List of top Questions asked in AP EAMCET

The sequence of reagents required to convert ethyl bromide to propanal is:
What are X, Y, Z in the following reaction sequence respectively?
Gattermann-Koch reaction
A Grignard reagent (X) on reaction with carbonyl compound (Y) followed by hydrolysis gave Z. Z reacts with conc. HCl at room temperature. X and Y respectively are
Which of the following is incorrect?
What are X and Y respectively in the following reactions?
bromination under UV light
Which of the following acts as intracellular messengers?
At 300 K, the \( E^\ominus_{cell} \) of \[ \text{A(s)} + \text{B}^{2+}(\text{aq}) \rightleftharpoons \text{A}^{2+}(\text{aq}) + \text{B(s)} \] is 1.0 V. If \( \Delta_r S^\ominus \) of this reaction is 100 J K\(^{-1}\), what is \( \Delta_r H^\ominus \) (in kJ mol\(^{-1}\)) of this reaction?
(F = 96500 C mol\(^{-1}\))
Identify the correct sets:
(i) Boron fibres- bulletproof vest
(ii) Metal borides- protective shields
(iii) Borax- glass wool
The number of alicyclic compounds from the following is: Cyclohexene, Anisole, Pyridine, Tetrahydrofuran, Biphenyl
Which of the following is a lung irritant?
A 10 L vessel contains 1 mole of an ideal gas with pressure of P(atm) and temperature of T(K). The vessel is divided into two equal parts. The pressure (in atm) and temperature (in K) in each part is respectively.
The following configuration of gates is equivalent to:
configuration of gates
An alternating current is given by \( i = (3 \sin \omega t + 4 \cos \omega t) \) A. The rms current will be:
Energy levels A, B, and C of a certain atom correspond to increasing values of energy, i.e., \( E_A<E_B<E_C \). If \( \lambda_1, \lambda_2, \) and \( \lambda_3 \) are the wavelengths of a photon corresponding to the transitions shown, then:
Energy levels A, B, and C
A charge ‘q’ is spread uniformly over an isolated ring of radius ‘R’. The ring is rotated about its natural axis with angular speed \( \omega \). The magnetic dipole moment of the ring is:
The frequency of fifth harmonic of a closed pipe is equal to the frequency of third harmonic of an open pipe. If the length of the open pipe is 72 cm, then the length of the closed pipe is:
A gas absorbs 18 J of heat and work done on the gas is 12 J. Then the change in internal energy of the gas is:
The ratio of the molar specific heat capacities of monatomic and diatomic gases at constant pressure is:
As shown in the figure, two blocks of masses \(m_1\) and \(m_2\) are connected to a spring of force constant \(k\). The blocks are slightly displaced in opposite directions to \(x_1, x_2\) distances and released. If the system executes simple harmonic motion, then the frequency of oscillation of the system (\(\omega\)) is:
twoblocksofmassesm1andm2
A particle of mass \( m \) at rest on a rough horizontal surface with a coefficient of friction \( \mu \) is given a velocity \( u \). The average power imparted by friction before it stops is:
The moment of inertia of a solid sphere about its diameter is 20 kg m². The moment of inertia of a thin spherical shell having the same mass and radius about its diameter is:
A person walks up a stalled escalator in 90s. When standing on the same moving escalator, he reached in 60s. The time it would take him to walk up the moving escalator will be:
The differential equation for which \( ax + by = 1 \) is the general solution is:
If \( A = \int_0^{\infty} \frac{1 + x^2}{1 + x^4} dx \) and \( B = \int_0^1 \frac{1 + x^2}{1 + x^4} dx \), then:
The solution of the differential equation \( e^x y dx + e^x dy + xdx = 0 \) is: