List of top Questions asked in AP EAPCET- 2023

The first ionization enthalpies of Na, Mg and Si are respectively 496, 737 and 786 kJ mol−1. What would be the first ionization enthalpy of Al in kJ mol−1?
The resistance \( R \), the inductive reactance \( X_L \), and the capacitive reactance \( X_C \) of a series LCR circuit connected to an ac source are related by \( R = 0.6 X_L = 3 X_C \). The impedance of the circuit is:
The smooth and rough endoplasmic reticulum are involved in the synthesis of
The resultant of two vectors \( \mathbf{A} \) and \( \mathbf{B} \) is perpendicular to vector \( \mathbf{A} \), and the resultant magnitude is equal to half of the magnitude of \( \mathbf{B} \). The angle between \( \mathbf{A} \) and \( \mathbf{B} \) is:
A block of mass \( m \) and charge \( q \) is connected to a point 'O' with an inextensible string. This system is on a horizontal table. An electric field \( E \) is applied perpendicular to the string and in the plane of the horizontal table. The tension in the string when it becomes parallel to the electric field is:
Assertion (A): Photorespiration is a wasteful process.
Reason (R): There is no synthesis of sugars, ATP or NADPH, instead ATP is utilized and CO$_2$ is released in photorespiration.
A convex lens has radius of curvature \( R = 40 \, \text{cm} \) for both surfaces and refractive index \( \mu = 1.5 \). Find the focal length.
Choose among the following the characters of Ophiuroidea of phylum Echinodermata:

Which of the following are homopolymers?

In humans, sex is determined at the time of
Observe the following species: AlCl$_3$, NH$_3$, H$^+$, Co$^{3+}$, $^-$OH, Mg$^{2+}$, BF$_3$, Cl$^-$ How many Lewis acids are present in the above list?
In the above reaction, a and b are
$2NH_{3} + 3O_{2}$ → a + $2NO_{2} + O_{2}$ → b → $2NO_{3}$
The energy (in eV) possessed by a neon atom at $77^\circ$C is (Boltzmann constant, $k_B = 1.38 \times 10^{-23}$ J K$^{-1}$)
The correct order of bond enthalpy of given molecules is
A steel ball of radius 0.05 cm and density \( 7.8 \, \text{g/cm}^3 \) is dropped into water. What is its terminal velocity?
(Density of water \( = 1 \, \text{g/cm}^3 \), Viscosity of water \( = 0.001 \, \text{Pas} \))
Which of the following macromolecules is crucial to the communication system in the body?
How many asymmetric carbons are present in the following molecule? HOCH$_2$CH(Br)CH(Br)CH$_2$OH
The correct combinations among the following:
ScientistEvent / Contribution
I. Miescher Named nuclein
II. FisherDiscovered purines
III. AltmanIsolated nucleic acids
IV. FranklinDNA X-ray diffraction
Coal, Petroleum (oil) and Natural Gas belong to which type of fuels?
Women have which type of sex chromosomes?
Hemozoin is
The hormone that increases blood calcium levels by promoting absorption of $Ca^{2+}$ from gastrointestinal tract is
Which of the following contains 10 electrons, 11 protons, and 12 neutrons?
Assertion (A): Loss or gain of a segment of DNA results in alteration in chromosomes.
Reason (R): Alterations in chromosomes do not result in abnormalities.
A body 'A' of mass $ m_1 $ moving with a velocity of 6 m/s collides with another body 'B' of mass $ m_2 $ which is at rest. After collision if 'A' moves with 2 m/s and 'B' moves with 3 m/s in the initial direction of A, then the ratio of $ \frac{m_1}{m_2} $ is