List of top Questions asked in AP EAPCET- 2025

Alkaline oxidative fusion of MnO$_2$ gives 'X'. The products formed when 'X' undergoes disproportionation in acid medium are
I) KMnO$_4$
II) MnO$_2$
III) O$_2$
IV) H$_2$O
A compound (X) produces an alkene when treated with H$_2$ in the presence of Na/liquid NH$_3$. Ozonolysis of this alkene gives ethanol and methanal. "X" is
In Am$^{3+}$ (Z = 95), the number of f-electrons with ($n + \ell$) value equal to 8 is (where $n$, $\ell$ represent principal and azimuthal quantum numbers)
Which of the following reagents will oxidise glucose to gluconic acid?
Br$_2$/H$_2$O
HNO$_3$
[Ag(NH$_3$)$_2$]^+ / OH$^-$
During the denaturation of proteins, which of the following structures will remain intact?
In which of the following, elements are correctly arranged in the decreasing order of atomic radius?
The pH of a mixture containing 100 mL of 0.5 M acetic acid and 50 mL of 0.2 M NaOH is (p\(K_a\) of CH\(_3\)COOH = 4.8).
(Given: \( \log 3 = 0.48 \), \( \log 4 = 0.60 \))
At T(K), \( K_c \) value for the dissociation of \( \text{PCl}_5 \) is 0.04.
\[ \text{PCl}_5(g) \rightleftharpoons \text{PCl}_3(g) + \text{Cl}_2(g) \] The number of moles of \( \text{PCl}_5 \) to be added to a 3.0 L flask to get chlorine concentration of 0.15 mol L\(^{-1}\) is (approximately)?
The wavelength of spectral line corresponding to electron transition \( n = 3 \) to \( n = 2 \) for \( \text{Li}^{2+} \) ion is \( \lambda \,\text{nm} \). What is the wavelength (in nm) corresponding to electron transition \( n = 4 \) to \( n = 1 \) for \( \text{He}^+ \) ion?
What are X and Y in the following set of reactions?
(dry acetone)
Y’ in the following reaction sequence
The SN$_2$ reactivity of the following compounds will be in the order:
I) C$_6$H$_5$CH(CH$_3$)Br
II) (C$_6$H$_5$)$_2$CHBr
III) (C$_6$H$_5$)$_2$C(CH$_3$)Br
IV) C$_6$H$_5$CH$_2$Br
Match the following:
List-I (Complex)List-II (Isomerism) 
A) [Co(NH3)5Br]SO4V) Ionization
B) [Co(en)3]3+I) Optical
C) [Co(NH3)5(NO2)]2+II) Linkage
D) [Co(NH3)3Cl3]III) Geometrical
Observe the following given changes: \[ \text{wood} \xrightarrow[\text{absence of air}]{\text{high temperature}} X
\text{coal} \xrightarrow[\text{absence of air}]{\text{high temperature}} Y \] X and Y respectively are:
Which of the following methods are used to remove temporary hardness of water? I) Boiling
II) Calgon method
III) Clark's method
Consider the following:
Statement-I: \( \text{CO}_2 \) is released into atmosphere by burning of fossil fuels and increase in \( \text{CO}_2 \) levels in air causes global warming.
Statement-II: CO is released into the air mainly by automobile exhaust and it is a lung irritant.
Zinc sulphide reacts with oxygen and gives two oxides, X and Y. If nature of X is acidic, the nature of Y is
Consider the following:
Statement I: Real gases exhibit ideal behaviour at high pressures and low temperatures.
Statement II: At high pressure, all gases have compressibility factor (Z) either as 1 or< 1.
At T(K), a gaseous mixture contains H\(_2\) and O\(_2\). The total pressure of the mixture is 2 bar. The weight percentage (w/w) of H\(_2\) is 33.33%. What is the approximate ratio of partial pressure of H\(_2\) and O\(_2\)?
The time required for 100% completion of a zero order reaction is
[$R$]$_0$ = Initial concentration of reactant, R
From the following identify the change in which electron gain enthalpy is positive. (g = gas phase):
Observe the following molecules:
\({SO}_2, {H}_2{O}, {HgCl}_2, {BeCl}_2, {XeF}_2, {O}_3, {NO}_2, {PbCl}_2\).
The number of molecules with the same geometry as that of \({SnCl}_2\) is:

Match the following molecules with their bond angles:

List-I (Molecule) List-II (Bond angle) 
A) \(\mathrm{NH}_3\) I) 102.2° 
B) \(\mathrm{O}_3\) II) 107.8° 
C) \(\mathrm{S}_6\) III) 93.6° 
D) \(\mathrm{PH}_3\) IV) 117° 
A spectral line of Lyman series of H-atom has a frequency of \(2.466 \times 10^{15} \, {s}^{-1}\). What is the transition responsible for this spectral line? (Rydberg constant \(R = 1.096 \times 10^7 \, {m}^{-1}\))
Which of the following aqueous solutions has highest pH? (Given \(\log 2 = 0.30\), \(\log 3 = 0.48\), \(\log 4 = 0.60\), \(\log 5 = 0.70\))
At what temperature rms speed of \({SO}_3\) molecules is \(3.16 \times 10^2 \, {ms}^{-1}\)? (R = 8.314 J K\(^{-1}\) mol\(^{-1}\))