List of top Questions asked in AP EAPCET- 2026

Which of the following is not correctly matched with respect to the nature of oxides?

Which of the following orders are not correct regarding first ionisation enthalpy of the given elements (I: B>Al, II: Al>Ga, III: Ga>In, IV: In>Tl)?

Statement I: The groups $NHCOCH_3$ and $-OCOCH_3$ deactivate the benzene ring for electrophilic attack. Statement II: -OH and $-CH_2CH_3$ groups activate the benzene ring for electrophilic attack.

Consider the following reaction: $A(g) + B(g) \rightleftharpoons C(g) + D(g)$. Which one of the following is zero for this reaction at 298 K?

The pH of a 0.1 M solution of a weak monobasic organic acid is 4.0. What is the dissociation constant of the acid?

What is $\Delta_r H^\ominus$ (in kJ mol$^{-1}$) for the following reaction at 298 K? $C_3H_8(g) + 5O_2(g) \rightarrow 3CO_2(g) + 4H_2O(l)$ (Given: $\Delta_f H^\ominus$ of $C_3H_8(g)$, $CO_2(g)$ and $H_2O(l)$ is -104, -393 and -285 kJ mol$^{-1}$ respectively)

In a tube, a liquid is flowing as shown in the diagram. The correct order of the velocity (u) of liquid flowing in this tube is: figure [H]

figure

One mole of $O_2$ (g) was passed over hot coke. At the end of the reaction, 40 % of $O_2$ (g) was unreacted. What is the volume (in L) of reaction mixture at STP (273.15 K and 1 bar)? (Assume only CO (g) is formed in the reaction)

At T(K) the $K_c$ for the reactions (I) and (II) are $2.4 \times 10^{30}$ and 1.4 respectively. What is the $K_c$ value for: $\frac{1}{2}N_2(g) + \frac{1}{2}O_2(g) + \frac{1}{2}Br_2(g) \rightleftharpoons NOBr(g)$?

Identify the pairs of elements, which possess almost the same size as well as properties

In how many of the above molecules ($PF_5, H_2O, NH_3, XeF_2, BF_3, SF_6, IF_7$), the ratio between the number of bond pairs of electrons and lone pairs of electrons is 1:3?

The difference between the radii of M and N shells of $He^+$ is $\Delta R_1$(nm). The difference between the radii of L and N shells of $Li^{2+}$ is $\Delta R_2$(nm). The ratio of $\Delta R_1$ to $\Delta R_2$ is:

If the velocity of an electron in the first Bohr's orbit of H-atom is x $ms^{-1}$, then the velocity (in $ms^{-1}$) of an electron in the fourth Bohr's orbit of the same atom is:

Over modulation occurs when modulation index 'm' is:

The number of Pi ($\pi$) bonds in $C_2H_4, C_2H_2$ and $C_2N_2$ is x, y and z respectively. The sum of x, y and z is equal to:

A resistor of resistance 30 $\Omega$ and a capacitor of reactance 40 $\Omega$ are connected in series to an ac supply. If the rms current through the resistor is 2 mA, then the wattless current is:

If the average energy density of the electric field of an electromagnetic wave is $U_E$ and the average energy density of the magnetic field of the wave is $U_B$, then:

In hydrogen atom, if the kinetic energy of an electron in an orbit having angular momentum $2h/\pi$ is E, then the potential energy of the electron in the first orbit of hydrogen atom is:

The energy of a photon of wavelength 2500 is 4.96 eV. When photons of wavelength 3100 incident on a photosensitive material of work function 2.2 eV, the maximum velocity of the emitted photoelectrons is:

If decay constant of a radioactive element doubles, then its half-life time becomes:

For the circuit given below, which of the following is correct option?

The mutual inductance of a pair of adjacent coils is 5 H. If the current in one coil changes from 0 to 12 A in a time of 0.75 s, then the change of flux linkage with the other coil is:

If a wire of length 196 cm carrying a current of 0.98 A is bent in the form of a circular loop of two turns, then the magnetic field at the centre of the loop is approximately:

If the horizontal component of earth's magnetic field at a place is $2.8 \times 10^{-5}$ T and the magnetic field of the earth at this place is $5.6 \times 10^{-5}$ T, then the inclination at the place is:

Two conducting thin concentric shells of radii $r$ and $2r$ are shown. Outer shell carries a charge Q. Inner shell is neutral. The charge that will flow from the inner shell to earth after closing the switch $s$ is: figure [H]

figure