List of top Questions asked in AP EAPCET- 2023

Match the following:

Property	Expression
A. π	I. K_b · m
B. ΔT_f	II. K_f · m
C. ΔT_b	III. CST
D. (P⁰ - P) / P⁰	IV. (n₁ / (n₁ + n₂))

The correct order of the metallic nature of the following elements is

Work function of Cu metal is 4.8 eV. What is the approximate wavelength of incident radiation required to eject electrons from its surface? ($h = 6.626 \times 10^{-34}$ Js)

The number of products obtained in the following reaction is: Reaction:

Relative stability orders of +1, +3 oxidation states of Ga, In, Tl are respectively

What is ‘X’ in the following reaction?

Which of the following alkyl halides is most reactive towards substitution by $ S_N1 $ mechanism?

The number of moles of OH$^-$ ions present in 100 mL of 0.2 M Al(OH)$_3$ solution is (assume 100% dissociation)

Identify the region of spectral lines of electromagnetic spectrum, when electron transition takes place from higher energy levels to n = 3, 4, 5 in atomic spectrum of hydrogen.

At T (K), a gaseous mixture containing H₂, He and O$_$2 exerted a pressure of 1 bar. The weight percentage of H$_$2 and He is 20 and 16 respectively. The partial pressure (in bar) of H$_$2, He and O$_$2 is respectively

X and Y in the following reactions are:

1-Chloro-4-nitrobenzene, 1-Chloro-2,4-dinitrobenzene and 1-Chloro-2,4,6-trinitrobenzene are transformed to corresponding phenols with the reagents X, Y, Z respectively. What are X, Y, Z?

What are ‘X’ and ‘Y’ respectively in the following reactions?

The IUPAC name of the following molecule is

Among the following, which statement is not correct?

Which of the following species has an unpaired electron?

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

The molarity of the solution when 4.9 g of H$_2$SO$_4$ is dissolved in 250 mL of solution is

The molar conductivity of 0.027 M methanoic acid is 40.42 S cm2 mol–1. The value of dissociation constant of this acid is (Given: $\lambda^0_{H^+} = 349.6~\text{S cm}^2 \text{mol}^{-1},~\lambda^0_{HCOO^-} = 54.6~\text{S cm}^2 \text{mol}^{-1}$)

The angular momentum of electron in H atom in a particular n state is $\frac{h}{\pi}$. What is the energy in J required to excite the electron from this particular n state to (n+1) state?

The correct order of covalent radii of Si, Ge, Sn is:

When $10^{-3} \, M$ solution of glucose in water freezes at -0.0186°C, then at what temperature $10^{-3} \, M$ solution of NaCl will freeze?

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 rate constants of a first-order reaction at 300 K is $ k_1 $ and 400 K is $ k_2 $. What is the value of $ \frac{k_2}{k_1} $ if activation energy of reaction is $ 41.5 \, \text{kJ mol}^{-1} $?
($R = 8.314 \, \text{J K}^{-1} \text{mol}^{-1}$

At 300 K the enthalpy change for the following reaction is -2800 kJ mol$^{-1}$ \[ C_6H_{12}O_6(s) + 6O_2(g) \rightarrow 6CO_2(g) + 6H_2O(l) \] What is the $\Delta U$ for the same reaction at 300 K (kJ mol$^{-1}$)?