List of top Questions asked in AP EAPCET- 2025

Action of restriction enzyme leads to the formation of sticky ends in both vector DNA and Foreign DNA because of
I. Recognise palindromic nucleotide sequence.
II. Cut the strand of DNA a little away from the centre of palindrome site.
III. Help to form complementary cut counter parts.

Match the following

A mercury drop of radius $ 1 $ cm is divided into $ 10^6 $ droplets of equal size. If the surface tension of mercury is $ 35 \times 10^{-3} $ N/m, then the change in surface energy in the process is:

The magnitudes of two vectors $\vec{A}$ and $\vec{B}$ are $A$ and $B$ respectively, the magnitude of their resultant vector $\vec{R}$ is $R$. If $\theta$ is the angle between the vectors $\vec{A}$ and $\vec{B}$, the angle made by the vector $\vec{R}$ with the vector $\vec{A}$ is $\alpha$, then

For which of the following processes entropy change ($\Delta S$) is negative?
I) Sublimation of dry ice
II) Freezing of water
III) Crystallisation of the dissolved substance
IV) Burning of rocket fuel

Assertion (A): Pancreatic juice contains steapsin
Reason (R): Steapsin helps in protein digestion
Identify the correct option from the following:

The mean translational kinetic energy of a gas molecule at a temperature of 47 $^\circ$C is: (Boltzmann constant = 1.38 $\times$ 10$^{-23}$ J K$^{-1}$)

Match the parasites with their infective stages in humans:

Parasites	Infective stage
A) Entamoeba histolytica	I) Tetranucleate cyst
B) Plasmodium vivax	II) Sporozoite
C) Ascaris lumbricoides	III) 2nd stage Rhabditiform larva
D) Wuchereria bancrofti	IV) 3rd stage Microfilaria

A 48 V battery is supplying a current 12 A when connected to an external resistor. If the efficiency of the battery at this current is 75%, then the internal resistance of the battery is

Which of the following does not exist?

Choose the correct statements among the following
I. The longest cells are nerve cells.
II. Smaller DNA in the bacteria called genetic material.
III. Bacterial flagellum has filament, hook and basal body.
IV. In Bacteria, flagella are used to attach to the rock.

The metal purified by Mond process is X. The number of unpaired electrons in X is

Assertion (A): Lipids are not true Biomacromolecules.
Reason (R): The molecular weight of lipids is less than 800 Daltons.

A particle is executing simple harmonic motion with amplitude $ A $. At a distance $ x $ from the mean position, when the particle is moving towards the extreme position, it receives a blow in the direction of motion that instantaneously doubles its velocity. The new amplitude of the particle is:

What is the drug used to control depression and hypertension?

In a metal, the charge carrier density is $ 9.1 \times 10^{28} \, \text{m}^{-3} $ and its electrical conductivity is $ 6.4 \times 10^7 \, \text{S m}^{-1} $. When an electric field of $ 10 \, \text{N C}^{-1} $ is applied to the metal, then the average time between two successive collisions of electrons in the metal is:
(Mass of electron $ = 9.1 \times 10^{-31} \, \text{kg} $; charge of electron $ = 1.6 \times 10^{-19} \, \text{C} $)

What volume will 2 moles of an ideal gas occupy at STP (Standard Temperature and Pressure)?

As shown in the figure, the work done to move the charge 'Q' from point C to point D along the semi-circle CRD is

Assertion (A): Placenta of human beings is called haemochorial type.
Reason (R): Chorionic villi of the foetus comes into direct contact with the maternal blood.
Identify the correct option from the following:

A satellite is launched into a circular orbit of radius R around the earth. A second satellite is launched into another circular orbit of radius 1.01 R around the earth. The period of revolution of the second satellite is larger than that of the first one by a percent of (approximately)

Choose the incorrect statement from the following

A body A of mass 200 g moving with a velocity $\vec{v}_1 \hat{i}$ makes collision with another body B of mass 100 g moving with a velocity $\vec{v}_2 \hat{i}$. After collision, A and B move with velocities $\vec{v}_3 \hat{i}$ and $\vec{v}_4 \hat{i}$ respectively. If $v_3 = 0.5v_1$, then the value of $v_1$ is

How many of the following molecules / ions have a trigonal planar structure?
$ \text{BO}_3^{3-}, \, \text{NH}_3, \, \text{PCl}_3, \, \text{BCl}_3, \, \text{ClF}_3, \, \text{XeO}_3 $

The correct order of increasing bond lengths of C--H, O--H, C--C, and H--H is

Match the following:

List-I		List-II
A.	Nitzschia	I.	Plankton
B.	Certia	II.	Neuston
C.	Notonecta	III.	Nekton
D.	Hydra	IV.	Periphyton