List of top Questions asked in AP EAPCET- 2023

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

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

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.

The IUPAC name of the following molecule is

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?

X and Y in the following reactions are:

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

Among the following, which statement is not correct?

Which of the following species has an unpaired electron?

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?

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:

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

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?

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

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

The structure of $\beta$-D-galactopyranose is

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$^{-1}$)?

34.2% (W/V) sucrose $ \left( \text{C}_6\text{H}_2\text{O}_1\right) $ solution is isotonic with 18% (W/V) of unknown solution X. Formula of X is

The adsorption of a gas on solid adsorbent follows Freundlich adsorption isotherm. The graph drawn between $ \frac{X}{m} $ and $ p $ at different temperatures X, Y, Z is shown. (X = mass of gas adsorbed, m = mass of adsorbent and p = Pressure of gas). The correct relation between X, Y, Z is:

From the following, number of fat soluble and water soluble vitamins respectively are A D C B$_1$ K B$_6$

In which one of the following pairs, both oxides are acidic?

The nature of CrO$_3$, CrO and Cr$_2$O$_3$ is respectively

In which of the following, the molecules are arranged in the increasing order of their bond angles?