List of top Questions asked in AP EAPCET

Identify the correct statements about chemisorption:
  • I) It is irreversible adsorption
  • II) Enthalpy of adsorption is in the range of 20-40 kJ mol\(^-1\)
  • III) It is unlayered adsorption
  • IV) It does not need appreciable activation energy
Which of the following represents the roasting of the ore?
The number of moles of OH\(^-\) ions present in 100 mL of 0.2 M Al(OH)\(_3\) solution is (assume 100% dissociation)
The allotrope of carbon which is used as an abrasive for sharpening hard tools is


In the above reaction, the products X and Y may be

Identify the correctly matched pair from the following:
Which of the following is not correct for Frenkel defect?
Which of the following aqueous solutions has the highest osmotic pressure?
If the standard molar enthalpies of formation of \( C_2H_5OH(l)) \), \( CO_2(g) \), and \( H_2O(l) \) are -278, -394, and -286 kJ mol\(^{-1}\) respectively, the standard enthalpy of combustion of the reaction \[ C_2H_5OH(l) + 3O_2(g) \rightarrow 2CO_2(g) + 3H_2O(l) \] in kJ mol\(^{-1}\) is:
500 mL of 0.1M HCl is mixed with 500 mL of 0.02M HA (weak acid) solution. To this solution, 2 g of solid NaOH is added. What is the pH of the resultant solution? (Given} \( K_a \) of HA is \( 4 \times 10^{-10} \), molar mass of NaOH is 40 g/mol, log 2 = 0.3, log 4 = 0.6\bf{)
Among the following, which is the correct statement?
The alloy formed by lithium with metal 'X' is used to make armour plates. 'X' is
Which one of the following options is correct for \[ q = -ve, \, w = +ve \{ (where \(q\) and \(w\) are heat and work respectively)} \]
At 300 K, 1 g of an ideal gas (A) exerted a pressure of 2 atm in a closed container. When 2 g of another ideal gas (B) was introduced into this container at the same temperature, the pressure changed to 3 atm. The correct relationship between the molar mass of A (\(M_A\)) and B (\(M_B\)) is:
The number of antibonding electrons in \( N_2^+ \), \( O_2^+ \), \( O_2^- \) is respectively:
The total number of electrons in antibonding molecular orbitals of \( O_2 \) is:
The element with atomic number 118 will be:
Identify the correct statements from the following:
(I) According to Charles' law, at constant pressure, the volume of a gas is directly proportional to its temperature.
(II) The rate of diffusion of a certain mass of a gas is inversely proportional to its density, at constant pressure and temperature.
(III) The kinetic energy of a gas is directly proportional to T (K).

Match List I with List II:

Match the following:

The wave number of a photon is \( 10^4 \, cm^{-1} \). What is its energy in joules? Given: \[ h = 6.6 \times 10^{-34} \, Js, \quad c = 3 \times 10^{10} \, cm/s, \quad \tilde{\nu} = 10^4 \, cm^{-1} \]
Among the following, the possible nuclear reaction is:
In a transistor amplifier used in CE configuration, the phase difference between input voltage and output voltage is:
The intensity of ground waves decreases with the increase of distance travelled is due to:
n-type semiconductor is formed when germanium is doped with: