List of top Questions asked in AP EAPCET

At T K, vapour pressures of H\(_2\)O and CH\(_3\)OH are 36 and 120 torr respectively. 72 g of H\(_2\)O and x g of CH\(_3\)OH when mixed, the resulting solution has a total vapour pressure of 64 torr. Find x.
Assertion (A): AlCl\(_3\) becomes stable by forming a dimer.
Reason (R): The metal ‘Al’ cannot accept electrons from bridging chlorine atom of the bridged molecule.
In the structure of A\(_x\)B\(_y\), cations (A) occupy all the tetrahedral voids while anions (B) form fcc lattice. What is the ratio of x and y?
In which of the following crystal lattices are the angles \( \alpha \neq \beta \neq \gamma \neq 90^\circ \)?
The IUPAC name of the following compound is:

The total number of bromine atoms in the final product ‘X’ of the following reactions is:

Identify the element that can exhibit negative oxidation states.
At 25°C \(pK_a\) of CH\(_3\)COOH is 4.76 and \(pK_b\) of NH\(_4\)OH is 4.75. The pH of 1 M CH\(_3\)COONH\(_4\) is found to be 7.005. What will be the pH of 2 M CH\(_3\)COONH\(_4\) solution at the same temperature?
Assertion (A): H\(_2\)SO\(_4\) acts as a base in the presence of perchloric acid.
Reason (R): Ortho phosphoric acid is a weaker acid than H\(_2\)SO\(_4\). (Assume equal concentration in all cases)
Identify the carbonate which is thermally very stable.
Which pair of the following elements do not give flame test?
Identify the electron rich hydrides from the following:

The plot of \(V(L)\) vs \(t(^\circ C)\) is shown for an ideal gas. If molecular weight of the gas is 16, how many grams of the gas is used in the experiment? (P = 1 atm)

C\(_p\) of a gas is 30 J mol\(^{-1}\) K\(^{-1}\). If the gas is heated from 298 K to 348 K at 1 atm, the change in internal energy of 1 mole of gas at constant volume is approximately (R = 8.3 J K\(^{-1}\) mol\(^{-1}\))
Match the following:

At STP, 1.54 g of MnO\(_2\) reacted with excess HCl. What is the volume of Cl\(_2\) produced at STP? (At. wt: Mn = 55 u, O = 16 u)
Which of the following is not an extensive property?
Identify the pair of molecules/ions in which hybridisation of central atom is same, while their geometries are different.
The maximum number of spectral lines formed when an excited electron of a hydrogen atom in \( n = 5 \) drops to lower states is:
This is called as Baker's Yeast:
Which pair of elements have same electronegativity values in Pauling scale?
Match the following:

In which of the following conversions decrease in bond order is observed?
(I) \( O_2 \rightarrow O_2^- \)
(II) \( O_2 \rightarrow O_2^{2-} \)
(III) \( C_2 \rightarrow C_2^{2-} \)
(IV) \( N_2 \rightarrow N_2^+ \)
The radius of third orbit of He\(^+\) is \( Y \, \text{Å} \). The radius of second orbit of Li\(^{2+}\) (in Å) is:
'Flavr Savr' variety of transgenic plant is suitable for storage and transport is a: