List of top Questions asked in AP EAPCET

Observe the following solutions: \[ \text{I. Black coffee} \quad \text{II. 0.2M NaOH} \quad \text{III. Lemon juice} \] \[ \text{IV. Lime water} \quad \text{V. Human Saliva} \quad \text{VI. Tomato juice} \] The number of solutions with pH less than 7 is

At 300 K, the compressibility factor of 1 mole of a gas is 1.1. Its pressure is 2.706 atm. What is its volume in L? (Given R = 0.082 L atm mol$^{-1}$ K$^{-1}$)

At T (K) and pressure P, the diffusion rate of an ideal gas is 120 mL min$^{-1}$. What is the time taken (in sec.) for 3000 mL of this gas for diffusion at the same temperature and pressure?

Observe the following reaction \[ xS_8 (s) + yOH^-(aq) \to zS^{2-}(aq) + 2S_2O_3^{2-}(aq) + 6H_2O(l) \] x, y and z are respectively.

If \( \Delta G \) and \( \Delta S \) for the reaction \( A(g) \to B(g) + 2C(g) \) at 2000 K are -40 kJ mol$^{-1}$ and 0.22 kJ K$^{-1}$ mol$^{-1}$, respectively, the change in internal energy for the same reaction approximately (in kJ mol$^{-1}$) is?

The P − P bond angle in P4 and S − S bond angle in cyclo S8 molecule are respectively

The correct order of C − O bond length in CO, CO2−3, CO2 is

If 100 L of an ideal gas at a pressure of 2 atm is compressed isothermally and reversibly to a final volume of ‘X’ L releases -460.6 L atm heat, the final volume ‘X’ (in L) is

Consider the elements Ne, Na, Mg. The element with highest first ionization enthalpy and element with lowest second ionization enthalpy respectively are

The process of retrieval of information from the carrier wave

The load resistance and the base-emitter voltage of a transistor in CE configuration are 5 kΩ and 0.02 V respectively. If the collector current is 2 mA, then its voltage gain is

The laser in an audio compact disc uses light of wavelength \( 7.8 \times 10^{-2} \, \text{nm} \). What is the frequency of light emitted by the laser?

The device that can detect optical signals is

The number of d-electrons in \( \text{Cr}^{3+} \) ion (\( Z = 24 \)) is

The IUPAC symbol for the element with atomic number 108 is

The threshold frequency of a photosensitive material is \( v \). When photons of frequency \( 2v \) incident on the material, photoelectrons are emitted with a maximum linear momentum \( P \). To get photoelectrons with maximum linear momentum \( 2P \), the frequency of the incident photons is

A resistor of resistance \( R \) and an inductor of inductive reactance \( R \) are connected in series to an ac source. A capacitor of capacitive reactance \( 2R \) is then connected in series with \( L \) and \( R \). The ratio of the power factors of LR and LCR circuits is

An ac generator converts

An alpha particle of energy \( K \, \text{MeV} \) is moving towards a nucleus of atomic number \( Z \). The distance of closest approach of the alpha particle to the nucleus in meters is

The magnitude of the axial field due to a short bar magnet at a distance of 50 cm from its mid-point is

The nucleus having highest binding energy per nucleon is

When a metal target is bombarded with high-energy electrons, the electromagnetic waves generated are

A circular coil of 30 turns and radius 8 cm carrying a current of 6 A is suspended vertically in a uniform horizontal magnetic field of magnitude 1.0 T. The field lines make an angle of 30° with the normal of the coil. The magnitude of the counter torque that must be applied to prevent the coil from turning is

Two resistances are connected in the two gaps of a meter bridge. The balancing point is obtained at 20 cm. When a resistance of \( 15 \, \Omega \) is connected in series with the smaller resistance of the two, the balancing point shifts to 40 cm. The value of smaller resistance is

Two electric dipoles, each of dipole moment ‘P’, are placed at points A (\(a,0\)) and B (\(-a,0\)) as shown in the figure. The work done in rotating both the dipoles through 90° in clockwise direction is (E = Electric field)