List of top Questions asked in AP EAPCET- 2025

Match the following 

White phosphorus on heating with concentrated NaOH solution in an inert atmosphere of CO\(_2\) gives a salt 'X' and gas 'Y'. The oxidation state of central atom in X and Y is respectively
The de Broglie wavelengths of two fast-moving particles \( X \), \( Y \) are \( 1 \) nm, \( 3 \) nm respectively. Mass of \( X \) is nine times the mass of \( Y \). The ratio of kinetic energies of \( X \), \( Y \) is:
Consider the following Statement-I : Lactose is composed of \( \alpha \)-D-glucose and \( \beta \)-D-glucose. Statement-II : Lactose is a reducing sugar. The correct answer is
Which of the following is not correct?
In the given reaction sequence, conversion of Acetophenone (\( C_6H_5COCH_3 \)) to Ethylbenzene (\( C_6H_5CH_2CH_3 \)) is an example of: \[ \text{CH}_3\text{COC/} \] \[ \text{Anhy. AlCl}_3 \xrightarrow{\text{X}} \xrightarrow{\text{(1) N}_2\text{H}_4} Y \] \[ \Delta \xrightarrow{\text{(2) KOH / glycol}} \]
What are B and C respectively in the following set of reactions? \[ \text{C (1,2-dibromopropane)} \xrightarrow{\text{Zn},\ \Delta} \text{A} \xrightarrow[\text{(ii) NaNH}_2]{\text{(i) alc. KOH}} \text{B} \xrightarrow{\text{Lindlar Catalyst}} \text{C} \]
Which of the following statements is not correct for glucose?
What is the equivalent weight of sulphuric acid (H2SO4) in a reaction where it donates 2 H+ ions?
At T(K), the $v_{\text{rms}$ of CO$_2$ is 412 m/s$^{-1}$. What is its kinetic energy (in kJ mol$^{-1}$) at the same temperature? (CO$_2$ = 44 u)

Match the Following

List-I (Use)ItemMatches withList-II (Substance)
AElectrodes in batteriesIIPolyacetylene
BWelding of metalsIIIOxyacetylene
CToysIPolypropylene
Orthophosphorus acid on disproportionation gives PH$_3$, and another oxoacid of phosphorus X. The basicity of X is
What are x and y in the following reaction sequence?
x and y in the following reaction sequence?

Match the following:

List-I (Aquated ion)List-II (Colour)
A) Ni\(^{2+}\)V) Green
B) Fe\(^{3+}\)III) Yellow
C) Mn\(^{3+}\)I) Violet
D) V\(^{4+}\)II) Blue
Benzoic acid molecules undergo dimerisation in benzene. 2.44 g of benzoic acid when dissolved in 30 g of benzene caused depression in freezing point of 2 K. What is the percentage of association of it ? (Given $K_f (C_6H_6) = 5\operatorname{K kg mol^{-1}}$; molar mass of benzoic acid $= 122\operatorname{g mol^{-1}}$)

Consider the following 
Statement-I: Cane sugar is a disaccharide of \(\alpha\)-D-glucose and \(\beta\)-D-fructose
Statement-II: Milk sugar is a disaccharide of \(\alpha\)-D-glucose and \(\beta\)-D-galactose

 

At 298 K, the following reaction takes place for a cell at the hydrogen electrode: \[ H^+(aq) + e^- \longrightarrow \frac{1}{2} H_2 (1 \text{ bar}) \] The solution pH is 10.0. What is the hydrogen electrode potential in volts? (\(\frac{2.303RT}{F} = 0.06\) V)
The orbital with number of total nodes as 3 and angular nodes as 3 is
In which of the following, elements are correctly arranged in the decreasing order of atomic radius?
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
At T(K), the following equation is obtained for a first order reaction.
\[ \log \frac{k}{A} = -\frac{x}{T} \] The activation energy for this reaction is equal to (R = gas constant)
An ideal gas mixture of C\(_2\)H\(_6\) and C\(_2\)H\(_4\) occupies a volume of 28 L at 1 atm and 273 K. This mixture reacts completely with 128 g of O\(_2\) to produce CO\(_2\) and H\(_2\)O(\(l\)). What is the mole fraction of C\(_2\)H\(_4\) in the mixture ?
Which of the following is not an example of a synthetic detergent?

The correct statement regarding X and Y formed in the following reaction is: 

\[ (\mathrm{CH}_3)_3\mathrm{COC}_2\mathrm{H}_5 \xrightarrow{\text{HI},\ \Delta} \text{Halide (X) + Alcohol (Y)} \]

Observe the following molecules/ions. NH$_4^+$, NH$_3$, BF$_3$, OH$^-$, CH$_3^-$, H$^+$, CO, C$_2$H$_4$. The number of Lewis bases in the above list is