resultant pressure is
A gas is compressed at a constant pressure of 50 N/m\(^2\) from a volume of 10 m\(^3\) to a volume of 4 m\(^3\). Energy of 100 J is then added to the gas by heating. Its internal energy is
During the melting of a slab of ice at 273K at atmospheric pressure
A siren emitting sound of frequency 800 Hz is going away from a static listener with a speed of 30 m/s. Frequency of sound heard by the listener is (Velocity of sound in air = 340 m/s)
The beats are produced by two sound sources of same amplitude and of nearly equal frequencies. The maximum intensity of beats will be __________ when compared to that of one source is
The displacement of a particle executing SHM is \(x = 3 \sin 2t + 4 \cos 2t\). The amplitude of particle is
The amplitude of a simple harmonic oscillator is A. When the velocity of particle is half of its maximum velocity, then its position is at
If a seconds pendulum on the earth is taken to a planet whose gravity is half of the gravity on earth, its time period on that planet is
An engine delivers 1000 watt of power with 80% efficiency. The input power is
At her maximum height a girl in a swing is 3m above the ground and at the lowest point she is 2m above the ground. Her maximum velocity is
A body of mass 2 Kg changes its velocity from (3\(\hat{i}\) - 4\(\hat{j}\)) m/s to (6\(\hat{j}\) + 2\(\hat{k}\)) m/s. what is the change in kinetic energy of the body?
The time taken by a body to slide down the smooth inclined plane is 4sec. The time taken by a body to slide 1/4th of the length of the plane is
A block of mass m is lying on an inclined plane. The coefficient of friction is \(\mu\). The force required to move the block up the inclined plane will be
A juggler throws ball into air. He throws one whenever the previous one is at its highest point. How high do the balls rise if he throws n balls each second?
A body starts from rest and travels with uniform acceleration. If the distance covered in first 2 seconds is 'x' and next 2 seconds is 'y', then