List of top Chemistry Questions asked in AP EAPCET

How many grams of \(Mg\) is required to completely reduce \(100\;ml,\;0.1\;M\;NO_3^-\) solution using the following reaction?
\[ NO_3^- + Mg \longrightarrow Mg^{2+} + NH_3 \]

In which of the following, elements are arranged in the correct order of their electron gain enthalpies?

In second period of the long form of the periodic table an element \(X\) has second lowest first ionization enthalpy and element \(Y\) has second highest first ionization enthalpy values. What are \(X\) and \(Y\)?

Which quantum number provides information about the shape of an orbital?

The maximum number of electrons present in an orbital with \(n=4,\; l=3\) is

A hydrogen atom is excited to level \(n\) where its potential energy is found to be \(-1.088\, \text{eV}\). The magnitude of \(n\) is:

Radiations of two photons having energy three and nine times the work function of a metal are incident on the metal surface successively. The ratio of maximum velocities of photoelectrons emitted in two cases are:

Principles of molecular interactions and thermal energy can be used to explain: \[ (I)\ \text{Vapour Pressure} \quad (II)\ \text{Surface Tension} \quad (III)\ \text{Viscosity} \]

Identify the major product from the following reaction sequence:

Identify the product P

to give product P

The major product (Y) formed in the following reaction sequence is:

Identify P and R in the following reaction sequence:

Hexanedioic acid is used in the synthesis of which of the following?

For the given reaction which halogen requires addition of oxidizing agent to get better yield?

According to crystal field theory, when ligands approach the metal atom or ion in an octahedral field, the orbitals that undergo increase in energy are:

The true statements pertaining to H\(_2\)SO\(_4\) among the following are:
I. High volatility
II. Acts as reducing agent
III. Strong acidic character
IV. Strong affinity for water

The unstable halide of the following is

Assertion (A): Ammonia cannot exhibit hydrogen bonding in solid and liquid states.
Reason (R): Ammonia has higher melting and boiling points than predicted.

If \(E^\circ_{MnO_4^-/MnO_2} = x \, V\) and \(E^\circ_{MnO_2/Mn^{2+}} = y \, V\), what is the value of \(E^\circ_{MnO_4^-/Mn^{2+}}\)?

Which of the following statement is not correct for azeotropes?

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.

Which of the following methods are used for the coagulation of lyophobic colloidal solutions?
I. Cooling
II. Electrophoresis
III. Mixing two oppositely charged sols
IV. Dialysis for short duration

Which one of the following statements is correct about chemisorptions?

The correct relation to find out the half-life of a first order reaction is
(k = rate constant of reaction, [A]\(_0\) = initial concentration of reactant)

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.