List of top Questions asked in AP EAPCET

If the system of equations $ 2x + 3y - 3z = 3,\ x + 2y + \alpha z = 1,\ 2x - y + z = \beta $ has infinitely many solutions, then $ \frac{\alpha}{\beta} = \frac{\beta}{\alpha} $

The correct order of boiling points of the compounds given below is 
[A)] Methoxy ethane 
[B)] Propan-1-ol 
[C)] Propanal 
[D)] Propanone

Which of the following represents Etard reaction?
Which of the following is the product of Fittig reaction?
Novolac is formed by the polymerisation of monomer 'x' in the presence of OH– ions. What is 'x'?
How many of the following lanthanide elements exhibit +4 oxidation state?
Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy
In the extraction of iron from haematite, the impurity (x) of the ore is removed in the form of 'y'.
What are x and y respectively?
In Buckminster fullerene, the number of six-membered carbon rings is ‘x’ and five-membered carbon rings is ‘y’. What is the value of (x + y)?
The incorrect statement from the following is
The incorrect statement in the following is:

At 25\(^\circ\)C, the percentage of ionization of 'x' M acetic acid is 4.242. What is the value of x? \((K_a = 1.8 \times 10^{-5})\)

Identify the correct statements from the following:
I) Work is a path function.
II) Enthalpy is an extensive property.
III) Lattice enthalpy of ionic compounds can be obtained from Born–Haber cycle.

The most probable speed \(u_{mp}\) of 8 g of H\(_2\) is \(2 \times 10^2\) ms\(^{-1}\). The kinetic energy (in J) of the same amount of H\(_2\) gas is

At T(K), a gaseous mixture contains H\(_2\) and O\(_2\). The total pressure of the mixture is 2 bar. The partial pressure of H\(_2\) is 1.778 bar. What is the weight (w/w) percentage of H\(_2\) in the mixture?
Which of the following sets of quantum numbers is not possible for the electron?
If the time taken for a radioactive substance to decay 8% to 77% is 12 minutes, then the half life of the substance in minutes is
The difference between the frequencies of second and first Paschen lines of hydrogen atom is
(\( R \) - Rydberg constant and \( c \) - speed of light in vacuum)
The magnitude of the electric field of a plane electromagnetic wave travelling in free space is \( E \). If \( \mu_0 \) and \( \varepsilon_0 \) are respectively permeability and permittivity of the free space, then the magnitude of magnetic field of the wave is
The force per unit length on a straight wire carrying current of 8 A making an angle of \(30^\circ\) with a uniform magnetic field of 0.15 T is
Charge 'Q' (in coulomb) flowing through a conductor in terms of time 't' (in seconds) is given by the equation \( Q = 3t^2 + t \). The current in the conductor at time \( t = 3 \, \text{s} \) is:
In a region, the electric field is given by $\vec{E} = (3\hat{i} + 5\hat{j} + 7\hat{k})\ \text{N/C}$. The electric flux through a surface of area $3\ \text{m}^2$ in the $yz$-plane is (in SI units):
If the ratio of specific heats of a gas at constant pressure and at constant volume is $\gamma$, then the number of degrees of freedom of the rigid molecules of the gas is
The fundamental limitation to the coefficient of performance of a refrigerator is given by
During adiabatic expansion, if the temperature of 3 moles of a diatomic gas decreases by \(50^\circ \text{C}\), then the work done by the gas is
(R - Universal gas constant)
A Carnot heat engine absorbs 600 J of heat from a source at a temperature of 127°C and rejects 400 J of heat to a sink in each cycle. The temperature of the sink is